WO2013176227A1 - シリコアルミノリン酸塩、その製造方法及びそれを含む固体酸触媒 - Google Patents
シリコアルミノリン酸塩、その製造方法及びそれを含む固体酸触媒 Download PDFInfo
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- WO2013176227A1 WO2013176227A1 PCT/JP2013/064392 JP2013064392W WO2013176227A1 WO 2013176227 A1 WO2013176227 A1 WO 2013176227A1 JP 2013064392 W JP2013064392 W JP 2013064392W WO 2013176227 A1 WO2013176227 A1 WO 2013176227A1
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- Prior art keywords
- silicoaluminophosphate
- ratio
- solid acid
- reaction mixture
- peak
- Prior art date
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- 239000011973 solid acid Substances 0.000 title claims description 46
- 239000003054 catalyst Substances 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000000634 powder X-ray diffraction Methods 0.000 claims abstract description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 80
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 69
- 239000013078 crystal Substances 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 239000000203 mixture Substances 0.000 claims description 46
- 239000011541 reaction mixture Substances 0.000 claims description 41
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- 239000010703 silicon Substances 0.000 claims description 17
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 15
- 239000011574 phosphorus Substances 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 150000003863 ammonium salts Chemical class 0.000 claims description 4
- 150000003973 alkyl amines Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 35
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 30
- 238000002441 X-ray diffraction Methods 0.000 description 24
- 238000009616 inductively coupled plasma Methods 0.000 description 24
- 239000003153 chemical reaction reagent Substances 0.000 description 22
- 239000002245 particle Substances 0.000 description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 16
- 239000001257 hydrogen Substances 0.000 description 16
- 229910052739 hydrogen Inorganic materials 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 235000011007 phosphoric acid Nutrition 0.000 description 15
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 14
- 239000008119 colloidal silica Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 14
- 238000002425 crystallisation Methods 0.000 description 14
- 230000008025 crystallization Effects 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 13
- ZZBAGJPKGRJIJH-UHFFFAOYSA-N 7h-purine-2-carbaldehyde Chemical compound O=CC1=NC=C2NC=NC2=N1 ZZBAGJPKGRJIJH-UHFFFAOYSA-N 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 229910001220 stainless steel Inorganic materials 0.000 description 12
- 239000010935 stainless steel Substances 0.000 description 12
- 230000005855 radiation Effects 0.000 description 8
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 4
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 4
- 238000001238 wet grinding Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 150000003512 tertiary amines Chemical class 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- QCOGKXLOEWLIDC-UHFFFAOYSA-N N-methylbutylamine Chemical compound CCCCNC QCOGKXLOEWLIDC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 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 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- NOAAMORLQWOAEL-UHFFFAOYSA-N ethoxy-n,n-di(propan-2-yl)phosphonamidous acid Chemical compound CCOP(O)N(C(C)C)C(C)C NOAAMORLQWOAEL-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PQZTVWVYCLIIJY-UHFFFAOYSA-N diethyl(propyl)amine Chemical compound CCCN(CC)CC PQZTVWVYCLIIJY-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- ULWOJODHECIZAU-UHFFFAOYSA-N n,n-diethylpropan-2-amine Chemical compound CCN(CC)C(C)C ULWOJODHECIZAU-UHFFFAOYSA-N 0.000 description 1
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 1
- XWCCTMBMQUCLSI-UHFFFAOYSA-N n-ethyl-n-propylpropan-1-amine Chemical compound CCCN(CC)CCC XWCCTMBMQUCLSI-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- -1 pyrophosphoric acid Chemical compound 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- 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
- C01B37/06—Aluminophosphates containing other elements, e.g. metals, boron
- C01B37/08—Silicoaluminophosphates [SAPO compounds], e.g. CoSAPO
-
- 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
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates [SAPO compounds]
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- 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
- C01B39/54—Phosphates, e.g. APO or SAPO compounds
-
- 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
- B01J29/80—Mixtures of different zeolites
-
- 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
- C01B39/023—Preparation of physical mixtures or intergrowth products of zeolites chosen from group C01B39/04 or two or more of groups C01B39/14 - C01B39/48
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- 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
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Definitions
- the present invention relates to a novel silicoaluminophosphate, a method for producing the same, and a solid acid catalyst containing the same. More specifically, the present invention relates to a novel silicoaluminophosphate having high water resistance, which has a small decrease in the amount of solid acid even when exposed to an atmosphere containing moisture, a method for producing the same, and a solid acid catalyst including the same.
- silicoaluminophosphate having a crystal structure different from SAPO-34 has been proposed as a solid acid catalyst for synthesizing olefins from alcohols (see, for example, Patent Document 2).
- These crystalline silicoaluminophosphates have the composition (expressed as (Si x Al y P z ) O 2 , x: 0.01 to 0.05, y, z: 0.4 to 0.6). Characterized by powder X-ray diffraction pattern.
- silicoaluminophosphates related to these have also been proposed (see, for example, Patent Document 3).
- silicoaluminophosphates are further characterized by different compositions (0.01-0.25 expressed in SiO 2 / Al 2 O 3 molar ratio) and powder X-ray diffraction patterns.
- all of these silicoaluminophosphates contained very small amounts of Si.
