WO2015024379A1 - 一种具有中、微孔复合孔道Beta分子筛的制备方法 - Google Patents
一种具有中、微孔复合孔道Beta分子筛的制备方法 Download PDFInfo
- Publication number
- WO2015024379A1 WO2015024379A1 PCT/CN2014/073856 CN2014073856W WO2015024379A1 WO 2015024379 A1 WO2015024379 A1 WO 2015024379A1 CN 2014073856 W CN2014073856 W CN 2014073856W WO 2015024379 A1 WO2015024379 A1 WO 2015024379A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyquaternium
- aluminum
- source
- mesopores
- molecular sieve
- Prior art date
Links
- 239000002808 molecular sieve Substances 0.000 title claims abstract description 43
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims description 29
- 238000002425 crystallisation Methods 0.000 claims description 21
- 230000008025 crystallization Effects 0.000 claims description 20
- 229920000289 Polyquaternium Polymers 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- 239000010703 silicon Substances 0.000 claims description 18
- 239000000499 gel Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical class [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical class [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- -1 alkali metal salts Chemical class 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 5
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical group [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 claims description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 150000007529 inorganic bases Chemical class 0.000 claims description 4
- 150000007530 organic bases Chemical group 0.000 claims description 4
- 229920002553 poly(2-methacrylolyloxyethyltrimethylammonium chloride) polymer Polymers 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical group O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000012265 solid product Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical group CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 150000003863 ammonium salts Chemical group 0.000 claims 1
- 150000004679 hydroxides Chemical class 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000002194 synthesizing effect Effects 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000012512 characterization method Methods 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 7
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 125000001453 quaternary ammonium group Chemical class 0.000 description 6
- 229910021536 Zeolite Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000010457 zeolite Substances 0.000 description 5
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920000688 Poly[(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)] Polymers 0.000 description 3
- YIOJGTBNHQAVBO-UHFFFAOYSA-N dimethyl-bis(prop-2-enyl)azanium Chemical compound C=CC[N+](C)(C)CC=C YIOJGTBNHQAVBO-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229920006322 acrylamide copolymer Polymers 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006266 etherification reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011987 methylation Effects 0.000 description 2
- 238000007069 methylation reaction Methods 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 1
- LXUNZSDDXMPKLP-UHFFFAOYSA-N 2-Methylbenzenethiol Chemical compound CC1=CC=CC=C1S LXUNZSDDXMPKLP-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WRIHUTUEMYRMHG-UHFFFAOYSA-N Cl.CC(C(OC(C(=C)C)=O)(C)C)N.NN Chemical compound Cl.CC(C(OC(C(=C)C)=O)(C)C)N.NN WRIHUTUEMYRMHG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 101150113959 Magix gene Proteins 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 230000009615 deamination Effects 0.000 description 1
- 238000006481 deamination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QUSNBJAOOMFDIB-UHFFFAOYSA-O ethylaminium Chemical compound CC[NH3+] QUSNBJAOOMFDIB-UHFFFAOYSA-O 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012229 microporous material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 1
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 1
- 238000006177 thiolation reaction Methods 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- ZSDSQXJSNMTJDA-UHFFFAOYSA-N trifluralin Chemical compound CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O ZSDSQXJSNMTJDA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/04—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/46—Other types characterised by their X-ray diffraction pattern and their defined composition
- C01B39/48—Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/45—Aggregated particles or particles with an intergrown morphology
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/14—Pore volume
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
- C01P2006/17—Pore diameter distribution
Definitions
- the invention relates to a method for preparing a beta molecular sieve. Background technique
- Beta molecular sieve is the only zeolite with a three-dimensional 12-membered ring straight channel system. Its unique pore structure and acidity make Beta zeolite have high hydrocracking, hydroisomerization catalytic activity and adsorption capacity for linear terpene hydrocarbons. And have good resistance to sulfur and nitrogen poisoning.
- Beta molecular sieves with USY will increase the yield of gasoline. In terms of fine chemicals, Beta molecular sieves have good activity and selectivity in dehydration and deamination.
- Xiao Feng received the use of tetraethylammonium hydroxide TEAOH as a microporous templating agent, and the cationic polymer was a mesoporous stencil to synthesize a multi-stage channel.
- Beta (Angew. Chem. 2006, 118, 3162-3165).
- DR Serrano will first prepare the gel Pre-crystallizing at a certain temperature for a certain period of time, after cooling to room temperature, adding a silicon germanium coupling agent to the seed crystal, and finally crystallization at a high temperature to form a multi-stage channel of the Beta molecular sieve (Microporous and Mesoporous Materials 115 (2008) 504-513)
- Their common feature is the use of the expensive microporous templating agent TEAOH during the synthesis process.
- Liu Baoyu et al. used a hexammonium quaternary ammonium salt surfactant as a template to synthesize a multi-stage channel of the Beta molecular sieve.
- CN102826564A discloses a preparation method of a Beta zeolite molecular sieve having a multi-stage pore structure, using tetraethyl orthosilicate as a silicon source, sodium metaaluminate as an aluminum source, and a hexammonium-based cationic quaternary ammonium salt surfactant as a silicon source.
