WO2005047182A1 - 高シリカ型cds−1ゼオライト - Google Patents
高シリカ型cds−1ゼオライト Download PDFInfo
- Publication number
- WO2005047182A1 WO2005047182A1 PCT/JP2004/017106 JP2004017106W WO2005047182A1 WO 2005047182 A1 WO2005047182 A1 WO 2005047182A1 JP 2004017106 W JP2004017106 W JP 2004017106W WO 2005047182 A1 WO2005047182 A1 WO 2005047182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zeolite
- cds
- producing
- pls
- layered compound
- Prior art date
Links
- 239000010457 zeolite Substances 0.000 title claims abstract description 240
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 237
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 223
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract description 85
- 239000000377 silicon dioxide Substances 0.000 title abstract description 41
- 101100220616 Caenorhabditis elegans chk-2 gene Proteins 0.000 title description 8
- 239000013078 crystal Substances 0.000 claims abstract description 114
- 238000000034 method Methods 0.000 claims abstract description 76
- 239000012528 membrane Substances 0.000 claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims abstract description 33
- 238000000634 powder X-ray diffraction Methods 0.000 claims abstract description 24
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 14
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 14
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 14
- 150000001768 cations Chemical class 0.000 claims abstract description 8
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 8
- 229910018557 Si O Inorganic materials 0.000 claims abstract description 7
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 4
- 229910052701 rubidium Inorganic materials 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 113
- 150000001875 compounds Chemical class 0.000 claims description 90
- 238000010438 heat treatment Methods 0.000 claims description 84
- 239000007789 gas Substances 0.000 claims description 55
- 238000006243 chemical reaction Methods 0.000 claims description 54
- 239000011148 porous material Substances 0.000 claims description 51
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 claims description 46
- 239000003054 catalyst Substances 0.000 claims description 42
- 230000015572 biosynthetic process Effects 0.000 claims description 34
- 238000003786 synthesis reaction Methods 0.000 claims description 34
- 238000002425 crystallisation Methods 0.000 claims description 30
- 230000008025 crystallization Effects 0.000 claims description 30
- 230000018044 dehydration Effects 0.000 claims description 29
- 238000006297 dehydration reaction Methods 0.000 claims description 29
- 238000006068 polycondensation reaction Methods 0.000 claims description 26
- 238000000926 separation method Methods 0.000 claims description 26
- 238000001179 sorption measurement Methods 0.000 claims description 26
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 25
- 239000003607 modifier Substances 0.000 claims description 22
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 21
- -1 tetraalkylammonium cation Chemical class 0.000 claims description 21
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
- 150000001412 amines Chemical class 0.000 claims description 16
- 125000004429 atom Chemical group 0.000 claims description 14
- 239000002243 precursor Substances 0.000 claims description 13
- 230000002194 synthesizing effect Effects 0.000 claims description 13
- 238000006237 Beckmann rearrangement reaction Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical class C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 claims description 10
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 4
- OSBSFAARYOCBHB-UHFFFAOYSA-N tetrapropylammonium Chemical class CCC[N+](CCC)(CCC)CCC OSBSFAARYOCBHB-UHFFFAOYSA-N 0.000 claims description 4
- 125000005210 alkyl ammonium group Chemical group 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 230000034655 secondary growth Effects 0.000 claims description 3
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical class CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 claims description 3
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 2
- 125000005207 tetraalkylammonium group Chemical group 0.000 claims description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims description 2
- 102100033118 Phosphatidate cytidylyltransferase 1 Human genes 0.000 claims 12
- 101710178747 Phosphatidate cytidylyltransferase 1 Proteins 0.000 claims 12
- 239000008186 active pharmaceutical agent Substances 0.000 claims 1
- GPTXWRGISTZRIO-UHFFFAOYSA-N chlorquinaldol Chemical compound ClC1=CC(Cl)=C(O)C2=NC(C)=CC=C21 GPTXWRGISTZRIO-UHFFFAOYSA-N 0.000 claims 1
- 230000002566 clonic effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 description 61
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 50
- 238000002441 X-ray diffraction Methods 0.000 description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- 239000000843 powder Substances 0.000 description 27
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 26
- 229910052863 mullite Inorganic materials 0.000 description 26
- 238000004458 analytical method Methods 0.000 description 22
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 22
- 229910052757 nitrogen Inorganic materials 0.000 description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 238000010304 firing Methods 0.000 description 16
- 239000002994 raw material Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 15
- 238000001144 powder X-ray diffraction data Methods 0.000 description 15
- 238000005004 MAS NMR spectroscopy Methods 0.000 description 11
- 239000012071 phase Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000001493 electron microscopy Methods 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000003513 alkali Substances 0.000 description 8
- 238000003795 desorption Methods 0.000 description 8
- 229910001873 dinitrogen Inorganic materials 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000012466 permeate Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000005481 NMR spectroscopy Methods 0.000 description 6
- 229910008051 Si-OH Inorganic materials 0.000 description 6
- 229910006358 Si—OH Inorganic materials 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 6
- 229920006362 Teflon® Polymers 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000010335 hydrothermal treatment Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- YPRQFESOPJGYLW-UHFFFAOYSA-N n-cyclohexylidenehydroxylamine;methanol Chemical compound OC.ON=C1CCCCC1 YPRQFESOPJGYLW-UHFFFAOYSA-N 0.000 description 6
- 238000010899 nucleation Methods 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000005342 ion exchange Methods 0.000 description 5
- 238000005373 pervaporation Methods 0.000 description 5
- 239000011973 solid acid Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 238000004587 chromatography analysis Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 239000011949 solid catalyst Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000000635 electron micrograph Methods 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- 125000001475 halogen functional group Chemical group 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000005297 pyrex Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004400 29Si cross polarisation magic angle spinning Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002483 Cu Ka Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000003991 Rietveld refinement Methods 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012527 feed solution Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 208000033962 Fontaine progeroid syndrome Diseases 0.000 description 1
- 229910013553 LiNO Inorganic materials 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 101000729959 Pithecopus hypochondrialis Phylloseptin-H9 Proteins 0.000 description 1
- 239000012494 Quartz wool Substances 0.000 description 1
- QFEHLLHZCIRVJG-UHFFFAOYSA-N S(=O)(=O)(O)O.C1(CCCCC1)=NO Chemical compound S(=O)(=O)(O)O.C1(CCCCC1)=NO QFEHLLHZCIRVJG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- OEERIBPGRSLGEK-UHFFFAOYSA-N carbon dioxide;methanol Chemical compound OC.O=C=O OEERIBPGRSLGEK-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006462 rearrangement reaction Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- 150000003624 transition metals Chemical group 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/028—Molecular sieves
- B01D71/0281—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0051—Inorganic membrane manufacture by controlled crystallisation, e,.g. hydrothermal growth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0083—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
- C01B37/02—Crystalline silica-polymorphs, e.g. silicalites dealuminated aluminosilicate zeolites
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/02—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D223/06—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D223/08—Oxygen atoms
- C07D223/10—Oxygen atoms attached in position 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/08—Specific temperatures applied
- B01D2323/081—Heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/0283—Pore size
- B01D2325/02834—Pore size more than 0.1 and up to 1 µm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/22—Thermal or heat-resistance properties
Definitions
- the present invention relates to a novel solid that can be used as a metal-supporting solid, a precursor material for the synthesis of a novel zeolite, a separation sorbent, a shape-selective solid catalyst, an ion exchange agent, a chromatography packing, and the like.
- Novel crystalline high-silica zeolites that can be used for crystalline layered compounds, separation / adsorbents, shape-selective solid catalysts, ion-exchange agents, chromatography packings, chemical reaction fields, etc., and methods for their production It is about.
- Zeolites have micropores (3-10 A) that are regularly arranged at the atomic level, and aluminosilicates whose constituent elements of the skeletal structure are Si, Al, and strong are either shape-selective or It has the function of molecular sieve (molecular sieve), separation adsorbent, ion exchanger, and petroleum-related catalyst due to its chemical and physical adsorption due to its skeletal structure.
- molecular sieve molecular sieve
- separation adsorbent separation adsorbent
- ion exchanger separation adsorbent
- petroleum-related catalyst due to its chemical and physical adsorption due to its skeletal structure.
- About 150 different structures are known as natural and synthetic zeolites, and by combining them with the composition of skeletal elements, they can be used as porous materials that have the desired chemical properties, structural stability, and heat resistance. It is used in a wide range of industrial fields, mainly petrochemicals. '
- Each zeolite is distinguished by a crystal structure having a regular pore structure, and gives a unique X-ray diffraction pattern.