- Silicoaluminophosphate with a small amount of Si has a problem that the amount of solid acid contained is small, and the catalytic activity when used for a solid acid catalyst or the like is small.
- An object of the present invention is to provide a novel crystalline silicoaluminophosphate having a high water resistance and a low water content even when stored and used in an atmosphere containing water in an active state as a solid acid catalyst, and a method for producing the same And a solid acid catalyst including the same.
- the present inventors have intensively studied.
- the silicoaluminophosphate represented by the following general formula (1) and having the powder X-ray diffraction (hereinafter referred to as “XRD”) pattern shown in Table 1 has extremely high water resistance.
- XRD powder X-ray diffraction
- the gist of the present invention is as follows.
- Silicoaluminophosphate represented by the following general formula (1) and having a powder X-ray diffraction pattern shown in Table 1.
- the silicoaluminophosphate of the present invention has a high water resistance with little decrease in the amount of solid acid even when stored and used in an atmosphere containing moisture vapor in an active state as a solid acid catalyst.
- FIG. 1 is a diagram showing an XRD pattern of silicoaluminophosphate obtained in Example 1.
- the silicoaluminophosphate of the present invention has a Si mole fraction in the range of 0.05 ⁇ x ⁇ 0.15, that is, the Si content in the general formula (1).
- the solid acid amount of silicoaluminophosphate depends on its Si content. When the molar fraction x of Si is 0.05 or less, the amount of solid acid is small. For example, when such a silicoaluminophosphate is used as a solid acid catalyst, its catalytic function becomes insufficient.
- the range of the molar fraction of Si is 0.05 ⁇ x ⁇ 0.15, preferably 0.05 ⁇ x ⁇ 0.13, and more preferably 0.05 ⁇ x ⁇ 0.10. Furthermore, 0.07 ⁇ x ⁇ 0.15, more preferably 0.07 ⁇ x ⁇ 0.13, and even more preferably 0.07 ⁇ x ⁇ 0.10. Since the silicoaluminophosphate of the present invention has the above-mentioned mole fraction of Si, the Si content is, for example, the Si content of the silicoaluminophosphate of US Pat. No. 6,334,994 (Patent Document 2). Bigger than.
- the molar fraction of P is 0.40 ⁇ z ⁇ 0.46. If z is less than 0.40, the water resistance tends to be low. On the other hand, when z exceeds 0.46, a silicoaluminophosphate having a high water resistance but a small amount of solid acid is obtained. Thereby, when using such a silicoaluminophosphate as a solid acid catalyst, the catalyst function may become inadequate.
- the silicoaluminophosphate of the present invention has the XRD pattern shown in Table 1 in the hydrogen state in which the organic mineralizer is removed, that is, the XRD peak (hereinafter referred to as the XRD peak shown in the XRD pattern of Table 1 above). It is preferable to have all of them.
- the “hydrogen state” is a state in which the cation at the ion exchange site of the silicoaluminophosphate is substantially only proton (H + ).
- the broad peak is an XRD peak having a half width of 0.3 ° or more.
- the diffraction angle 2 ⁇ is a value in an XRD pattern when copper K ⁇ is used as a radiation source.
- the silicoaluminoline of the present invention is also compared with the silicoaluminophosphate molecular sieve described in Japanese Patent No. 4299002 (Patent Document 3) reported as another special silicoaluminophosphate.
- the silicoaluminophosphate of the present invention has a completely different structure from the silicoaluminophosphate molecular sieve described in Japanese Patent No. 4299002.
- the average particle size of the silicoaluminophosphate crystals of the present invention is preferably 0.5 to 10 ⁇ m, more preferably 1 to 5 ⁇ m.
- the “average crystal grain size” of the present invention is a value observed with a scanning electron microscope (hereinafter referred to as “SEM”), and is the smallest independent particle that can be observed with an SEM, a so-called primary particle.
- the average value of diameters. Therefore, the average particle diameter of the crystals is different from the average particle diameter of the secondary particles formed by aggregation of the primary particles, so-called aggregate particle diameter.
- the average grain size of the crystal for example, a value obtained by measuring and averaging the grain sizes of arbitrary 100 or more crystals can be used. If the average particle size is 0.5 ⁇ m or more, the heat resistance tends to be high.
- the silicoaluminophosphate of the present invention preferably has a solid acid amount of 0.5 mmol / g or more, more preferably 0.6 mmol / g or more, and further preferably 0.7 mmol / g or more. preferable.
- the amount of solid acid is quantified by a general NH 3 -TPD method.
- the solid acid amount of the silicoaluminophosphate of the present invention tends to be in the range of 0.5 to 1.4 mmol / g based on its Si content.
- the silicoaluminophosphate of the present invention has high water resistance. Therefore, even if it is stored in a moisture-containing environment, the amount of solid acid before and after the storage is reduced little. For example, even if the silicoaluminophosphate of the present invention is stored in saturated steam at 80 ° C.
- the silicoaluminophosphate after storage with respect to the solid acid amount of the silicoaluminophosphate before storage The ratio of the solid acid amount (hereinafter referred to as “solid acid retention rate”) is at least 50%, more preferably at least 60%, and even more preferably at least 63%. The higher the solid acid retention rate, the higher the water resistance.