- the templating agent although not using TEAOH, is expensive and unsuitable for use, and does not utilize large-scale industrial production. Summary of the invention
- Beta molecular sieve comprising a Beta molecular sieve having a multi-stage pore structure having a mesopores having a pore diameter of 2 to 13 nm; in a preferred embodiment, the mesoporous pore size is 3 ⁇ 10nm.
- a further object of the present invention is to provide a method for preparing the above-mentioned Beta molecular sieve, which comprises the initial gel mixture prepared from a silicon source, an aluminum source, a polyquaternium P, water and an alkali source at 180 to 220 ° C.
- the Beta molecular sieve is prepared by crystallization under hydrothermal conditions; wherein, the polyquaternium P serves as a structure directing agent for micropores and mesopores.
- the polyquaternium P is selected from the group consisting of polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-11, polyquaternium- 22. Any one or any one of polyquaternium-32, polyquaternium-37, polyquaternium-39, and polyquaternium-44.
- the aluminum source is selected from the group consisting of an organic aluminum source and/or an inorganic aluminum source;
- the silicon source is selected from the group consisting of a silicone source and/or an inorganic silicon source;
- the base source is selected from the group consisting of an organic base and/or an inorganic base.
- the organoaluminum source is aluminum isopropoxide.
- the inorganic aluminum source is selected from any one or any of alumina, aluminum hydroxide, aluminum chloride, aluminum sulfate, aluminum nitrate, and sodium aluminate.
- the silicone source is selected from the group consisting of methyl orthosilicate and/or tetraethyl orthosilicate.
- the inorganic silicon source is selected from any one or any of silica sol, silica gel, silica, and water glass.
- the organic base is selected from the group consisting of organic amines and/or alkali metal salts of organic alcohols.
- the inorganic base is selected from any one or any of alkali metal or alkaline earth metal hydroxides, oxides, and carbonates.
- the alkali source is sodium hydroxide and/or potassium hydroxide.
- the specific synthetic steps of the Beta molecular sieve are as follows: a) mixing a silicon source, an aluminum source, sodium hydroxide and/or potassium hydroxide, a polyquaternium P and water to form the following Ratio of initial gel mixture:
- the polyquaternium P in the step a) is selected from the group consisting of polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22, poly Any one or more of quaternary ammonium salt-32, polyquaternium-37, polyquaternium-39, and polyquaternium-44.
- the aluminum source in the step a) is any one or any of aluminum isopropoxide, aluminum oxide, aluminum hydroxide, aluminum chloride, aluminum sulfate, aluminum nitrate, and sodium aluminate.
- the silicon source is any one or a mixture of any one of silica sol, silicone gel, methyl orthosilicate, tetraethyl orthosilicate, white carbon, and water glass.
- the crystallization temperature in the step b) is preferably 180 to 200 ° C, and the crystallization time is preferably 12 to 216 hours.
- the crystallization mode in the step b) may be static crystallization or dynamic crystallization.
- the step c) is dried and calcined to obtain a beta molecular sieve having a multi-stage pore structure having a mesoporous pore size of 2 to 13 nm.
- the step c) is dried and calcined to obtain a beta molecular sieve having a multi-stage pore structure having a mesoporous pore size of 3 to 10 nm.
- Beta molecular sieve has three 12-membered ring channels intersecting each other with a pore diameter ranging from 0.6 to 0.7 nm and a silica to alumina ratio of 20 to 100.
- the structure directing agent acts on the molecule In the synthesis of sieves or materials, it provides a template for the formation of molecular sieves or materials.
- the most common molecular sieve templates are organic amine compounds and quaternary ammonium ion-containing compounds.
- the silicon-aluminum ratio of the molecular sieve can be arbitrarily adjusted between 20 and 100 by adjusting the ratio of the raw materials in the initial gel.
- the polyquaternium P of the present invention is a polymer having a degree of polymerization of 10 to 100,000, and the degree of polymerization means an average degree of polymerization, that is, an average value of the number of repeating units contained in a polymer macromolecular chain.
- polyquaternium-6 is a copolymer of dimethyldiallylammonium chloride having a molecular formula of (C 8 H 16 ClN) n and n is a positive integer; the structural formula is:
- the polyquaternium-7 is a dimethyldiallyl ammonium chloride-acrylamide copolymer having a molecular formula of (C 8 H 16 ClN) n ⁇ (C 3 3 ⁇ 4NO) m , and m and n are positive integers;
- the structural formula is: Acetyl cellulose ether, , m and n are positive integers.