- the crystal structure defines the shape and size of the pores and pores of the zeolite.
- the adsorption characteristics and catalytic performance of each molecular sieve are determined in part by the shape and size of its pores and pores.
- the usefulness of a particular zeolite depends at least in part on its crystal structure.
- Zeolites having a high silica composition are superior to low silica compositions in two senses, having high heat resistance and high hydrophobicity, and have sufficient mechanical strength. . These properties are important when zeolite is used as a catalyst for organic reactions.
- zeolite synthesis research Although only a product with a low silica-to-alumina ratio was obtained at the stage of, a zeolite having a composition with a much higher silica / alumina ratio was added by adding an organic crystallization modifier to the starting gel, which is a silica source. Synthesis has become possible (Non-Patent Document 1).
- MFI-type zeolite, silicalite has bulky hydrophobicity and is used as a separating adsorbent.
- the catalytic performance and adsorption characteristics of zeolite depend on the size and shape of pores and pores, that is, its crystal structure.
- the types of zeolites that can be used industrially are limited, and the synthesis of zeolites with a new crystal structure is desired to further expand the applications.
- the synthesis of high-silica zeolites with a novel structure and excellent heat resistance is attracting attention in recent years and is considered to be extremely useful as a high-performance catalyst such as the gas-phase Beckmann transition (Patent Documents 1 and 2). Et al.
- these zeolites are produced by a hydrothermal synthesis method, that is, a method of forming a large amount of water and an organic crystallization modifier such as an aluminum source, a silica source, an alkali metal, and amines (forming pores of the generated zeolite).
- a hydrothermal synthesis method that is, a method of forming a large amount of water and an organic crystallization modifier such as an aluminum source, a silica source, an alkali metal, and amines (forming pores of the generated zeolite).
- an organic crystallization modifier such as an aluminum source, a silica source, an alkali metal, and amines (forming pores of the generated zeolite).
- Molding agent is prepared to have a desired chemical composition, sealed in a pressure vessel such as an autoclave, and heated to produce under self-pressure.
- this zeolite is formed into a film on a ceramic-metal porous substrate support.
- Zeolite membranes which utilize the molecular sieve, action, and affinity (hydrophobic or hydrophilic) of zeolite, have come to be used as alcohol and water separation or gas separation membranes by pervaporation. Under such circumstances, zeolite membranes using various porous supports and methods for producing the same have been proposed.
- examples of the practical use as an alcohol separation method instead of the distillation method include, for example, utilizing the hydrophilicity of A-type zeolite having an oxygen 8-membered ring structure.
- There is a method for concentrating alcohol by selectively permeating water from an aqueous alcohol solution Patent Document 3
- the A-type zeolite has poorer acid resistance than other high-silica-type zeolites (its structure is destroyed by contact with acid). There was a problem that it was difficult to use for separation.
- Zeolites having a high silica composition are superior to films having a low silicic acid composition, such as A-type zeolite, in two senses: high heat resistance and high hydrophobicity. Therefore, from these viewpoints, various researches on development of a method for producing a high silica type zeolite membrane have been attempted.
- zeolite Since zeolite is poor in plasticity, when it is formed into a film, it is almost always a hydrothermal synthesis method, that is, a large amount of water and an organic crystallization control such as an aluminum source, a silica source, an alkali metal, and amines.
- the mixture is appropriately formulated to have the desired product zeolite composition, sealed in a pressure vessel such as an autoclave, and heated by coexisting a porous substrate tube such as alumina or mullite.
- a zeolite film is synthesized on these substrates, and a zeolite film without defects is synthesized by applying a zeolite seed crystal and then hydrothermally synthesizing it.
- Patent Literature 4 Manufacturing method of DDR type zeolite membrane
- the zeolite membrane synthesized by these techniques is used for separation 'concentration etc.' from gas or liquid mixture (for example, Patent Literature 5: Molar Denite-type zeolite membrane composite, method for producing the same, and concentration method using the same)
- Patent Literature 5 Molar Denite-type zeolite membrane composite, method for producing the same, and concentration method using the same
- these zeolite membranes are all zeolite membranes produced using existing zeolites, and are more excellent in the art. There was a strong demand for the development of zeolite membranes.
- ⁇ - caprolactam is one of the basic substances of the organic chemical industry as a main raw material for the production of 6-nylon.
- industrialized ⁇ - caprolactam is manufactured using cyclohexanone oxime sulfuric acid catalyst, and ⁇ -caprolactam by liquid phase reaction.
- Beckmann rearrangement reaction that causes rearrangement is mainly used.
- a method using a solid acid as a catalyst instead of sulfuric acid is being studied. These reactions take place in the gas phase
- Boric acid-based catalysts Patent Documents 6 and 7
- silica'alumina-based catalysts Patent Document 8
- solid phosphoric acid catalysts Patent Document 9
- double-ended metal oxide catalysts Non-patent Documents 3
- a zeolite-based catalyst Non-Patent Document 4 and Patent Document 10.
- Recently, low solid acidic silica zeolite-based catalysts having low properties of solid acid have been studied (Patent Document 11, Patent Document 1'2, and Patent Document 13).
- Patent Document 1 JP-A-2000-256308
- Patent Document 2 JP-A-2000-256309
- Patent Document 3 Japanese Patent Application Laid-Open No. 7-185275 ′
- Patent Document 4 Japanese Patent Application Laid-Open No. 2003-159518
- Patent Document 5 Japanese Patent Application Laid-Open No. 2003-144871
- Patent Document 6 JP-A-53-37686
- Patent Document 8 British Patent No.881927
- Patent Document 9 UK Patent No.881926
- Patent Document 10 JP-A-57-139062
- Patent Document 11 JP-A-62-126167
- Patent Document 12 JP-A-63-54358
- Patent Document 13 JP-A-62-281856
- Non-Patent Document 1 R.M.Barrer 1982, Hydrothermal Chemistry of Zeolites,
- Non-patent Document 2 R.M.Barrer and P.J.Denny, J. Chem. Soc., 1961, 971-982
- Non-patent document 3 The Chemical Society of Japan, 'No. 1, 77 (1977)
- Non-Patent Document 4 Journal 'of Catalysis, 6, 247 (1966)
- the conventional hydrothermal synthesis method is a case of one-step synthesis. Therefore, in order to synthesize a zeolite having a novel crystal structure, various synthesis conditions must be carefully studied and investigated. In particular, it is considered difficult to arbitrarily create a skeletal structure.
- the first embodiment of the present invention is a novel crystalline layered compound and a compound formed using the same as a part. It is an object of the present invention to provide a high silica-containing zeolite having a novel crystal structure and a method for producing the same.
- a second aspect of the present invention is to provide a method for easily synthesizing a CDS-1 zeolite membrane, which is a completely new zeolite that is not a conventional zeolite, in synthesizing a high silica zeolite membrane.
- the purpose is.
- Another object of the present invention is to provide a method for synthesizing a dense CDS-1 film.
- Another object of the present invention is to provide a novel zeolite membrane having high hydrophobicity and excellent heat resistance.
- the present invention not only enables a zeolite membrane that can be employed in an industrial liquid and gas separation process to be simply and quickly manufactured, but also, for example, a separation method in the petrochemical industry. It is an object of the present invention to provide a zeolite membrane suitable as a membrane reactor having a catalytic action. '
- a third aspect of the present invention aims to provide a method for producing ⁇ -force prolatatam from cyclohexanoxime by Beckmann rearrangement reaction using CDS-1 as a catalyst. Also, the present invention provides a method for industrially producing ⁇ -force prolatatam using CDS-1, which is a new high silicate zeolite catalyst exhibiting high performance in Beckmann rearrangement. The purpose is to provide.
- the present inventors focused on the similarity between the basic structure of a crystalline layered compound and many zeolite structures, and developed a novel powder X-ray and X-ray diffraction by a topological phase transition method using dehydration polycondensation.
- the present invention has been completed by finding that a zeolite having a crystal structure geometrically similar to the layered compound shown in FIGS. 2 and 3 showing a pattern can be synthesized.
- This new layered compound is called PLS-1 (Pentagonal-cylinder Layered Silicate),
- the present invention has the following technical means.