- the silicoaluminophosphate of the present invention has a CHA structure and AEI structure intergrowth ratio (Intergrowth ratio; hereinafter) in the ratio of AEI and CHA when the crystal is conveniently assumed to be a stack of CHA structure and AEI structure. It is preferably a crystal having a CHA / AEI ratio of 50/50 to 30/70.
- the intergrowth ratio can include, for example, 50/50, 45/55, 40/60, 35/65, and 30/70 as the CHA / AEI ratio.
- the CHA / AEI ratio is more than 30/70, the amount of solid acid tends to decrease.
- the CHA / AEI ratio is more CHA than 50/50, the water resistance of the silicoaluminophosphate is lowered.
- the silicoaluminophosphate of the present invention is a reaction mixture having the following molar composition ratio when a silicon source, a phosphorus source, an aluminum source, water, and an organic mineralizer are mixed and expressed as an oxide molar ratio. And the reaction mixture is maintained at a temperature exceeding 160 ° C. and not exceeding 220 ° C. for not less than 5 hours and not more than 100 hours.
- the silicon source used for production of the silicoaluminophosphate of the present invention is not particularly limited.
- the silicon source include water-soluble or water-dispersed silicon sources such as colloidal silica, silica sol, and water glass, amorphous silicon, fumed silica, solid silicon sources such as sodium silicate, and organic silicon such as ethyl orthosilicate. Sources can be used.
- the phosphorus source used for the production of the silicoaluminophosphate of the present invention is not particularly limited.
- a water-soluble phosphorus source such as orthophosphoric acid and phosphorous acid, a condensed phosphoric acid such as pyrophosphoric acid, and a solid phosphorus source such as calcium phosphate
- the aluminum source used for the production of the silicoaluminophosphate of the present invention is not particularly limited.
- an aluminum source for example, aluminum sulfate solution, sodium aluminate solution, aluminum source such as alumina sol, which is water-soluble or dispersed in water, such as amorphous alumina, pseudoboehmite, boehmite, aluminum hydroxide, aluminum sulfate, sodium aluminate, etc.
- An aluminum source such as an organoaluminum source such as aluminum isopropoxide can be used.
- the organic mineralizer used for production of the silicoaluminophosphate of the present invention is not particularly limited.
- the organic mineralizer for example, tertiary amine, and at least one tertiary amine selected from the group of triethylamine, methyldiethylamine, diethylpropylamine, ethyldipropylamine, and diethylisopropylamine can be used.
- a preferred organic mineralizer is triethylamine.
- triethylamine and a tertiary amine other than triethylamine or an organic mineralizer used for the synthesis of other silicoaluminophosphates may be mixed and used.
- organic mineralizers used for the synthesis of other silicoaluminophosphates include, for example, one or more alkylamines and ammonium salts thereof, tetraethylammonium salt, diethylamine, methylbutylamine, morpholine, Mention may be made of at least one selected from the group of cyclohexylamine and propylamine or an ammonium salt thereof.
- the order of adding these silicon source, phosphorus source, aluminum source, water, and organic mineralizer is not particularly limited. Therefore, the reaction mixture may be prepared by adding each of them individually or by simultaneously mixing two or more raw materials. Furthermore, amorphous aluminophosphate gel can be used in advance as a phosphorus source and an aluminum source, and amorphous silicoaluminophosphate gel can be used as a silicon source, an aluminum source, and a phosphorus source.
- a reaction mixture can be prepared by preparing a mixture containing two or more raw materials in advance and adding and mixing water and an organic mineralizer, and if necessary, a silicon source, a phosphorus source and an aluminum source.
- the pH of the reaction mixture may be adjusted using an acid such as hydrochloric acid, sulfuric acid or hydrofluoric acid, or an alkali such as sodium hydroxide, potassium hydroxide or ammonium hydroxide.
- the phosphorus source and the aluminum source are mixed so that the P 2 O 5 / Al 2 O 3 molar ratio is 0.7 to 1.5 in terms of oxide.
- the P 2 O 5 / Al 2 O 3 molar ratio is 0.7 or more, the yield is difficult to decrease, which is economical.
- the P 2 O 5 / Al 2 O 3 molar ratio is 1.5 or less, the crystallization rate does not decrease and a long time is not required for crystallization.
- a preferred P 2 O 5 / Al 2 O 3 molar ratio is 0.8 to 1.2.
- the silicon source and the aluminum source are mixed so that the SiO 2 / Al 2 O 3 molar ratio is 0.1 to 1.2 in terms of oxide.
- the SiO 2 / Al 2 O 3 molar ratio is 0.1 or more, the Si content in the produced silicoaluminophosphate is unlikely to decrease. Thereby, it becomes difficult to run out of solid acid amount.
- the SiO 2 / Al 2 O 3 molar ratio is 1.2 or less, the crystallization rate is difficult to decrease, so that a long time is not required for crystallization.
- a preferred SiO 2 / Al 2 O 3 molar ratio is 0.2 to 0.8.
- Water and an aluminum source are mixed so that the H 2 O / Al 2 O 3 molar ratio is 5 to 100 in terms of oxide.
- H 2 O / Al 2 O 3 molar ratio is preferred because it affects the yield of the product.