- the polyquaternium-11 is a diethyl thiolate complex of a mixture of 2-methyl-2-acrylic acid-2-(dimethylamino)ethyl ester and 1-vinyl-2-pyrrolidinone; the molecular formula is
- the polyquaternium-22 is a dimethyl diallyl ammonium chloride-acrylic acid copolymer having the formula (C 8 H 16 ClN) n ⁇ (C 3 3 ⁇ 4NO) m ; m and n are positive integers; for:
- the quaternary ammonium salt-32 is a ruthenium, osmium, iridium-trimethyl-2-(2-methyl-1-oxo-2-propenyloxy:)ethyl ammonium chloride-acrylamide copolymer,
- the molecular formula is (C 9 H 18 ClN0 2 ) n ⁇ (C 3 H 5 NO) m , m and n are positive integers; the structural formula is:
- the quaternary ammonium salt-37 is a homopolymer of hydrazine, hydrazine, hydrazine-trimethyl-2-[(2-methyl-1-oxo-2-propenyl)oxy]ethylamine hydrochloride;
- the molecular formula is (C 9 H 18 C1N0 2 :) ⁇ , ⁇ is a positive integer; the structural formula is:
- the quaternary ammonium salt-39 is dimethyldiallyl ammonium chloride-acrylamide-acrylic acid copolymerized
- V is (C 3 H 4 0 2 ) p ⁇ (C 8 H 16 ClN) n ⁇ (C 3 3 ⁇ 4NO) m; p, m, n are positive integers; the structural formula is:
- the formula is (C 6 H 9 N 2 ⁇ C 6 H 9 NO ⁇ CH 3 0 4 S) n , n is a positive integer; the structural formula is: Compared with the prior art, the present invention has the following advantages and benefits:
- the invention utilizes a high molecular polymer as a templating agent, and the raw material is cheap and easy to obtain, and does not require expensive TEAOH, thereby reducing the production cost of the beta molecular sieve by at least 90%, and laying a foundation for large-scale industrial application.
- Beta molecular sieve prepared by the invention has micropores and mesopores at the same time, avoids defects of single pores, and has broad application prospects in macromolecular adsorption and catalysis.
- Figure 1 is a scanning electron micrograph of Sample 1.
- the polyquaternium-6 used was purchased from Zhejiang Xinhaitian Biotechnology Co., Ltd.; the polyquaternium-7 and polyquaternium-10 used were purchased from Guangzhou Feirui Chemical Co., Ltd.; the polyquaternium-11 was purchased from Shandong Hong Source Chemical Co., Ltd.; Polyquaternium-22 was purchased from Haining Huangshan Chemical Co., Ltd.; Polyquaternium-32 was purchased from Jiangsu Feixiang Chemical Co., Ltd.; Polyquaternium-37 was purchased from Guangzhou Huicong Trading Co., Ltd.; Quaternary ammonium salt-39 was purchased from Guangzhou Shiyi Chemical Co., Ltd.; Polyquaternium-44 was purchased from Xiamen Jiayulai Chemical Co., Ltd. Limited.
- Beta molecular sieve having a multistage pore structure.
- the raw material type and ratio, crystallization mode, crystallization temperature, crystallization time and yield of the obtained product in the initial gel of the prepared samples 1 to 40 were calculated as follows:
- the weight of the molecular sieve product is 100 100% of the total dry weight of the initial gel.
- the dry base in the initial gel is silica, alumina, sodium oxide and/or potassium oxide.
- the silicon source a silica sol; Silica B; E orthosilicate; D n-methyl silicate; silica gel E; F water glass.
- Aluminum source 1 sodium aluminate; 11 aluminum chloride; 111 aluminum hydroxide; IV aluminum sulfate; V alumina; w aluminum isopropoxide; W aluminum nitrate.
- the samples 1-40 prepared in Example 1 were subjected to XRD characterization to confirm that they were Beta zeolite molecular sieves.
- the resulting The XRD pattern of sample 1-40 is consistent with the characteristic spectrum of the standard Beta zeolite molecular sieve.
- the typical XRD pattern is represented by sample 1, and the main diffraction peak position and peak intensity of 2 ⁇ at 5° ⁇ 50° are shown in Table 2.
- the results of other sample data are the same as those of Table 1.
- the positions and shapes of the diffraction peaks are the same, and the relative peak intensity fluctuates within ⁇ 5% depending on the synthesis conditions, indicating that the synthesized product has the characteristics of Beta structure.
- Table 2 XRD diffraction data of typical
- Example 3 Chemical composition of samples 1 to 40 prepared in Example 1
- the chemical composition was measured by an elemental analyzer.
- the instrument used was a Magix (PHILIPS) type X fluorescence analyzer, and the fluorescence intensity of the standard sample was measured by an IQ + non-standard quantitative analysis program. Corresponding to its standard composition, the influence of the interference line is deducted.
- the result measured by the elemental analyzer is the percentage of oxide of each element.
- the chemical composition of the sample and the silicon to aluminum ratio can be obtained by inversely pushing the percentage of the oxide of the element, as shown in Table 3. 3/: O 9s8sl£ 6/-oiAV
- Example 4 Characterization of micropore and mesoporous pore size distribution of samples 1-40
- the samples 1-40 prepared in Example 1 were subjected to nitrogen physical adsorption characterization.
- the instrument used was a Micromeritics Tristar 3000 nitrogen physics adsorber.
- the obtained samples 1-40 were pretreated before the nitrogen physical adsorption characterization.
- the pretreatment steps were as follows: the molecular sieve samples were vacuumed at normal temperature; after the vacuum conditions were reached, they were treated at 130 ° C for 2 h; Treated at 350 ° C for 2 h.