- the chemical composition is [(Si ⁇ 0) ⁇ ⁇ ⁇ ( ⁇ ) ⁇ ( ⁇ )]
- TMA is a tetraalkylammonium cation
- M is an alkali gold such as Na, K, Li, etc.
- y 0.5 ⁇ y ⁇ l. 5 z «6 ⁇ z ⁇ 8, w» 0. 02 ⁇ w ⁇ l. 5 Represent.
- a crystalline layered compound, characterized in that the lattice spacing of d in the pattern is at least one shown in Table 7 below.
- d lattice spacing.
- w weak relative intensity
- m medium phase pair intensity
- s strong relative intensity
- vs very strong relative intensity.
- M represents an alkali metal cation such as Na, K, Li, etc.
- X represents 0 x ⁇ l.2, y about 0.5 ⁇ y ⁇ l. 5, z represents 6 ⁇ z ⁇ 8, w Represents the range of 0 ⁇ 02 ⁇ w ⁇ l.5.
- a method for producing a crystalline layered compound comprising synthesizing a crystalline layered compound represented by the formula (1). (7) The method for producing a crystalline layered compound according to claim 6, wherein the crystalline layered compound according to any one of (1) to (5) is synthesized. , '
- the chemical composition is [(Si ⁇ ⁇ 0) ⁇ ⁇ ] (where ⁇ is an alkali gold such as Li, Na, K, or Rb.
- T represents Al, Ga, Fe, Ce atom as skeleton substituting element, x is 0 ⁇ ⁇ 3.0, y is 0 y ⁇ l.0, z is 0 ⁇ z ⁇ 3.0 Represents a range. ), Characterized by having a microporous structure consisting of covalent bonds between Si and O atoms.
- Al, Ga, Fe, and Ce atoms are represented as case-replacement elements, x is in the range 0 ⁇ x ⁇ 3.0 y ⁇ 0 ⁇ y ⁇ l.0, and z is in the range 0 ⁇ z ⁇ 3.0.
- a method for producing zeolite comprising synthesizing the zeolite represented by the formula (1). '
- a catalyst or a separation / adsorption member comprising the zeolite according to any one of (9) to (14).
- the layered compound shown in FIGS. 2 and 3 has a repeating structure of Si—O tetrahedral coordination in a silicate basic structure, and is formed by a silicon 5-membered ring. Pores are contained in the silicate. A layer of cations with an ionic radius of 1.0 angstrom or more and an organic crystallization modifier such as organic amines with a diameter of 3.0 angstrom or more intervenes between the silicate layers to form the whole.
- the crystalline layered compound which is a raw material of the method of the present invention includes a silica source, an alkali source having an ionic radius of 1.0 angstrom or more, an organic crystallization regulator such as an amine having a diameter of 3.0 angstrom or more, and a solvent.
- a silica source preferably, for example, the force at which SiO is used is not limited thereto.
- any conventionally known organic crystallization regulator can be used as long as it can access the inside of the interlayer, can expand the interlayer, and has a function as a ⁇ type forming a silicate skeleton structure.
- quaternary alkylammonium salts such as tetramethylammonium salt, tetraethylammonium salt, tetrapropylammonium salt, tetrabutylammonium salt and amines, amines, phosphonium ions (R4P +: R is hydrogen, An alkyl group or an aryl group having 10 or less carbon atoms).
- the organic crystallization modifier preferably used in the present invention is a tetramethylammonium salt.
- reaction components and the reaction molar ratio in this production method may be appropriately determined depending on the composition of the crystalline layered compound represented by the above-mentioned general formula to be aimed.
- the reaction process of the crystalline layered compound from the sol-gel mixed solution formed by mixing the raw materials If the process is heat-treated in the presence of a large amount of water, add a reaction vessel such as an autoclave.
- the heating temperature is not particularly limited, but is preferably 100 to 200 ° (more preferably 140 to 170 ° (the reaction time is preferably 3 hours to 30 days, more preferably 3 days to 14 days.)
- the resulting powder is washed with acetone and water and dried.
- the crystalline layered compound PLS-1 has a crystal structure that shows characteristic diffraction peaks shown in Table 10 below in powder X-ray diffraction.
- CDS-1 zeolite will be generally described.
- the repeating unit of tetrahedral coordination of Si-O has a basic structure of silicate, and pores composed of silicon 5-membered ring and 8-membered ring are formed. This is a zeolite containing high silica and having a crystal structure composed entirely of an atomic arrangement as shown in FIG.
- CDS-1 zeolite has a crystal structure that exhibits characteristic diffraction peaks shown in Table 11 below in powder X-ray diffraction.
- CDS-1 zeolite has a structure in which cylindrical pores of different sizes are alternately stacked on a sheet as shown in Fig. 1, and the crystal structure is distorted due to misalignment of the sheet skeleton. Cheap. In some cases, in addition to the above-mentioned diffraction pattern, it has a crystal structure showing characteristic diffraction peaks shown in Table 12 below.
- the skeletal topology is basically the same as that of CDS-1 zeolite shown in Table 11 by measurement of Si-MAS NMR and nitrogen adsorption described later. Therefore, although the average structure may be slightly distorted and changed to a crystal structure with low symmetry, the geometric relationship of the skeleton satisfies Figure 1.
- CDS-1 zeolite is obtained by heating PLS-1 under a vacuum and heating it under a flow of a supporting gas, and the optimum heating conditions are different.
- the synthesis method under vacuum will be described. Only the PLS-1 powder crystal obtained as described above is placed in a Pyrex (registered trademark) or quartz glass tube, connected to a vacuum line equipped with a nitrogen trap, and subjected to heat treatment in vacuum to perform dehydration polycondensation. This gives CDS-1 zeolite.
- the ultimate vacuum is not particularly limited, preferably in the range of 1 X 10 one 3 ⁇ 1 X 10 _8 torr
- the heating temperature is also not particularly limited, but is preferably 400 to 800 ° C.
- the degree of vacuum decreases, but the degree of vacuum that completely transforms into zeolite increases again.
- the assault that requires removal of the residue may be performed, for example, by putting lOOOOmg of the crystal of CDS-1 zeolite in an aluminum petri dish and using a matsufuru furnace under an airflow of lOOOOmlZmin from room temperature by 1.4 °. Heat up to 650 ° C with CZmin and hold at 650 ° C for 4 hours.
- the final product is a white powder. From the powder XRD measurement of the zeolite of this example, the diffraction peak is almost the same as that specific to CDS-1 zeolite shown in Table 11. '
- FIG. 8 shows the result of analyzing the pore size distribution by the density half-function method from the argon gas adsorption isotherm of the zeolite.
- the zeolite of this example has a high gas adsorption performance and a pore size distribution of 0.48 nm or more, indicating that the zeolite has micropores at the same level as the pore size of known zeolite.
- the total pore volume is 0.6 mlZg.
- FIG. 4 shows the 29 Si-MAS NMR spectrum.
- Bae Kutonore be peak Nomigami attributed to Q 4.
- Q 4 signal is observed. This indicates that the local structure is due to the pore structure peculiar to zeolite.
- CDS-1 can also be obtained by optimizing the conditions in the flow of a supporting gas, and only the same PLS-1 powder crystal as above is placed in a Pyrex (registered trademark) or quartz tube, and the fuel is supported. By performing dehydration polycondensation by heating while flowing a neutral gas, CD'S-1 can be obtained.
- the flow rate of the gas is not strictly specified, but it is preferably 10 mL or more per minute for 50 mg of PLS-1. More preferably, a flow rate of about 10-100 mL / min for 50 mg of PLS-1 is desirable. '
- combustion gas refers to a gas containing oxygen, and refers to a gas containing oxygen molecules such as pure oxygen and air.
- dry air was used as the supporting gas. As with normal zeolite synthesis, it is necessary for effective combustion of the residual organic template.
- the present inventors have developed a silicon 5-membered ring and 8-membered ring structure from a layered silicate (PLS) having a crystal structure containing a silicon 5-membered ring by utilizing its geometrical similarity. It has been found that a zeolite having a contained crystal structure can be synthesized. Specifically, it was converted into a new zeolite by condensing the Si— ⁇ group present in PLS under conditions such as vacuum, air, medium, and oxygen atmosphere. This zeolite CDS-1 has a chemical composition of [(Si ⁇ 0) ⁇
- ⁇ represents an alkali metal cation such as Na, K, Li, etc., x3 ⁇ 40 ⁇ x ⁇ 3.0, y is y
- the lattice spacing d (A) in the X-ray diffraction pattern is at least described in Table 4 or Table 5.