- the preferred H 2 O / Al 2 O 3 molar ratio is 10-100, more preferably 15-50.
- the organic mineralizer (R) and the aluminum source are mixed so that the R / Al 2 O 3 molar ratio is 0.5 to 5 in terms of oxide.
- the organic mineralizer plays an important role in forming the crystal structure of the silicoaluminophosphate of the present invention. Therefore, a larger R / Al 2 O 3 molar ratio is preferable. If the R / Al 2 O 3 molar ratio is less than 0.5, the silicoaluminophosphate of the present invention cannot be obtained. On the other hand, even if an organic mineralizer is added in an amount having an R / Al 2 O 3 molar ratio greater than 5, the effect on the structure forming effect is small.
- the preferred R / Al 2 O 3 molar ratio is 1-3.
- 0.05 to 10% by weight of the silicoaluminophosphate of the present invention as a seed crystal may be added to the reaction mixture.
- the amount of seed crystals added here is% by weight relative to the total weight when the amounts of silicon source, phosphorus source, and aluminum source in the reaction mixture are converted as oxides (SiO 2 , P 2 O 5 , Al 2 O 3 ). It is.
- the seed crystal addition amount is less than 0.05% by weight, the effects of shortening the crystallization time and making the crystal diameter uniform may be insufficient.
- the upper limit of the addition amount is not particularly limited, but if the amount exceeds 10% by weight, the effect of seed crystal addition can be sufficiently obtained. Therefore, a preferable seed crystal addition amount is 0.05 to 10% by weight, and more preferably 0.1 to 5% by weight.
- the silicoaluminophosphate of the present invention can be produced by placing the reaction mixture prepared as described above in a sealed pressure vessel and maintaining it at a temperature exceeding 160 ° C. and not exceeding 220 ° C. for 5 hours to 100 hours. it can. In order to make the composition and crystal diameter of the product uniform, stirring is preferably performed during heating. If the crystallization temperature is too low, it takes a long time for crystallization. On the other hand, when the crystallization temperature is high, crystallization can be performed in a short time. A preferred crystallization temperature is 170 to 200 ° C.
- the silicoaluminophosphate of the present invention crystallized in this manner is separated from the crystallization mother liquor by a conventional solid-liquid separation method such as filtration, decantation, and centrifugation, and is washed with water as necessary. It is recovered by drying by the method.
- the dried silicoaluminophosphate recovered in this manner contains the organic mineralizer used for crystallization in the pores.
- the organic mineralizer contained therein may be calcinated and removed.
- the organic mineralizer can be removed by baking at a temperature of 400 to 800 ° C. in an oxygen-containing atmosphere. At this time, if firing is performed in an atmosphere having a high oxygen concentration, the organic mineralizer burns violently.
- the structure of the silicoaluminophosphate may be destroyed, or the temperature change of the firing furnace may become large.
- the silicoaluminophosphate obtained as described above may contain metal cations in the raw material such as alkali metals and alkaline earth metals at the ion exchange site. Therefore, if necessary, a metal cation can be removed by acid washing or ion exchange, or a desired metal cation can be contained.
- the sample was heated to 700 ° C. at a temperature increase rate of 10 ° C./min while contacting with helium gas at a flow rate of 60 ml / min.
- the ammonia concentration in the gas flowing through the sample was continuously quantitatively analyzed by a gas chromatograph equipped with a thermal conductivity detector (TCD), and the solid acid characteristics were evaluated from the desorption spectrum of ammonia.
- the amount of the solid acid is determined by determining the amount of solid acid per weight of the crystalline silicoaluminophosphate based on the ratio of the amount of ammonia desorbed and the sample weight forming a desorption peak having a peak at 300 ° C. or higher in the desorption spectrum of ammonia. mmol / g) was calculated.
- Example 1 1690 g of water, 559 g of 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent), 284 g of 30% colloidal silica (Nissan Chemical: ST-N30), 744 g of triethylamine (Kishida Chemical: special grade reagent), 77% pseudoboehmite (Sasol: Pural SB) ) 322 g was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in a 4000 mL stainless steel sealed pressure resistant container and held at 180 ° C. for 69 hours while stirring at 270 rpm to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then baked at 600 ° C. for 2 hours to obtain a hydrogen type.
- the surface spacing of the hydrogenated silicoaluminophosphate was measured using a powder X-ray diffractometer (Mac Science: MPX3) using copper K ⁇ rays as a radiation source.
- FIG. 2 shows the XRD pattern. Further, the interplanar spacing value (d value) of the peak position of the XRD pattern and the relative intensity of the peak are shown in Table 2 (the table describes only diffraction peaks having a relative intensity of 2% or more).
- Example 2 4.6 g of water, 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent) 15.4 g, 30% colloidal silica (Nissan Chemical: ST-N30) 7.8 g, triethylamine (Kishida Chemical: special grade reagent) 20.3 g, 77 8.9 g of% pseudo boehmite (Sasol: Pural SB) was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 180 ° C. for 62 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of the silicoaluminophosphate of Example 1.
- the relative peak intensity ratio was 20.9%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.07 Al 0.49 P 0.44 ) O 2
- the dried product was observed by SEM, and the average particle size of arbitrary 150 crystals was 3.4 ⁇ m.