- the results of physical adsorption of nitrogen showed that the pore size of the sample 1-40 was 0.6-0.7 nm, and both of them contained mesoporous structure.
- the mesoporous pore size distribution, average pore diameter and mesoporous pore volume are shown in Table 4.
- samples 1-40 were pretreated.
- the pretreatment steps were as follows: The molecular sieve samples were evacuated at room temperature; after the vacuum conditions were reached, they were treated at 130 ° C for 2 h.
- the experimental results show that samples 1-33 have no peaks in the macroporous range of 50-2000 nm, and samples 34-40 contain large pores with pore sizes distributed in the range of 50-200 nm, as shown in Table 5.
- Table 5 Sample 34-40 macropore pore size distribution
- Example 6 Scanning electron microscopy characterization of samples
- Example 7 The samples 1 to 40 prepared in Example 1 were characterized by scanning electron microscopy.
- the instrument used was a Hitachi SU8020 field emission scanning electron microscope with an accelerating voltage of 25 kV. Scanning electron micrographs show that the morphology of samples 1-40 appears as a spherical aggregation of nanoparticles. A typical SEM image is represented by sample 1, as shown in Figure 1.
- Example 7
- Example 1 Samples 1, 2, 4, 7, 11, 12, 14, 15, 17, and 19 of Example 1 were respectively calcined at 550 ° C for 8 h without molecular sieve powder, and 1.0 g of the original molecular sieve powder was placed in a Teflon container. Add 5 ml of hydrofluoric acid aqueous solution (20%), shake and shake for 1 h. After the solids were sufficiently dissolved, the liquid was collected for 13 C liquid nuclear magnetic characterization. 13C liquid nuclear magnetics were performed on a Bruker DRX-400 NMR wave spectrometer. The results show that the following structural units are included: .
- Example 1 The sample 1, 2, 4, 7, 11, 12, 14, 15, 17 and 19 of Example 1 were calcined at 550 ° C for 8 h in a muffle furnace, and the physical adsorption was carried out according to the method of Example 4. In the test, the pretreatment process was vacuumed at 160 ° C for 10 h, and the others were unchanged. The obtained result is that the microporous pore volume of the above uncalcined molecular sieve raw powder is 0 cm 3 g_ compared with the calcined sample, and the total pore volume of the mesopores is reduced to 30-50%.