- Table 4 or Table 5 the lattice spacing d (A) in the X-ray diffraction pattern.
- the description of the numerical range includes not only the extreme values but also any intermediate values included therein, and is based on ordinary knowledge without departing from the gist of the present invention. Therefore, it is possible to appropriately change the design, make improvements, and the like.
- a porous support made of a metal or alloy represented by alumina, mullite, zirconia, stainless steel or aluminum, a metal oxide or the like, a porous anodic acid membrane A support and the like are exemplified.
- the porous support having an average pore diameter of 0.1 to 10 microns is used.
- Examples of the method of surface treatment of these supports include water washing and ultrasonic washing.
- a method of washing the surface of the support by ultrasonic washing of 1 to LO for water is used. Is used.
- PLS is formed on the above-mentioned porous support by a hydrothermal synthesis method.
- the PLS has a structure in which a tetrahedral coordination unit of SiO is included in a silicate basic structure, and a fine height due to a five-membered silicon ring is included in the silicate.
- a silica source an alkali source having an ion radius of 1.
- an organic crystallization controlling agent such as an amine having a diameter of 3.0 ⁇ or more
- a layered silicate containing an organic crystallization controlling agent synthesized from a solvent It is.
- a seed crystal of PLS synthesized in advance is rubbed into a porous support and then hydrothermally synthesized again to grow the seed crystal to form a strong continuous crystal. Even with membrane good.
- an appropriate container for example, a pressure-resistant container is used.
- Methods for placing the porous support in the pressure-resistant container include, for example, the bottom of the container, the middle part of the container, the upper part of the container, the container and the plane, the container and the vertical, the container with a certain angle, etc.
- the PLS crystallization rate can be reduced by adding 0.1 to 30 wt%, preferably 3 to 10 wt% of the PLS seed crystal in the starting material during hydrothermal synthesis.
- a crystalline layered compound PLS is formed as a precursor compound on the above-mentioned porous support, and first, a PLS film is obtained. Thereafter, the obtained PLS membrane is air-dried at a speed of 300 to 800 ° C, preferably 400 to 600 ° C, 0.1 to 30 ° C / min, preferably 0.5 to 0.5 ° C / min. By firing, it can be converted to CDS-1 film.
- this firing step is to condense the Si—OH groups of the PLS, and firing in a vacuum, for example, placing the PLS film in a glass tube of any size, using a nitrogen trap and a turbo molecular pump Alternatively, a glass tube may be connected to a general-purpose vacuum line, and heat treatment may be performed in vacuum to convert to a CDS-1 film.
- the ultimate vacuum is particularly, without limitation, preferably 1 X lp_ 3 ⁇ :.. In 1 X 10- 8 torr range, the heating temperature is preferably 400 to 800 ° C.
- CDS-1 is characterized in that the lattice spacing d (A) in the X-ray diffraction pattern is at least as shown in Table 4 or Table 5.
- a seed crystal of CDS-1 synthesized in advance is applied to a porous support and then subjected to secondary growth to form a film.
- PLS is synthesized, and then the Si— ⁇ group contained in PLS is condensed.
- CDS-1 Next, after the CDS-1 seed crystal is applied to the porous support, the seed crystal is secondarily grown in an alkaline aqueous solution containing silicon or the like to form a CDS-1 film.
- the resulting CSD-1 membrane for example, has an A1-SiO 8-membered ring structure (4.5 X 3.3A) that not only shows catalytic activity in the gas phase Beckmann transfer reaction,
- CDS-1 determined the properties of the water permselective membrane because the remaining Si-OH in the condensation from PLS was present in the membrane. .
- the present invention relates to a method for producing a crystalline layered silicate compound by dehydration polycondensation, wherein the chemical composition is [(Si T ⁇ ⁇ ) ⁇ ⁇ ] (wherein ⁇ is an alkali such as Li, Na, K, and Rb) Metal yang
- Ions and T represent Al, Ga, Fe, and Ce as skeletal replacement elements, 3 ⁇ 40 ⁇ x ⁇ 3.0, y represents the range of 0 ⁇ y ⁇ l.0, and z represents the range of 0z ⁇ 3.0. ), Having a microporous structure composed of covalent Si— ⁇ bonds, and having a geometric crystal structure (atom arrangement) including 5- and 8-membered silicon rings. It is characterized by using zeolite (CDS-1) as a catalyst to produce ⁇ -force prolactam by cyclohexane oxime force Beckmann rearrangement reaction.
- CDS-1 zeolite
- CDS-1 has a tetrahedral coordination repeating unit of S'i-O in a silicate basic structure, This is a zeolite containing high silica, characterized in that pores composed of 5- and 8-membered rings of silicon have a crystal structure (atomic arrangement) that constitutes the whole by a geometric arrangement.
- any method can be used, and the production method thereof is not particularly limited.
- CDS-1 zeolite used in the present invention has a crystal structure that shows characteristic diffraction peaks shown in Table 13 below in powder X-ray diffraction.
- the CDS-1 zeolite of the present invention has a structure in which cylindrical pores having different sizes are alternately stacked on a sheet. Has a crystal structure exhibiting characteristic diffraction peaks shown in Table 14 below, in addition to the above diffraction patterns.
- the pore structure is basically the same as that of CDS-1 zeolite according to the measurement results of 29 Si-MAS NMR and nitrogen adsorption described later. Therefore, the average structure of CDS-11 zeolite may change to a crystal structure with low symmetry due to a slight distortion of the orthorhombic crystal structure. 1 is satisfied.
- CDS-1 zeolite preferably, for example, the same compound as the crystalline layered compound PLS_1 (Japanese Patent Application No. 2002-331333) can be used as the precursor compound.
- PLS-l Patent Layered Silicate
- This crystalline layered compound has a basic structure of silicate with tetrahedral coordination units of Si-O, It has a structure in which holes are contained in the silicate.
- the PLS-1 is, for example, a silica source, an alkali source having an ionic radius of 1.0 angstrom or more, an organic crystallization modifier such as amine having a diameter of 3.0 angstrom or more, and an organic crystallization modifier from a solvent. It is synthesized as a containing layered silicate.
- the crystallization modifier is preferably, for example, quaternary amine (tetramethylammonium hydroxide). Is used.
- M is an alkali metal cation such as Na, K, Li, etc.
- X is 0 ⁇ 1.2
- y is 0.5 ⁇ y ⁇ ⁇ 1.5
- z is 6 ⁇ z8
- w is 0.0 represents the range of 02 ⁇ w ⁇ l.5.
- the obtained PLS-1 is placed, for example, in a glass tube of an arbitrary size, connected to a general-purpose vacuum line equipped with a nitrogen trap and a tap molecular pump, and heated in a vacuum. Processing gives CDS-1 zeolite.
- the ultimate vacuum is preferably in the range of 1 X 10 ⁇ 3 ⁇ 1 X 10- 8 torr, heating temperature is preferably 300 to 800 ° C, more preferably 4 00 to 800 ° C Force S, but not limited to these.
- the compound obtained by the above heat treatment is reduced by about 20% with respect to the initial weight.
- the final product is a white powder, and when analyzed by powder XDR, the diffraction peaks are identical to those shown in Table 2 and have the characteristic diffraction peak of CDS-1 zeolite. You.
- This zeolite has high gas absorption performance. Further, this zeolite has a characteristic of adsorption on the outer surface since there is a history of adsorption and desorption of nitrogen gas.
- FIG. 9 shows the effective pore diameters of the two kinds of Keitan 8-membered rings contained in the Si—O skeleton structure, which are calculated based on the crystal structure model. Here, the radius of the oxygen atom was 1.35 A according to the literature (Ch.
- the average diameter is 0.48 ⁇ m, and the pores have the same level as the pore diameter of the known zeolite.
- the novel high-silica zeolite catalyst CDS-1 used in the present invention causes dehydration condensation of silanol groups between layers by heating the pentasil-type cylindrical connecting layered compound PLS under reduced pressure. It is synthesized by making it into a cyclic zeolite, and has the advantages that the production process is simple and uniform zeolite is easily obtained. Furthermore, the quaternary amine TMAOH (tetramethylammonium hydroxylate) used for PLS synthesis for crystallization adjustment is also compared with the expensive TPAOH (tetrapropylammonium hydroxylate) used for MFI silicalite and silicalite. Another advantage is that the retail price is as low as about 1 da2 to 1 da3. Another major advantage is that since most of the TMAOH used in the synthesis of CDS-1 is recovered from PLS, TMAOH can be used repeatedly. Furthermore, there is an advantage that it is not necessary to perform the operation of firing to remove TMAOH.