- the obtained silicoaluminophosphate had a continuous crystal ratio of 40/60 in CHA / AEI ratio.
- Example 3 1698 g of water, 559 g of 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent), 284 g of 30% colloidal silica (Nissan Chemical: ST-N30), 736 g of triethylamine (Kishida Chemical: special grade reagent), 77% pseudoboehmite (Sasol: Pural SB) ) 322 g, 4.2 g of seed crystals obtained by wet milling the crystalline silicoaluminophosphate obtained in Example 1 with a ball mill for 1 hour were mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in a 4000 mL stainless steel sealed pressure resistant container and kept at 180 ° C. for 64 hours with stirring at 270 rpm to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of the silicoaluminophosphate of Example 1.
- the relative peak intensity ratio was 22.0%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.08 Al 0.50 P 0.42 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 1.2 ⁇ m. A SEM photograph at a magnification of 5000 is shown in FIG.
- the resulting silicoaluminophosphate had a intergrowth ratio of 35/65 in CHA / AEI ratio.
- Example 4 Water 28.8g, 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent) 9.5g, 30% colloidal silica (Nissan Chemical: ST-N30) 4.8g, Triethylamine (Kishida Chemical: special grade reagent) 8.3g, 77 % Pseudo boehmite (Sasol: Pural SB) 5.5 g, 0.09 g of a seed crystal obtained by wet milling the crystalline silicoaluminophosphate obtained in Example 1 for 1 hour with a ball mill, and a reaction mixture having the following composition: Was prepared.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 180 ° C. for 63 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the XRD pattern obtained by using an XRD apparatus (Mac Science: MPX3) with silicon-type silicoaluminophosphate as a source of copper K ⁇ radiation, the interplanar spacing value (d value) and the relative intensity of the peak Asked.
- the results are shown in Table 5 (only the diffraction peak having a relative intensity of 2% or more is shown in the table).
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of Example 1.
- the relative peak intensity ratio was 28.2%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.08 Al 0.50 P 0.42 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 1.0 ⁇ m.
- the obtained silicoaluminophosphate had a continuous crystal ratio of 30/70 in terms of CHA / AEI ratio.
- Example 5 Water 29.4g, 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent) 9.0g, 30% colloidal silica (Nissan Chemical: ST-N30) 1.5g, triethylamine (Kishida Chemical: special grade reagent) 11.9g, 77 % Pseudo boehmite (Sasol: Pural SB) (5.2 g) and 0.07 g of seed crystals obtained by wet-grinding the crystalline silicoaluminophosphate obtained in Example 1 for 1 hour with a ball mill were mixed, and a reaction mixture having the following composition: Was prepared.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 180 ° C. for 62 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of Example 1.
- the relative peak intensity ratio was 6.5%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.06 Al 0.50 P 0.44 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 2.7 ⁇ m.
- the resulting silicoaluminophosphate had a intergrowth ratio of 45/55 in CHA / AEI ratio.
- Example 6 24.4 g of water, 8.7 g of 85% phosphoric acid aqueous solution (Kishida Chemical: Special Grade Reagent), 7.4 g of 30% colloidal silica (Nissan Chemical: ST-N30), 11.5 g of Triethylamine (Kishida Chemical: Special Grade Reagent), 77 % Pseudo boehmite (Sasol: Pural SB) 5.0 g, 0.09 g of seed crystals obtained by wet milling the silicoaluminophosphate obtained in Example 1 with a ball mill for 1 hour are mixed to prepare a reaction mixture having the following composition: did.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 180 ° C. for 63 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of Example 1. (The table describes only diffraction with a relative intensity of 2% or more.) The relative peak intensity ratio was 7.6%.
- ICP inductively coupled plasma emission spectrometer
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.10 Al 0.49 P 0.41 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 1.4 ⁇ m.
- the resulting silicoaluminophosphate had a intergrowth ratio of 45/55 in CHA / AEI ratio.
- Example 7 26.9 g of water, 8.9 g of 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent), 4.5 g of 30% colloidal silica (Nissan Chemical: ST-N30), 11.7 g of triethylamine (Kishida Chemical: special grade reagent), 77 % Pseudo boehmite (Sasol: Pural SB) (5.1 g) was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 200 ° C. for 62 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the characteristics of the silicoaluminophosphate of the present invention were the same as those of Example 1.
- the relative peak intensity ratio was 23.0%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.09 Al 0.49 P 0.42 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 3.4 ⁇ m.
- the obtained silicoaluminophosphate had a continuous crystal ratio of 30/70 in terms of CHA / AEI ratio.
- Comparative Example 1 26.9 g of water, 8.9 g of 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent), 4.5 g of 30% colloidal silica (Nissan Chemical: ST-N30), 11.7 g of triethylamine (Kishida Chemical: special grade reagent), 77 % Pseudo boehmite (Sasol: Pural SB) (5.1 g) was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 160 ° C. for 92 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this comparative example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the silicoaluminophosphate of the present invention had a very small broad peak with an interplanar spacing of 5.23 mm, and the relative peak intensity ratio was 4.8%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.09 Al 0.53 P 0.38 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 6.5 ⁇ m.
- the resulting silicoaluminophosphate had a intergrowth ratio of 55/45 in CHA / AEI ratio.