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Abstract
一种具有中、微孔复合孔道的 Beta分子筛的制备方法,其特征在于,含有2~13 nm的介孔,在合成过程中采用高分子聚合物同时作为微孔和介孔的导向剂,原料价格低廉且合成方法简单,具有广阔的工业应用前景。
Description
一种具有中、 微孔复合孔道 Beta分子筛的制备方法 技术领域
本发明涉及一种 Beta分子筛的制备方法。 背景技术
Beta分子筛是唯一具有三维十二元环直通道体系的沸石, 其独特的孔道 结构以及酸性使得 Beta分子筛具备很高的加氢裂化、 加氢异构化催化活性 和对直链垸烃的吸附能力, 并有良好的抗硫、 氮中毒能力。 可用于石化工 业中苯与丙烯烃化制异丙苯、 异丙苯歧化制二异丙苯、 甲苯异丙基化、 芳 烃垸基化、 二异丙苯垸基转移、 丙烯醚化、 甲醇芳构化、 环氧丙垸与乙醇 醚化、 苯酚甲基化、 苯胺甲基化、 异丙苯与甲苯垸基转移以及甲苯歧化与 垸基转移反应等催化剂的制备。 Beta分子筛同 USY的联合使用将提高汽油 的辛垸值。 在精细化工方面, Beta分子筛在脱水脱胺上具有很好的活性和 选择性。
但在实际应用中, 由于其相对狭窄的孔道结构会制约芳香烃等大分子在 其中的扩散, 容易造成积炭, 严重制约了 Beta分子筛在大分子反应中的应 用。
具有微介孔复合结构的多级孔道分子筛的发现, 为解决微孔中物质传递 扩散受限提供了新的方向和可能性。 肖丰收等使用四乙基氢氧化铵 TEAOH 作为微孔模板剂, 阳离子聚合物为介孔模版剂合成了多级孔道的
Beta(Angew. Chem. 2006, 118, 3162-3165 )。 D.R Serrano 首先将制备的凝胶
在一定温度下预晶化一定时间, 冷却到室温之后, 加入硅垸偶联剂与晶种 作用, 最后再在高温下晶化制得多级孔道的 Beta分子筛 (Microporous and Mesoporous Materials 115 (2008) 504-513) 他们共同的特点是, 在合成过程 中都需要使用昂贵的微孔模板剂 TEAOH。刘宝玉等人使用六铵基季铵盐表 面活性剂为模板剂合成了多级孔道的 Beta分子筛。 中国专利
CN102826564A中公开了一种多级孔结构的 Beta沸石分子筛的制备方法, 以正硅酸乙酯作为硅源, 以偏铝酸钠作为铝源, 以六铵基阳离子型季铵盐 表面活性剂作为模板剂, 虽然没有使用 TEAOH, 但其他原料价格昂贵, 不 宜获得, 不利用大规模的工业生产。 发明内容
本发明的目的在于提供一种 Beta分子筛,其特征在于,含有孔径为 2-13 nm的介孔的具有多级孔道结构的 Beta分子筛; 在一个优选的实施方式中, 所述介孔孔径为 3~10nm。
本发明的又一目的在于提供上述 Beta分子筛的制备方法,其特征在于, 将由硅源、铝源、聚季铵盐 P、水和碱源制成的初始凝胶混合物,在 180~220°C 水热条件下晶化制备 Beta分子筛; 其中, 聚季铵盐 P同时作为微孔和介孔 的结构导向剂。
在一个优选的实施方式中,所述聚季铵盐 P选自聚季铵盐 -6、聚季铵盐 -7、 聚季铵盐 -10、 聚季铵盐 -11、 聚季铵盐 -22、 聚季铵盐 -32、 聚季铵盐 -37、 聚季铵盐 -39、 聚季铵盐 -44中的任意一种或任意几种。
在一个优选的实施方式中, 所述铝源选自有机铝源和 /或无机铝源; 所
述硅源选自有机硅源和 /或无机硅源; 所述碱源选自有机碱和 /无机碱。 在一个优选的实施方式中, 所述有机铝源为异丙醇铝。
在一个优选的实施方式中, 所述无机铝源选自氧化铝、 氢氧化铝、 氯 化铝、 硫酸铝、 硝酸铝、 铝酸钠中的任意一种或任意几种。
在一个优选的实施方式中, 所述有机硅源选自正硅酸甲酯和 /或正硅酸 乙酯。
在一个优选的实施方式中, 所述无机硅源选自硅溶胶、 硅凝胶、 白炭 黑、 水玻璃中的任意一种或任意几种。
在一个优选的实施方式中, 所述有机碱选自有机胺和 /或有机醇的碱金 盐。
在一个优选的实施方式中, 所述无机碱选自碱金属或碱土金属的氢氧 化物、 氧化物、 碳酸盐中的任意一种或任意几种。
在一个优选的实施方式中, 所述碱源为氢氧化钠和 /或氢氧化钾。
在一个优选的实施方式中, 所述 Beta分子筛的具体合成步骤如下: a)将硅源、 铝源、 氢氧化钠和 /或氢氧化钾、 聚季铵盐 P和水混合, 形 成具有如下配比的初始凝胶混合物:
A1203: Si02摩尔比 = 0.005~0.5
Na20和 /或 K20: Si02摩尔比 =0.10~0.5
¾0: Si02摩尔比 =7~100
P: Si02质量比 =0.1~3;
b) 将所述步骤 a) 得到的初始凝胶混合装入不锈钢反应釜中, 密闭, 然后加热到 180~220°C, 晶化不少于 12小时;