- the crystalline layered silicate compound is dehydrated and polycondensed at atmospheric pressure.
- the heating temperature is 300 to 800 ° C, and the heating temperature is 0 :! to 10 ° C per minute.
- the CDS-1 is preferably obtained, for example, by treating a precursor thereof with a Group 6 transition metal oxide (.Cr, Mo, W, etc.), or CDS-1.
- CDS-1 has micropores with an average pore diameter of 0.48 nm or more and a volume of 0.6 cc / g or more, and further, a cation exchanger or hydrogen ion exchange Ion exchange is performed using CDS-1 as a body, for example, ammonium nitrate, and the force S used for proton-substituted CDS-1 is not limited thereto.
- the reaction temperature is 150 to 500 ° C
- the WHSV of cyclohexanone oxime is 0.001 lh to 1 to 20. Ohm. — One.
- the present invention is characterized in that a novel crystalline CDS-1 zeolite catalyst is used in a so-called Beckmann rearrangement reaction in which cyclohexanone oxime is rearranged in the gas phase to ⁇ -monoprolatatam.
- the configuration other than the above is not particularly limited, and the usual anti-jfe method, anti-condition, reaction apparatus, etc. Can be used. According to the present invention, for example, using methanol as a diluting solvent,
- the zeolite of the present invention has a novel crystal structure and has micropores with an average silica content of 0.48 nm or more at low cost and high silica content. It can be applied to shape-selective solid catalysts, ion exchange agents, chromatography packing materials, chemical reaction sites, and the like. According to the method for producing zeolite of the present invention, CDS-1 zeolite having a novel crystal structure can be easily formed. In addition, this production method is a method of obtaining a higher-dimensional structure by directly dehydrating and polycondensing the skeletal structure of the layered compound serving as a precursor. It provides new guidelines for design.
- a CDS-1 zeolite membrane which is a completely new zeolite that can provide a high-silica type zeolite membrane and is different from existing zeolite, is simply synthesized.
- Industrial liquid and gas separation processes, etc. For example, in the petrochemical industry, a zeolite membrane suitable for a membrane reactor having separation and catalysis can be used. Can be provided, and a ray effect is achieved.
- the third aspect of the present invention it is possible to provide (1) a method for producing ⁇ -force prolatatam using a novel crystalline CDS-1 zeolite catalyst, and (2) a new method showing high performance in Beckmann rearrangement.
- Efficiency ⁇ -prolactam can be synthesized with high efficiency using a standard silica-based zeolite catalyst.
- Use of a large amount of fuming sulfuric acid and treatment of a large amount of by-product ammonium sulfate as in the conventional method (4)
- a new synthesis process using CDS-1 which is a simple and low-cost synthesis of zeolite-based catalysts, can be used to establish a new rearrangement reaction without problems such as The effect is that it can be provided.
- the powder X-ray diffraction (XRD) pattern was obtained by using Mac Science's M21X and MXP3TA-HR, Cu Ka line and Cu Ka line, and step scanning at 0.02 ° intervals.
- the crystal structure analysis was performed using the indexing program TREOR90, Rietveld analysis program RIETAN-2000, direct method program EXPO (SirWare), and Accelrys Co., Ltd. Cerius2. Furthermore, the Mac Science Co. TG-DTA200 0 to thermogravimetric analysis, the 29 Si_MAS NMR using Bruker BioSpin Corporation AMX- 500. Argon adsorption isotherms were measured at 81.4 K (liquid argon) with tantasorbne-tAutosorb-IMP. The nitrogen adsorption isotherm was measured at 77 K (liquid nitrogen) according to hASAP2010 by Shimadzu Corporation. The chemical composition of the product was determined by ICP analysis (SPS-1500R, manufactured by Seiko Instruments Inc.).
- TMAOH Tetramethylammonium hydroxide: Wako Pure Chemical Industries
- Wako Pure Chemical Industries 0.5N KOH (Wako Pure Chemical Industries) 5.
- FIG. 7 shows a nitrogen desorption / adsorption isotherm of PLS-11. It can be seen that PLS-1 has a small absorption capacity. Above is the desorption isotherm, and below is the adsorption isotherm.
- Figure 5 shows an electron micrograph image of PLS-1. It can be seen that it is a thin scale-like crystal form of l to 2 nim and has a cleavage plane peculiar to the layered structure.
- Example 3 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 160 ° C. for 5 days. Also in this example, PLS-1 was obtained as a product.
- Example 3 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 160 ° C. for 5 days. Also in this example, PLS-1 was obtained as a product.
- Example 4 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 160 ° C. for 10 days. Also in this example, PLS-1 was obtained as a product.
- Example 4 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 160 ° C. for 10 days. Also in this example, PLS-1 was obtained as a product.
- Example 1 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 170 ° C. for 5 days. Also in this example, PLS-1 was obtained as a product.
- Example 5 PLS-1 was synthesized under the same conditions except that heat treatment was performed at 170 ° C. for 5 days. Also in this example, PLS-1 was obtained as a product.
- PLS-1 was synthesized under the same conditions except that heat treatment was performed at 170 ° C for 10 days to synthesize PLS-1.
- heat treatment was performed at 170 ° C for 10 days to synthesize PLS-1.
- a single phase of PLS-1 was not produced, and some PLS-1 and amorphous silica were produced. This is considered to be due to the fact that the heat treatment progressed too much and changed to a dense amorphous phase, and a single phase of PLS-1 was not generated.
- the PLS- 1 put 3. Og Pyrex or quartz glass tube having an inner diameter of 25 mm, connected to a vacuum line, under vacuum of 5 X 10- 6 torr, or 4 hours from room temperature to 500 ° C
- the mixture was subjected to a heat treatment consisting of three steps of heating, holding for 4 hours, and cooling to room temperature over 1 hour.
- CDS-1 zeolite as a gray powder was obtained as a product.
- the weight at this time was 2.55 g. From the powder XRD pattern of this product, the characteristic diffraction peaks of CDS-1 shown in Table 16 were observed.
- FIG. 11 shows a scanning electron micrograph image of CDS-1 zeolite. One side is!
- Example 1 CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 575 ° C. Also in this example, CDS — 1. was obtained as a product (FIG. 12).
- Example 1 CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 650 ° C. Also in this example, CDS-1 was obtained as a product (FIG. 12).
- Example 1 CDS-1 was synthesized under the same conditions except that the heat treatment was performed at a set temperature of 725 ° C. Also in this example, CDS-1 was obtained as a product. ( Figure 12).
- Example 1 CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 800 ° C. Also in this example, CDS-1 was obtained as a product (FIG. 12).
- Example 1 CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 425 ° C.
- heat treatment was performed at a set temperature of 425 ° C.
- the force at which a peak characteristic of C′DS-1 was observed As shown in FIG. 12, some other diffraction peaks were also observed, and this was an intermediate in the structural change. It is believed that there is.
- Example 1 the heat treatment set temperature was 200 ° C and 300. The procedure was performed under the same conditions except that the heat treatment was performed at C and 350 ° C.
- CDS-1 was not synthesized because the powder XRD pattern characteristic of the original layered compound PLS-1 was shown. This indicates that the structure changes from PLS-1 to CDS-1 at the heat treatment temperature of about 400 ° C as shown in Fig. 12.
- FIG. 13 shows an XRD chart of the product when the temperature was raised to 400 ° C. at 1 ° C. per minute and held at that temperature for 5 hours. It can be seen that this product changed to a crystalline compound that was clearly different from the layered crystalline compound PLS-1 shown in FIG.
- the dehydration temperature is 200_700. C and the firing temperature was changed at 50 ° C intervals.
- the heating temperature was not specified, and as shown in FIG. 15, the heating temperature was raised to 400 ° C. at a heating rate of 1 to 20 ° C. per minute, and each was maintained for 5 hours.
- the temperature is preferably raised to 5 ° C or less per minute. .
- the pattern was not different from the CDS-1 pattern shown in 3, confirming that CDS-1 was obtained. [0089] Further, at a heating temperature of 400 ° C, even if the heating temperature was 20 ° C or more per minute, the XRD pattern of the CDS-11 shown in Example 13 was different from that of the XRD pattern. Example 16 confirmed that 1 was obtained.