- Comparative Example 2 244 g of water, 279 g of 85% phosphoric acid aqueous solution (Kishida Chemical: Special Grade Reagent), 135 g of 30% colloidal silica (Nissan Chemical: ST-N30), 1159 g of 35% tetraethylammonium hydroxide (Alfa Acer), 77% pseudoboehmite (Sasol: Pural SB) 183 g was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was put into a 4000 mL stainless steel sealed pressure resistant container and kept at 200 ° C. for 92 hours while stirring at 270 rpm to obtain a silicoaluminophosphate of this comparative example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- the XRD pattern of this comparative example was characterized by the lattice spacing-relative strength of SAPO-34. For this reason, it did not have any peak of the inter-surface distance of 6.60 mm, the inter-surface distance of 5.24 mm, and the inter-surface distance of 4.17 mm, and the relative peak intensity ratio was 0%.
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.12 Al 0.49 P 0.39 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 0.8 ⁇ m.
- the obtained silicoaluminophosphate had a intergrowth ratio of 90/10 in CHA / AEI ratio.
- Comparative Example 3 7.6 g of water, 9.0 g of 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent) 9.0 g, 30% colloidal silica (Nissan Chemical: ST-N30) 2.3 g, 35% tetraethylammonium hydroxide (alpha-acer) 32.9 g Then, 5.2 g of 77% pseudo boehmite (Sasol: Pural SB) was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 200 ° C. for 88 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this comparative example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- SAPO-34 had a lattice spacing-relative strength characteristic. For this reason, it did not have any peak of the inter-surface distance of 6.60 mm, the inter-surface distance of 5.24 mm, and the inter-surface distance of 4.17 mm, and the relative peak intensity ratio was 0%.
- ICP inductively coupled plasma emission spectrometer
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.08 Al 0.51 P 0.40 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 0.6 ⁇ m.
- the obtained silicoaluminophosphate had a intergrowth ratio of 90/10 in CHA / AEI ratio.
- Comparative Example 4 30.8 g of water, 7.9 g of 85% aqueous phosphoric acid solution (Kishida Chemical: special grade reagent), 5.0 g of 30% colloidal silica (Nissan Chemical: ST-N30), 7.6 g of morpholine (Kishida Chemical: special grade reagent), A reaction mixture having the following composition was prepared by mixing 5.7 g of 77% pseudo boehmite (Sasol: Pural SB).
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 180 ° C. for 63 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this comparative example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- SAPO-34 had a lattice spacing-relative strength characteristic. For this reason, it did not have any peak of the inter-surface distance of 6.60 mm, the inter-surface distance of 5.24 mm, and the inter-surface distance of 4.17 mm, and the relative peak intensity ratio was 0%.
- ICP inductively coupled plasma emission spectrometer
- the composition of the dried silicoaluminophosphate was analyzed by an inductively coupled plasma emission spectrometer (ICP), it had the following composition in terms of oxide. (Si 0.12 Al 0.50 P 0.39 ) O 2
- the dried silicoaluminophosphate was observed by SEM, and the average particle size of arbitrary 150 crystals was 15 ⁇ m.
- the obtained silicoaluminophosphate had a continuous crystal ratio of 100/0 in terms of CHA / AEI ratio.
- Comparative Example 5 Water 64.3 g, 85% phosphoric acid aqueous solution (Kishida Chemical: special grade reagent) 18.3 g, 30% colloidal silica (Nissan Chemical: ST-N30) 6.9 g, N-ethyldiisopropylamine (Kishida Chemical: special grade reagent) 18 .8 g, 77% pseudoboehmite (Sasol: Pural SB) 11.7 g was mixed to prepare a reaction mixture having the following composition.
- This reaction mixture was placed in an 80 mL stainless steel sealed pressure vessel and kept at 160 ° C. for 91 hours while rotating at 55 rpm around the horizontal axis to obtain a silicoaluminophosphate of this comparative example.
- the obtained silicoaluminophosphate was filtered, washed with water, dried at 110 ° C. overnight, and then calcined at 600 ° C. for 2 hours to obtain a hydrogen type.
- SAPO-18 had a lattice spacing-relative strength characteristic. Further, it did not have a peak corresponding to a surface spacing of 3.82 mm, and a peak corresponding to a surface spacing of 5.24 mm was a sharp peak, and the relative peak intensity ratio was 172.3%.
- ICP inductively coupled plasma emission spectrometer
- the silicoaluminophosphate of the present invention has its XRD pattern and composition, so that the initial amount of solid acid is all increased to 0.5 mmol / g or more. Furthermore, it retains a solid acid content of at least 50% and even 60% or more after being stored in 80 ° C. saturated steam for 8 days, and has a higher acid content retention rate than SAPO-18 and SAPO-34. That is, it has high water resistance.
- the silicoaluminophosphate of the present invention has high water resistance as described above, it can be used as a solid acid catalyst or the like.
- Japanese Patent Application No. 2012-119091 filed on May 24, 2012
- Japanese Patent Application No. 2012-135093 filed on June 14, 2012
- No. 25 application filed on Dec. 25, 2012.