c) 待晶化完成后, 固体产物经分离、 干燥, 即得所述 Beta分子筛。 在一个优选的实施方式中,所述步骤 a)中聚季铵盐 P选自聚季铵盐 -6、 聚季铵盐 -7、 聚季铵盐 -10、 聚季铵盐 -22、 聚季铵盐 -32、 聚季铵盐 -37、 聚 季铵盐 -39、 聚季铵盐 -44中的任意一种或几种。
在一个优选的实施方式中, 所述步骤 a) 中的聚季铵盐 P与 Si02质量 比优选为 P: Si02 =0.1-1.5; 进一步优选的实施方式为, 所述步骤 a) 中的 聚季铵盐 P与 Si02质量比 P: Si02 =0.1-0.8
在一个优选的实施方式中, 所述步骤 a) 中铝源为异丙醇铝、 氧化铝、 氢氧化铝、 氯化铝、 硫酸铝、 硝酸铝、 铝酸钠中任意一种或任意几种的混 合; 所述硅源为硅溶胶、 硅凝胶、 正硅酸甲酯、 正硅酸乙酯、 白炭黑、 水 玻璃中的任意一种或任意几种的混合。
在一个优选的实施方式中, 所述步骤 b) 中晶化温度优选 180~200°C, 晶化时间优选 12~216小时。
在一个优选的实施方式中, 所述步骤 b) 中晶化方式可以为静态晶化, 也可以为动态晶化。
在一个优选的实施方式中, 所述步骤 c)干燥后, 经过焙烧, 得到含有 孔径为 2~13 nm介孔的具有多级孔道结构的 Beta分子筛。
在一个优选的实施方式中, 所述步骤 c)干燥后, 经过焙烧, 得到含有 孔径为 3~10 nm介孔的具有多级孔道结构的 Beta分子筛。
根据本领域公知常识, Beta分子筛具有三个相互交叉的 12元环孔道, 微孔孔径范围为 0.6~0.7nm, 硅铝比为 20~100。
根据本领域公知常识, 所述结构导向剂, 也称模板剂, 作用是在分子
筛或者材料合成中, 为分子筛或材料的形成提供模板作用, 目前最常见的 分子筛模板剂为有机胺类化合物和含季铵离子的化合物。
本领域技术人员根据本发明所提供的技术方案, 结合本领公知常识, 通过对初始凝胶中原料配比的调节, 可将分子筛的硅铝比可在 20~100之间 任意调变。
本发明所述聚季铵盐 P,为聚合度 10~100000的聚合物,所述聚合度指 平均聚合度, 即聚合物大分子链上所含重复单元数目的平均值。
所述聚季铵盐 -11 为 2-甲基 -2-丙烯酸 -2- (二甲氨基)乙酯与 1-乙烯基 -2- 吡 咯 垸 酮 聚 合 物 的 硫 酸 二 乙 酯 复 合 物 ; 分 子 式 为
所述聚季铵盐 -22 为二甲基二烯丙基氯化铵-丙烯酸共聚物, 分子式为 (C8H16ClN)n · (C3¾NO)m ; m和 n为正整数; 结构式为:
所述季铵盐 -32为 Ν,Ν,Ν-三甲基 -2-(2-甲基 -1-氧代 -2-丙烯基氧基:)乙基 氯化铵 -丙烯酰胺共聚物, 分子式为 (C9H18ClN02)n · (C3H5NO)m, m和 n为 正整数; 结构式为:
式为 (C6H9N2 · C6H9NO · CH304S)n, n为正整数; 结构式为:
与现有技术相比, 本发明具有以下优点和有益效果:
( 1 ) 本发明利用高分子聚合物为模板剂, 原料廉价易得, 而不需要昂 贵的 TEAOH, 将 Beta分子筛的生产成本至少降低了 90%, 为大规模工业 应用奠定了基础。
(2 ) 本发明制备的 Beta分子筛同时具有微孔和介孔, 避免了单一孔道 的缺陷, 在大分子吸附和催化方面有着广阔的应用前景。 附图说明
图 1为样品 1的扫描电子显微镜图。 具体实施方式
下面通过实施例详述本发明, 但本发明并不局限于这些实施例。
实施例中所用的原料试剂均通过商业购买获得, 不经任何特殊处理直接 使用。
所用聚季铵盐 -6购自浙江新海天生物科技有限公司;所用聚季铵盐 -7和 聚季铵盐 -10购自广州飞瑞化工有限公司; 聚季铵盐 -11购自山东宏源化工 有限公司; 聚季铵盐 -22购自海宁市黄山化工有限公司; 聚季铵盐 -32购自 江苏飞翔化工股份有限公司; 聚季铵盐 -37购自广州慧聪贸易有限公司; 聚 季铵盐 -39购自广州诗茗化工有限公司; 聚季铵盐 -44购自厦门佳俐来化工
有限公司。
实施例 1: 样品 1-40制备
首先将铝源加入去离子水中, 搅拌均匀。 再向其中加入氢氧化钠和 /或 氢氧化钾, 混合均匀后, 加入硅源, 室温下继续搅拌直到形成均匀的硅铝 凝胶, 最后加入聚季铵盐 P, 搅拌均匀, 得到初始凝胶。 将初始凝胶移入带 聚四氟内衬的不锈钢反应釜中, 直接放入烘箱中静态晶化, 或放入转动烘 箱进行动态晶化, 所得固体产物经离心分离, 用去离子水洗涤至中性, 在
110°C下空气中干燥, 并于最后在马弗炉中于 550°C下焙烧 8h, 即得到具有 多级孔结构的 Beta分子筛。所制备的样品 1~40的初始凝胶中的原料类型及 配比、 晶化方式、 晶化温度、 晶化时间以及所得产物的产率分别如表 1 所 产率的计算方法为: 经过焙烧的分子筛产物重量 ÷初始凝胶中干基总 重量 X 100%。 其中, 初始凝胶中干基为氧化硅、 氧化铝、 氧化钠和 /或氧化 钾。
表 1分子筛合成配料及晶化条件表
硅源: a硅溶胶 ; b白炭黑; e正硅酸乙酯; d正硅酸甲酯; e硅凝胶; f水玻璃。
铝源: 1铝酸钠; 11氯化铝; 111氢氧化铝; IV硫酸铝; V氧化铝; w异丙醇铝; W硝酸铝。
实施例 2 : 样品 1-40的 XRD表征