- the XRD chart when the temperature was raised to 400 ° C. at 1 ° C. per minute and fired at each holding time, as shown in FIG. 15, is shown.
- the XRD chart when the temperature was raised to 400 ° C. at 1 ° C. per minute and fired at each holding time, as shown in FIG. 15, is shown.
- CDS-1 with a short sintering retention time gives a slightly brownish powder due to the incompletely burned organic template, whereas CDS-1 which has been kept for a long time has a near white color.
- Ga (NO) ⁇ 8 ⁇ 0 (Soekawa Chemical Co., Ltd.) was added in an amount of 0.030 g so that the molar ratio of Ga to the raw material was 1% or less, and otherwise the same.
- a product having the same powder XRD pattern as that of PLS-1 was obtained. From ICP analysis of this product, 0.032 (wt / wt%) of Li was detected. Next, with reference to the Li-containing P LS- 1, in the same manner as in Example 1 was subjected to dehydration polycondensation by vacuum heating of 500 ° C, 5 X 10- 6 torr. Also in this example, a product considered to have the same structure as CDS-1 was obtained from powder XRD and NMR measurements.
- TMAOH tetramethylammonium-palladium hydroxide: manufactured by Tokyo Chemical Industry Co., Ltd., reagent grade
- 25.4 g 0.5N KOH10.
- Og HO 68.6 g, (1,4-dioxane: manufactured by Tokyo Chemical Industry Co., Ltd.)
- SUS autoclave manufactured by Makabe Giken Co., Ltd.
- the PLS film was transferred to a firing furnace (Fama 300, manufactured by Yamato Scientific Co., Ltd., with a forced exhaust system), and the temperature was raised from room temperature to 450 ° C at a firing rate of 1 ° C per minute. By baking for 10 hours, it was converted to a CDS-1 film. Next, in order to evaluate the crystallinity of the obtained CDS-1 film, X-ray diffraction measurement was performed. The diffraction peak of the d value shown in Table 18 or Table 19 and the mullite tube as a support were obtained. A diffraction peak was obtained.
- a CDS-1 membrane was synthesized under the same conditions and by the same operation as in Example 27 except that the hydrothermal synthesis condition of the PLS membrane was changed to 150 ° C for 24 hours.
- the X-ray diffraction peak of the obtained film a broad halo peak was observed in the region of 20 to 20 ° (CuK a) in addition to the peak of CDS-1 and the mullite tube as a support.
- the film thickness was less than 1 m, and CDS-1 crystals were not observed in some places by electron microscopy and microscopic observation.
- Example 27 was the same as Example 27 except that the hydrothermal synthesis condition of the PLS film was changed to 150 ° C for 72 hours.
- a CDS-1 membrane was synthesized under the same conditions and operation.
- the X-ray diffraction peak of the obtained film a broad halo peak was observed over a region of 20 to 30 ° (CuK a) in addition to the peaks of CDS-1 and the mullite tube as a support.
- the film thickness was 1 ⁇ m or less, and the CDS_1 crystal was not observed in some places by electron microscopy.
- Example 2 The same conditions as in Example 1 were used except that the method of applying the PLS seed crystal to the mullite tube was a method of sucking (Suite ion), and the hydrothermal synthesis conditions of the PLS film were set to 150 ° C for 24 hours. A CDS-1 membrane was synthesized using the same procedure.
- the method of sucking the PLS seed crystal into the surface of the mullite tube is as follows: add 0.5 g of PLS crystal to 100 g of ion-exchanged water, and use an ultrasonic cleaner (Azwan, US-4 type, 500 W output) for 10 minutes.
- the mullite tube After the treatment, the mullite tube whose one opening is sealed with Teflon (registered trademark) tape is immersed, and the other side is connected to a vacuum pump to suck the aqueous solution of the PLS crystal. Applied. Thereafter, the mullite tube was dried at 70 ° C for 24 hours, and then the PLS membrane was subjected to hydrothermal synthesis. As the X-ray diffraction peak of the obtained film, only the peak of the mullite tube as a support was observed. In addition, almost no CDS-1 crystals were observed by electron microscopy.
- Teflon registered trademark
- a CDS-1 film was synthesized under the same conditions and by the same operation as in Example 30, except that the hydrothermal synthesis conditions for the PLS film were changed to 150 ° C for 72 hours.
- the hydrothermal synthesis conditions for the PLS film were changed to 150 ° C for 72 hours.
- a broad halo peak was observed in the region of a mullite tube as a support and in a region of 20 to 30 ° (CuK a).
- Example 30 a CDS-1 film was synthesized under the same conditions and by the same operation, except that the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours. Regarding the X-ray diffraction peak of the obtained film, broad and low peaks were observed over the peak of the mullite tube as the support and in the region of 20 to 30 ° (CuK a). In some cases, CDS-1 crystals were not observed by electron microscopy.
- the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours.
- the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours.
- the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours.
- the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours.
- the hydrothermal synthesis treatment condition of the PLS film was set to 160 ° C for 72 hours.
- a CDS-1 membrane was synthesized under the same conditions and by the same operation as in Example 33 except that the hydrothermal synthesis treatment conditions for the PLS membrane were set to 160 ° C for 240 hours. As the X-ray diffraction peak of the obtained film, only the peak of the alumina tube as the support was observed. In addition, almost no CDS-1 crystals were observed by electron microscopy.
- Example 33 a CDS-1 film was synthesized under the same conditions and by the same operation, except that the seeding force Suction to the alumina tube was changed. As the X-ray diffraction peak of the obtained film, only the peak of the alumina tube as the support was observed. In electron microscopy, almost all
- the CDS-1 crystal had a force that was not observed.
- Example 27 a CDS-1 film was synthesized under the same conditions and under the same operation, except that the hydrothermal synthesis conditions of the PLS film were changed to 130 ° C. for 72 hours. As the X-ray diffraction peak of the obtained film, only the peak of the mullite tube as the support was observed. In addition, CDS-1 crystals were hardly observed in the electron microscope observation.
- Example 27 a CDS-1 film was synthesized under the same conditions and under the same operation, except that the hydrothermal synthesis conditions of the PLS film were changed to 180 ° C. for 72 hours. As the X-ray diffraction peak of the obtained film, only the peak of the mullite tube as the support was observed. In addition, CDS-1 crystals were hardly observed in the electron microscope observation.
- Example 27 the seeding method for the mullite tube was set to Suction, and the PLS membrane was hydrothermally synthesized.
- a CDS-1 membrane was synthesized under the same conditions and the same operation, except that the processing conditions were changed to 130 ° C for 72 hours.
- the X-ray diffraction peak of the obtained film only the peak of the mullite tube as the support was observed. Also, almost no CDS-1 crystals were observed by electron microscopy.
- Example 27 a CDS-1 membrane was synthesized under the same conditions and the same operation, except that the seeding method for the mullite tube was set to Suction and the hydrothermal synthesis processing conditions of the PLS membrane were set to 180 ° C for 72 hours. As the X-ray diffraction peak of the obtained film, only the peak of the mullite tube as a support was observed. Also, almost no CDS-1 crystals were observed by electron microscopy.
- Table 20 summarizes the conditions for synthesizing the PLS film for Examples 27 to 35 and Comparative Examples 1 to 4.
- FIG. 2 shows an electron micrograph of the PLS film synthesized in Example 27 and the fired CDS-1 film.
- Example 3 P Rubb ⁇ ng 1 5 0/7 2 1
- Example 4 P M Suction 1 5 0/2
- Example 7 NGK Rubbbi ng ⁇ 5 0/7 2 1
- Example 8 NGK Rubbing ng 1 6 0/2 4 0
- NGK Nippon insulator alumina tube
- Table 21 summarizes the nitrogen gas permeation amounts of the PLS films obtained in Examples 39 to 35.
- Example 1 Example 2 4.47 X 1
- CDS-1 membrane obtained in Example 27 separation of ethanol / water by pervaporation was performed.
- One end of the CDS-1 film was sealed using a Toll seal (manufactured by Varian), and the other side was similarly connected to a 1-inch to 4-inch SUS tube with the Toll seal.
- the SUS tube was connected to a vacuum pump.
- the effective area of the CDS-1 film was 7.15 cm 2 .
- the feed solution was a 2 vol% aqueous ethanol solution, and the feed solution was heated to 40 ° C. A permeate was collected by providing a trap for liquid nitrogen on the permeate side.