- the entire contents of the specification, claims, drawings, and abstract of Japanese Patent Application No. 2012-281684 are hereby incorporated herein by reference as the disclosure of the specification of the present invention.
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Abstract
Description
しかしながら、SAPO-34は水分を含む雰囲気に放置すると、その結晶性が経時的に低下する(例えば、非特許文献1参照)。
結晶性シリコアルミノリン酸塩は、水分を含む雰囲気に放置されると、その結晶性が経時的に低下する。これに加え、結晶性シリコアルミノリン酸塩は、水和による結晶性の低下とともに固体酸量が低下し、SAPO-34は大気と遮断された特別な保管管理を行わない限り、保管中に劣化するという問題を有する。
それらの結晶性シリコアルミノリン酸塩は、組成((SixAlyPz)O2で表して、x:0.01~0.05、y,z:0.4~0.6)と粉末X線回折パターンで特徴付けられている。さらにこれらに関連したシリコアルミノリン酸塩も提案されている(例えば、特許文献3参照)。それらのシリコアルミノリン酸塩は、さらに異なる組成(SiO2/Al2O3モル比で表して0.01~0.25)と粉末X線回折パターンで特徴付けられている。
しかしながら、これらのシリコアルミノリン酸塩は、いずれも非常に少ないSi量を含有したものであった。Si量の少ないシリコアルミノリン酸塩は、含有する固体酸量が少量であり、固体酸触媒等に使用する場合の触媒活性が小さいという問題点を有している。
(式中、xはSiのモル分率:0.05<x≦0.15、yはAlのモル分率:0.47≦y≦0.52、zはPのモル分率:0.40≦z≦0.46、x+y+z=1)
(式中、xはSiのモル分率:0.05<x≦0.15、yはAlのモル分率:0.47≦y≦0.52、zはPのモル分率:0.40≦z≦0.46、x+y+z=1)
(3) 結晶の固体酸量が0.5mmol/g以上である上記(1)または(2)に記載のシリコアルミノリン酸塩。
(4) CHA構造とAEI構造の連晶比(Intergrowth ratio)がCHA/AEI比で50/50~30/70の結晶を含んでなる上記(1)乃至(3)のいずれか一項に記載のシリコアルミノリン酸塩。
(5) 有機鉱化剤を除去した水素型の状態で、80℃飽和水蒸気中で8日間保存されたのちに、少なくとも50%の固体酸量を保持する上記(1)乃至(4)のいずれか一項に記載のシリコアルミノリン酸塩。
P2O5/Al2O3 0.7~1.5
SiO2/Al2O3 0.1~1.2
H2O/Al2O3 5~100
R/Al2O3 0.5~5
(Rは、有機鉱化剤を表す。)
を有する反応混合物を調製し、該反応混合物を160℃を超え220℃以下の温度に5時間以上100時間以下保持する上記(1)乃至(5)のいずれか一項に記載のシリコアルミノリン酸塩の製造方法。
(7) 有機鉱化剤がトリエチルアミン、または、トリエチルアミンと他のアルキルアミン類もしくはそのアンモニウム塩の混合物である上記(6)に記載のシリコアルミノリン酸塩の製造方法。
(8) 上記(1)乃至(5)のいずれか一項に記載のシリコアルミノリン酸塩を種晶として、反応混合物中のケイ素源、燐源、アルミニウム源の量を酸化物(SiO2、P2O5、Al2O3)として換算した時の総重量に対する割合として反応混合物に0.05~10重量%添加する上記(6)または(7)に記載のシリコアルミノリン酸塩の製造方法。
(9) 上記(1)乃至(5)のいずれか一項に記載のシリコアルミノリン酸塩を含む固体酸触媒。
本発明のシリコアルミノリン酸塩は、上記一般式(1)において、0.05<x≦0.15の範囲のSiのモル分率、すなわち、Si含有量を有する。シリコアルミノリン酸塩の固体酸量はそのSi含有量に依存する。Siのモル分率xが0.05以下では固体酸量が少なく、例えば、このようなシリコアルミノリン酸塩を固体酸触媒として用いる場合にその触媒機能が不十分となる。一方、xが0.15を超える場合には、本発明のシリコアルミノリン酸塩と同等の結晶性であっても耐水性が十分でない。そのため、このようなシリコアルミノリン酸塩は、水分を含む雰囲気中で保存することにより、その結晶性及び固体酸量の低下が生じる。
このXRDパターンにおいては、SAPO-34シリコアルミノリン酸塩のXRDパターンには存在しないXRDピーク、すなわち、面間隔6.60Å付近(回折角2θ=13.4°付近)、5.24Å付近(回折角2θ=16.9°付近)及び4.17Å付近(回折角2θ=21.3°付近)にブロードピークを有する。ここで、ブロードピークとは半値幅が0.3°以上となるXRDピークである。これに加え、本発明のシリコアルミノリン酸塩は、SAPO-34シリコアルミノリン酸塩が有しているXRDピーク、すなわち、面間隔4.96Å付近(回折角2θ=17.9°付近)のピーク及び3.54Å付近(回折角2θ=25.1°付近)のXRDピークを有さない、或いは顕著に小さい。