对实施例 1中所制备的样品 1-40进行 XRD表征以确认为 Beta沸石分 子筛。 所采用仪器为 Philips X ert PROX型 X射线衍射仪, 铜靶, α辐 射源(λ= 1.5418 Α), 仪器工作电压为 40kv, 工作电流为 40mA。 所得到的
样品 1 -40的 XRD谱图与标准 Beta沸石分子筛的特征谱图一致。典型的 XRD 图谱以样品 1为代表, 2Θ在 5°~50°主要衍射峰位置和峰强度如表 2所示。 其他样品数据结果与表 1 相比, 衍射峰位置和形状相同, 依合成条件的变 化相对峰强度在 ±5%范围内波动, 表明合成产物具有 Beta结构的特征。 表 2典型样品的 XRD衍射数据
实施例 3: 实施例 1中制备的样品 1~40的化学组成
对实施例 1中所制备的样品 1~40通过元素分析仪进行化学组成测量, 所采用仪器为 Magix (PHILIPS) 型 X荧光分析仪, 通过 IQ+无标定量分析 程序, 将标准样品的荧光强度和其标准组成相对应, 扣除了干扰谱线的影 响。
经过元素分析仪测量的结果为各元素的氧化物的百分含量。元素的氧化 物的百分含量经过反推, 可以得到样品的化学组成及硅铝比, 如表 3所示。
3/: O 9s8sl£ 6/-oiAV
26 0.879 1 74 37
27 1.20 1 199 99.5
28 0.154 1 18 9
29 0.01 1 9.5 4.75
30 0.254 1 45 22.5
31 0.640 1 30 15
32 0.154 1 24.5 12.25
33 0.06 1 2 1
34 0.89 1 200 100
35 0.345 1 18 9
36 0.879 1 195 97.5
37 0.456 1 49.3 24.65
38 0.98 1 150 75
39 0.120 1 8.5 4.25
40 0.118 1 2 1
实施例 4: 样品 1~40的微孔和介孔孔径分布的表征
对实施例 1中所制备的样品 1-40进行氮气物理吸附表征。 所采用仪器 为 Micromeritics Tristar3000型氮气物理吸附仪。 在进行氮气物理吸附表征 之前, 对所得到的样品 1-40进行预处理, 预处理步骤如下: 在常温下将分 子筛样品抽真空处理; 当达到真空条件后,在 130°C处理 2 h; 之后在 350°C 处理 2 h。 氮气物理吸附结果表明, 样品 1-40微孔孔径为 0.6~0.7nm, 均含 有介孔结构, 介孔孔径分布、 平均孔径及介孔孔容如表 4所示。
表 4 样品 1-40介孔孔径分布
一级介孔 2-7 3.7 0.65 一级介孔 3-10 5.0 0.80 一级介孔 5-13 7.0 0.95 一级介孔 3-6.5 4.0 0.99 一级介孔 4-7 4.5 0.78 一级介孔 4-10 5.5 0.95 一级介孔 3-5 3.8 0.80 一级介孔 3-6.5 4.0 0.84 一级介孔 3.5-5.5 3.7 0.86 一级介孔 2.5-6.5 3.5 0.81
I级介孔 2-4.3 3.9 0.38 两级介孔
II级介孔 4-13 8.7 0.38
I级介孔 2.3-4.8 3.7 0.22 两级介孔
II级介孔 4-12 8.8 0.66
I级介孔 2.4-4.7 3.5 0.14 两级介孔
II级介孔 5-12 9.0 0.85
I级介孔 2.4-4.6 3.7 0.09 两级介孔
II级介孔 5-13 8.8 0.81
I级介孔 2.5-4.7 3.5 0.08 两级介孔
II级介孔 4.7-12.5 9.2 0.88
I级介孔 2.4-4.6 3.5 0.05 两级介孔
II级介孔 4.9-10 7.9 0.75
I级介孔 2.3-4.8 3.7 0.03 两级介孔
II级介孔 4.4-11.5 8.6 0.60
I级介孔 2.9-4.8 3.9 0.05 两级介孔
II级介孔 4.3-10 7.5 0.80
I级介孔 3-4.57 3.8 0.13 两级介孔
II级介孔 4.1-10.5 8.0 0.65 两级介孔 I级介孔 3.0-4.7 3.4 0.10
II级介孔 4.3-12 8.2 0.74
I级介孔 2.9-4.8 3.3 0.18 两级介孔
II级介孔 4.3-11 7.8 0.72
I级介孔 3.0-4.8 3.2 0.06 两级介孔
II级介孔 4.0-13 8.6 0.72
I级介孔 3.0-4.6 3.5 0.12 两级介孔
II级介孔 4.1-10 7.9 0.78
I级介孔 2.8-4.5 3.6 0.28 两级介孔
II级介孔 4.3-12 8.9 0.56
I级介孔 3-4.7 3.4 0.23 两级介孔
II级介孔 4.3-11 7.8 0.69
I级介孔 2.9-4.8 3.3 0.05 两级介孔
II级介孔 4.3-11 7.8 0.94 一级介孔 8.0-15.0 10.3 0.68 一级介孔 8.2-17 10.5 0.72 一级介孔 9-20 11.0 0.78 一级介孔 9.2-19 10.9 0.77 一级介孔 8.0-18 10.5 0.81 一级介孔 8.3-18 10.3 0.87 一级介孔 10-20 12.0 0.95 一级介孔 8.0-14.0 10.0 0.97 一级介孔 8.9-15.3 11.0 0.84 一级介孔 8.7-17.2 11.3 0.83 一级介孔 8.5-15.0 11.1 0.86 一级介孔 9.0-18.2 13.0 0.85 一级介孔 9.0-19.3 12.5 0.94 一级介孔 9.3-20.0 13.3 0.96