- Example 45 the same operation was performed for 24 hours, and then the permeate was collected. As a result, the separation coefficient of water with respect to ethanol was 32, and the permeation flow rate was 0.27 kgZm 3 'h. Compared with Example 45, the water permselectivity (hydrophilicity) was slightly increased. It is considered that the reason for the water selective permeable membrane (hydrophilic membrane) is that TMA (tetramethylammonium) and Si—OH groups remain in the membrane during condensation from PLS. . In the CDS-1 film of Example 1, the amount of residual TMA and the amount of Si—OH groups can be controlled by changing the firing conditions and temperature for 10 hours at a firing temperature of 450 ° C. for 10 hours. It is thought that it is possible, and there is a possibility that a membrane with different properties can be synthesized over a wide range, from hydrophilic membrane to hydrophobic membrane such as silicalite. -
- Example 45 In the same manner as in Example 45, using a CDS-1 membrane, separation of ethanol Z water was performed by a pervaporation method.
- the firing condition of the CDS-1 film was set to 600 ° C for 10 hours. That is, TMA and Si—OH groups were completely removed. At this time, the effective area of the CDS-1 film was 6.59 cm 2 .
- the supply amount was a 5 vol% ethanol aqueous solution, and the supply solution was heated to 40 ° C.
- a liquid nitrogen trap was provided to collect the permeate.
- the composition ratio of ethanol and water in the feed and permeate was analyzed by gas chromatography attached to the column of Volapak Q.
- the separation coefficient of water with respect to ethanol was 0.0188, and the permeation flow rate was 0.53 kg./m 3 'h. That is, a hydrophobic film could be synthesized from a hydrophilic film by changing the firing conditions.
- the solution to be subjected to the heat treatment was an aqueous solution obtained by adding 2 g of 1N-KOH aqueous solution and 2 g of 26% concentration of TMAOH (tetramethyl ammonium hydroxide: manufactured by Tokyo Chemical Industry Co., Ltd., reagent grade) to 150 mL of ion-exchanged water.
- the hydrothermal treatment temperature was 150 ° C for 24 hours.
- the mullite tube was thoroughly washed with water, after 24 hours drying at 70 ° C, the temperature was raised at a firing rate of 1 ° C per minute to room temperature ⁇ 450 ° C, and calcined for 10 hours at 4 5 0 ° C.
- the thickness of this film determined by electron microscopy was about 3 ⁇ m.
- Example 48 The same operation was performed as in Example 48 except that the hydrothermal treatment temperature was changed from 150 ° C. to 48 hours.
- the thickness of this film was about 5 ⁇ m.
- This PLS-1 is placed in a glass tube with an inner diameter of 25 mm, connected to a vacuum line, and heated from room temperature to 500 ° C over 4 hours under a vacuum of 5 X lCT 6 torr, held for 4 hours, and over 1 hour
- the mixture was subjected to a heat treatment consisting of three steps of cooling to room temperature to obtain CDS-1 zeolite as a gray powder as a product.
- CDS-1 zeolite is formed by a thin scale-like crystal morphology with a side of l ⁇ 2 / m and a thickness of 0.5 m, which is structurally similar to PLS-1 which is a layered structure. I knew it.
- CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 575 ° C. to synthesize CDS-1. Also in this production example, CDS-1 was obtained as a product.
- CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 650 ° C. Also in this production example, CDS-1 was obtained as a product. ⁇
- CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 725 ° C. to synthesize CDS-1. Also in this production example, CDS-1 was obtained as a product.
- CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 800 ° C to synthesize CDS-1. Also in this production example, CDS-1 was obtained as a product. _
- CDS-1 was synthesized under the same conditions except that heat treatment was performed at a set temperature of 425 ° C.
- a gas-phase Beckmann rearrangement reaction for obtaining ⁇ -force prolactam from cyclohexanone oxime was carried out in a fixed-bed reactor having an inner diameter of 8 mm.
- the catalyst was a powder, it was used in combination with quartz wool.
- the granules were subjected to compression molding and then pulverized to prepare 10 to 20 mesh.
- the amount of the catalyst was 0.5 g.
- the approximate length of the catalyst layer is about 30 mm.
- a solution having a concentration of 5% cyclohexanone oxime was vaporized and supplied to the reactor together with a carrier gas (nitrogen).
- the reaction product was collected and cooled with dry ice methanol.
- the obtained reaction product was analyzed by gas chromatography (J & W Scientific DB—1701 Length 30 m, ⁇ . 25 mm ′) using methyl perdecanoate as an internal standard. Confirmation of the product was performed using GCMS (Varian Inova500).
- the solid acid point was measured by the ammonia TPD (Japan Bell TPD-1AT (TCD Dec.)) method.
- x number of moles of starting cyclohexanone oxime
- the reaction was carried out by flowing nitrogen at a flow rate of 10 ml / min.
- the conversion of cyclohexanone oxime was 75%
- the selectivity for e-prolactam was over 75%.
- reaction temperature was 370 ° C, that is, 0.5 g of CDS-I (H-exchange type) was used as a catalyst, and a 5% strength cyclohexanone oxime methanol solution was added to the starting material.
- the reaction was carried out by supplying a triple amount of 0.075 ml / min and flowing nitrogen as a sweep gas at 10 ml / min. In this case, the cyclohexanone oxime conversion rate was 98%, and the selectivity for ⁇ -force prolactam was over 37.8%.
- reaction temperature 350 ° C
- raw material 5% concentration cyclohexanone oxime methanol solution is supplied at 0.025mlZmin and used as a sweep gas gas.
- the reaction was performed by flowing nitrogen at 10 ml / min. In this case, the conversion of cyclohexanone oxime was 40% and the selectivity of ⁇ -prolactam was slightly over 50%. .
- the present invention relates to a novel zeolite.
- a zeolite having a new crystal structure, low cost, and having micropores having a high silica content is provided.
- This zeolite can be applied to solids for supporting metals, separation sorbents, shape-selective solid catalysts, ion exchangers, chromatography packing materials and chemical reaction fields.
- CDS-1 zeolite having a new crystal structure can be formed easily, easily, at low cost, and efficiently.
- the method of the present invention is a method of obtaining a higher-dimensional structure by directly dehydrating and polycondensing the skeletal structure of the precursor.
- the obtained zeolite may have different physical and chemical properties, and the method of the present invention can provide a concept as a new preparation method of zeolite synthesis. Since conversion to zeolite is possible at a relatively low temperature, there is a possibility to introduce a metal oxide that decomposes at a high temperature, and a new skeleton-substituted zeolite can be produced.
- the present invention has a new structure and function It enables the supply of zeolite at a low cost by a simple method, and enables the creation of new technologies and new industries in the zeolite utilization field.
- the present invention for example, hydrothermal synthesis is performed using PLS serving as a seed crystal, and the Si-OH group in the obtained PLS film is condensed, whereby the CDS-1 film can be formed in a simple process. Can be converted.
- the present invention provides a simple zeolite membrane that can be employed in industrial liquid and gas separation processes and the like, and it is possible to manufacture the zeolite membrane in a short period of time. In the petrochemical industry, it can be suitably used as a membrane reactor having separation and catalysis.
- the present invention it is possible to provide a novel Beckmann rearrangement reaction which enables highly efficient production of ⁇ -force prolatatam from cyclohexanone oxime using a novel silica-based zeolite catalyst.
- the CDS-1 used in the present invention can be recovered and reused because it can have inexpensive 'tetramethylammonium-dimethylhydroxylate as a crystal modifier, because the molecular size is small and the CDS-1 can be used. This makes it possible to construct a low-cost synthesis process compared to the conventional method.
- This CDS-1 is a raw material consisting of only a silica source, which is different from ordinary alumina-containing zeolite, does not have the acidic properties derived from the alumina-silica bond, and therefore, according to the present invention, Thus, a reaction method different from the conventional reaction utilizing solid acid properties is provided.
- fuming sulfuric acid is mainly used as a catalyst, and it is known that a large amount of ammonium sulfate co-produces when neutralized with ammonia. A clean reaction process can be provided without producing any by-products.
- ADVANTAGE OF THE INVENTION By this invention, it becomes possible to establish the production system of (epsilon) one-pot prolatatam using the economical and low environmental load synthetic process.
- FIG. 1 is a diagram showing a skeleton structure of CDS-1 zeolite represented by a general formula of the present invention from three arbitrary directions.
- the white sphere represents the S source and the gray sphere represents the ⁇ atom.
- FIG. 2 is a view showing the similarity of the crystal structures of CDS-1 zeolite represented by the general formula of the present invention and a crystalline layered silicate PLS-1 as a precursor.
- White spheres represent Si and gray spheres represent O.
- FIG. 3 CDS-1 zeolite represented by the general formula of the present invention and a crystalline layer form as a precursor
- FIG. 2 is a view showing two azimuthal forces other than FIG. 1 showing the similarity in crystal structure of silicate PLS-1.
- FIG. 4 is a spectrum diagram showing 29 Si-MAS NMR results of CDS-1 zeolite obtained in Example.
- FIG. 5 is a scanning electron microscope (SEM) photograph of the crystalline layered compound PLS-1 obtained in the example.
- FIG. 6 is a graph of a TG-DTA measurement of the crystalline layered compound PLS-1 represented by the general formula of the present invention. The left shows the weight change and the right shows the specific heat.
- FIG. 7 is a graph showing nitrogen gas desorption and adsorption isotherms of the crystalline layered compounds PLS-1 and CDS-1 zeolites obtained in the examples. Above is the desorption isotherm, below is the adsorption isotherm.
- FIG. 8 is a diagram showing an argon gas desorption isotherm of CDS-1 zeolite obtained in Example (top) and a diagram showing the pore size distribution (bottom) obtained from NLDFT analysis. Above is the desorption isotherm and below is the adsorption isotherm.
- FIG. 9 is a diagram showing calculated pore diameters of the skeleton structure of CDS-1 zeolite obtained in the examples.
- FIG. 10 is a diagram showing a result of Rietveld analysis using powder XRD data of CDS-1 zeolite obtained in the example. (+) Indicates the observed value, the solid line indicates the calculated value, the vertical bar indicates the position of black reflection, and the bottom line indicates the difference between the observed value and the calculated value.
- FIG. 11 is a scanning electron microscope (SEM) photograph of CDS-1 zeolite obtained in the example.
- FIG. 12 is a view showing a powder RD pattern at each set temperature in a vacuum heat treatment.
- FIG. 13 C obtained by heating at 1 ° C. per minute to 400 ° C. and calcining for 5 hours as shown in the example.
- FIG. 14 is a chart of powder X-ray crystal structure analysis of CDS-1 zeolite obtained by raising the temperature to each temperature at 1 ° C. per minute and firing at each temperature for 5 hours. For comparison, the XRD chart of the precursor layered crystalline compound PLS-1 is shown at the bottom.
- FIG. 15 is a chart of powder X-ray crystal structure analysis of CDS-1 zeolite obtained by heating at 400 ° C. at each heating temperature and calcining for 5 hours.
- FIG. 16 is a chart of powder X-ray crystal structure analysis of CDS-1 zeolite obtained by heating up to 400 ° C. at 1 ° C. per minute and calcining each time.
- FIG. 17 is an electron micrograph of a PLS film and a fired CDS-1 film.
- FIG. 18 shows a chart of a powder X-ray crystal structure analysis of PLS.
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Abstract
Description
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AT04818561T ATE540900T1 (de) | 2003-11-17 | 2004-11-17 | Siliciumreicher zeolith cds-1 |
EP04818561A EP1688393B1 (en) | 2003-11-17 | 2004-11-17 | High silica cds-1 zeolite |
US10/579,720 US20070112189A1 (en) | 2003-11-17 | 2004-11-17 | High silica cds-1 zeolite |
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JP2003386809A JP4547494B2 (ja) | 2003-11-17 | 2003-11-17 | CDS−1を用いたε−カプロラクタムの製造方法 |
JP2003387299A JP4348431B2 (ja) | 2003-11-17 | 2003-11-17 | 高シリカ型cds−1ゼオライト膜及びその製造方法 |
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JP2013177312A (ja) * | 2005-10-12 | 2013-09-09 | Basf Se | ケイ酸塩の製造方法 |
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JP4898502B2 (ja) * | 2007-03-15 | 2012-03-14 | 三菱重工業株式会社 | 流体の運搬方法 |
JP2008221176A (ja) * | 2007-03-15 | 2008-09-25 | Mitsubishi Heavy Ind Ltd | 脱水システム及び脱水方法 |
JP4427572B2 (ja) * | 2007-03-15 | 2010-03-10 | 三菱重工業株式会社 | 脱水装置 |
BRPI0819297A2 (pt) | 2008-03-14 | 2015-05-12 | Mitsubishi Heavy Ind Ltd | Sistemas e métodos de desidratação |
USRE46318E1 (en) | 2009-03-13 | 2017-02-21 | Sun Chemical Corporation | Colored fluids for electrowetting, electrofluidic, and electrophoretic technologies |
CA2769402A1 (en) * | 2009-08-04 | 2011-02-10 | Sun Chemical Corporation | Colored conductive fluids for electrowetting and electrofluidic technologies |
US8772476B2 (en) | 2011-10-28 | 2014-07-08 | Honeywell International Inc. | Gas and liquid phase catalytic Beckmann rearrangement of oximes to produce lactams |
US9375678B2 (en) * | 2012-05-25 | 2016-06-28 | Georgia Tech Research Corporation | Metal-organic framework supported on porous polymer |
US9994501B2 (en) | 2013-05-07 | 2018-06-12 | Georgia Tech Research Corporation | High efficiency, high performance metal-organic framework (MOF) membranes in hollow fibers and tubular modules |
US9687791B2 (en) | 2013-05-07 | 2017-06-27 | Georgia Tech Research Corporation | Flow processing and characterization of metal-organic framework (MOF) membranes in hollow fiber and tubular modules |
WO2016084679A1 (ja) | 2014-11-25 | 2016-06-02 | 日本碍子株式会社 | 分離膜構造体 |
JP6964479B2 (ja) * | 2017-10-03 | 2021-11-10 | エヌ・イーケムキャット株式会社 | 希土類元素骨格置換ゼオライト及びその製造方法、並びにこれらを用いたNOx吸着材、選択的還元触媒及び自動車排ガス触媒 |
CN112820888B (zh) * | 2021-03-19 | 2022-04-19 | 中国科学技术大学 | 单原子与纳米晶复合结构的燃料电池催化剂的制备方法 |
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JPH07291620A (ja) * | 1994-04-22 | 1995-11-07 | Mizusawa Ind Chem Ltd | 高耐熱水性高シリカゼオライト及びその製造方法 |
JP2003073116A (ja) * | 2001-08-31 | 2003-03-12 | Takeshi Kojima | 金属材料、酸性洗浄液のゲル化剤。 |
JP2004175661A (ja) * | 2002-11-14 | 2004-06-24 | National Institute Of Advanced Industrial & Technology | 結晶性層状化合物とその製造方法 |
JP2004339044A (ja) * | 2003-04-25 | 2004-12-02 | National Institute Of Advanced Industrial & Technology | 新規ゼオライト |
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ATE339249T1 (de) * | 1993-04-23 | 2006-10-15 | Exxonmobil Res & Eng Co | Molekularsiebschichten und verfahren zu ihrer herstellung |
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- 2004-11-17 US US10/579,720 patent/US20070112189A1/en not_active Abandoned
- 2004-11-17 WO PCT/JP2004/017106 patent/WO2005047182A1/ja active Application Filing
- 2004-11-17 AT AT04818561T patent/ATE540900T1/de active
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JPH07291620A (ja) * | 1994-04-22 | 1995-11-07 | Mizusawa Ind Chem Ltd | 高耐熱水性高シリカゼオライト及びその製造方法 |
JP2003073116A (ja) * | 2001-08-31 | 2003-03-12 | Takeshi Kojima | 金属材料、酸性洗浄液のゲル化剤。 |
JP2004175661A (ja) * | 2002-11-14 | 2004-06-24 | National Institute Of Advanced Industrial & Technology | 結晶性層状化合物とその製造方法 |
JP2004339044A (ja) * | 2003-04-25 | 2004-12-02 | National Institute Of Advanced Industrial & Technology | 新規ゼオライト |
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JP2013177312A (ja) * | 2005-10-12 | 2013-09-09 | Basf Se | ケイ酸塩の製造方法 |
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Publication number | Publication date |
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EP1688393A4 (en) | 2009-05-06 |
US20070112189A1 (en) | 2007-05-17 |
ATE540900T1 (de) | 2012-01-15 |
EP1688393B1 (en) | 2012-01-11 |
EP1688393A1 (en) | 2006-08-09 |
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