实施例 5: 实施例 1中制备的样品 1~40的大孔结构的表征 对实施例 1中所制备的样品 1-40进行大孔结构的表征。 所采用仪器为 Micromeritics AutoPore IV 9500压汞仪。 在进行大孔结构的表征之前, 对所 得到的样品 1-40进行预处理, 预处理步骤如下: 在常温下将分子筛样品抽 真空处理; 当达到真空条件后,在 130°C处理 2 h。实验结果表明,样品 1-33 在大孔区间 50~2000nm内没有峰, 样品 34-40含有孔径分布在 50~200nm 的大孔, 如表 5所示。 表 5 样品 34-40大孔孔径分布
对实施例 1 中所制备的 1~40样品进行扫描电镜表征。 所采用仪器为 Hitachi SU8020场发射扫描电镜, 加速电压为 25kV。 扫描电镜图显示, 样 品 1-40的形貌均呈现为纳米颗粒的球状的聚集。 典型的扫描电镜图以样品 1为代表, 如图 1所示。
实施例 7:
分别取实施例 1中样品 1、 2、 4、 7、 11、 12、 14、 15、 17和 19未经 马弗炉 550°C焙烧 8h的分子筛原粉 1.0 g,装入聚四氟乙烯容器中,加入 5ml 氢氟酸水溶液(20%), 震荡摇匀静置 lh。 待固体充分溶解之后, 收集液体 进行 13C 液体核磁表征。 13C 液体核磁在 Bruker DRX-400核磁共振波普仪 上进行。 结果显示, 含有如下结构单元:
。
分别取实施例 1中样品 1、 2、 4、 7、 11、 12、 14、 15、 17和 19未经 马弗炉 550°C焙烧 8h的分子筛原粉, 按照实施例 4中方法进行物理吸附试 验, 预处理过程为 160°C抽真空 10h, 其他不变。 所得结果为, 上述未经焙 烧的分子筛原粉中, 微孔孔容均为 0 cm3 g_ 与焙烧过的样品比, 介孔总孔 容降至原来的 30~50%。
Claims
1、 一种 Beta分子筛的制备方法, 其特征在于, 将由硅源、 铝源、 聚季铵 盐?、 水和碱源制成的初始凝胶混合物, 在 180~220°C水热条件下晶化制备 Beta分子筛; 其中, 聚季铵盐 P作为结构导向剂。
2、 根据权利要求 1所述的方法, 其特征在于, 所述聚季铵盐 P选自聚季 铵盐 -6、 聚季铵盐 -7、 聚季铵盐 -10、 聚季铵盐 -22、 聚季铵盐 -32、 聚季铵盐 -37、 聚季铵盐 -39、 聚季铵盐 -44中的任意一种或几种。
3、 根据权利要求 1所述的方法, 其特征在于, 所述铝源选自有机铝源和 /或无机铝源; 所述硅源选自有机硅源和 /或无机硅源; 所述碱源选自有机碱 和 /无机碱。
4、根据权利要求 3所述的方法,其特征在于,所述有机铝源为异丙醇铝; 所述无机铝源选自氧化铝、 氢氧化铝、 氯化铝、 硫酸铝、 硝酸铝、 铝酸钠 中的任意一种或任意几种;所述有机硅源选自正硅酸甲酯和 /或正硅酸乙酯; 所述无机硅源选自硅溶胶、 硅凝胶、 白炭黑、 水玻璃中的任意一种或任意 几种; 所述有机碱选自有机胺和 /或有机醇的碱金属盐; 所述无机碱选自碱 金属和 /或碱土金属的氢氧化物、氧化物、碳酸盐中的任意一种或任意几种。
5、 按照权利要求 1-4所述的任一方法, 其特征在于, 合成步骤如下: a)将硅源、 铝源、 氢氧化钠和 /或氢氧化钾、 聚季铵盐 P和水混合, 形成 具有如下配比的初始凝胶混合物:
A1203: Si02摩尔比 = 0.005~0.5
Na20和 /或 K20: Si02摩尔比 =0.10-0.5
H20: Si02摩尔比 =7~100
P: Si02质量比 =0.1~3;
b) 将所述步骤 a) 得到的初始凝胶混合装入不锈钢反应釜中, 密闭, 然 后加热到 180~220°C, 晶化不少于 12小时;
c) 待晶化完成后, 固体产物经分离、 干燥, 即得所述 Beta分子筛。
6、 根据权利要求 5所述的方法, 其特征在于, 所述步骤 a) 中的聚季铵 盐 P与 Si02质量比为 P: SiO2 =0.1~1.5。
7、 根据权利要求 5所述的方法, 其特征在于, 所述步骤 a) 中的聚季铵 盐 P与 Si02质量比为 P: SiO2 =0.1~0.8。
8、 根据权利要求 5所述的方法, 其特征在于, 所述步骤 b) 中晶化温度 为 180~200 °C, 晶化时间为 12~216小时。
9、 根据权利要求 5所述的方法, 其特征在于, 所述步骤 b) 中晶化方式 可以为静态晶化, 也可以为动态晶化。
10、 根据权利要求 5所述的方法, 其特征在于, 所述步骤 c)干燥后, 经 过焙烧,得到含有孔径为 2~13 nm介孔的具有多级孔道结构的 Beta分子筛; 一个优选的技术方案为, 所述步骤 c)干燥后, 经过焙烧, 得到含有孔径为 3-10 nm介孔的具有多级孔道结构的 Beta分子筛。
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