なお、本発明において、回折角2θは、線源に銅Kαを用いた場合のXRDパターンにおける値である。
米国特許第6334994号に記載の特殊なシリコアルミノリン酸塩のXRDパターンと比較すると、本発明のシリコアルミノリン酸塩は、米国特許第6334994号に示されているピークである、面間隔8.3~8.5Å(回折角2θ=10.6°付近)のピークを有さない。
本発明のシリコアルミノリン酸塩の結晶の平均粒径は、0.5~10μmであることが好ましく、1~5μmであることがより好ましい。
平均粒径が0.5μm以上の結晶であると、耐熱性が高くなりやすい。一方、10μm以下の結晶の平均粒径であれば、シリコアルミノリン酸塩の結晶内における物質の拡散速度が低下しにくくなる。そのため、例えば、本発明のシリコアルミノリン酸塩を固体酸触媒として使用する場合、反応速度が低下しにくくなり、副生成物の増加を抑制することができる。
本発明のシリコアルミノリン酸塩は、固体酸量が0.5mmol/g以上であることが好ましく、0.6mmol/g以上であることがより好ましく、0.7mmol/g以上であることが更に好ましい。
本発明のシリコアルミノリン酸塩は耐水性が高い。そのため、これを含水分環境下に保存しても、その保存前後の固体酸量の減少が少ない。例えば、本発明のシリコアルミノリン酸塩は、80℃の飽和水蒸気中、8日間保存されても、当該保存前のシリコアルミノリン酸塩の固体酸量に対する、保存後のシリコアルミノリン酸塩の固体酸量の割合(以下、「固体酸維持率」とする。)が少なくとも50%、更には少なくとも60%、また更には少なくとも63%の固体酸量である。固体酸維持率が高いほど、耐水性が高くなる。
CHA/AEI比が30/70よりもAEI過剰の場合には、固体酸量が少なくなりやすい。一方、CHA/AEI比が50/50よりもCHA過剰の場合には、シリコアルミノリン酸塩の耐水性が低下する。
本発明のシリコアルミノリン酸塩は、ケイ素源、燐源、アルミニウム源、水、及び有機鉱化剤を混合して、酸化物のモル比で示したとき、次のモル組成比を有する反応混合物を調製し、該反応混合物を160℃を超え220℃以下の温度に5時間以上100時間以下保持することにより製造することができる。
SiO2/Al2O3 0.1~1.2
H2O/Al2O3 5~100
R/Al2O3 0.5~5
(Rは、有機鉱化剤を表す。)
本発明のシリコアルミノリン酸塩の製造に用いる燐源は特に限定されない。燐源として、例えば正リン酸、亜リン酸など水溶性の燐源、例えばピロリン酸などの縮合リン酸、リン酸カルシウムなどの固体状の燐源が使用できる。
本発明のシリコアルミノリン酸塩の製造に用いるアルミニウム源は特に限定されない。アルミニウム源として、例えば硫酸アルミニウム溶液、アルミン酸ソーダ溶液、アルミナゾルなど水溶性または水に分散されたアルミニウム源、例えば無定形アルミナ、擬ベーマイト、ベーマイト、水酸化アルミニウム、硫酸アルミニウム、アルミン酸ナトリウムなど固体状アルミニウム源、例えばアルミニウムイソプロポキシドなどの有機アルミニウム源などが使用できる。
また、トリエチルアミンと、トリエチルアミン以外の3級アミン又は他のシリコアルミノリン酸塩の合成に使用される有機鉱化剤とを混合して使用してもよい。他のシリコアルミノリン酸塩の合成に使用される有機鉱化剤としては、例えば、アルキルアミン類及びそのアンモニウム塩のいずれか1種以上、更にはテトラエチルアンモニウム塩、ジエチルアミン、メチルブチルアミン、モルフォリン、シクロへキシルアミン及びプロピルアミンの群から選ばれる少なくとも1種又はそのアンモニウム塩を挙げることができる。
燐源とアルミニウム源は酸化物換算で、P2O5/Al2O3モル比が0.7~1.5となるよう混合する。P2O5/Al2O3モル比が0.7以上であると収量が低下しにくくなるため経済的になる。一方、P2O5/Al2O3モル比が1.5以下であれば結晶化速度が低下することがなく、結晶化に長時間を要さなくなる。好ましいP2O5/Al2O3モル比は0.8~1.2である。
水とアルミニウム源は酸化物換算で、H2O/Al2O3モル比が5~100となるよう混合する。この際、原料としてコロイダルシリカやリン酸などの水溶液を使用する際には水溶液中の水の量も考慮する必要がある。生成物の収量に影響するため、H2O/Al2O3モル比は小さい方が好ましい。H2O/Al2O3モル比が、5以上であれば反応混合物の粘度が高くならず、反応混合物が調製しやすくなる。好ましいH2O/Al2O3モル比は10~100、さらに好ましくは15~50である。
このようにして回収された乾燥状態のシリコアルミノリン酸塩は、細孔内に結晶化に使用した有機鉱化剤を含有している。固体酸触媒、あるいは触媒担体として使用するためには、含有する有機鉱化剤の焼成除去をおこなってもよい。有機鉱化剤は、含酸素雰囲気下で400~800℃の温度で焼成することにより除去することができる。この際、酸素濃度が高い雰囲気で焼成をおこなうと、有機鉱化剤が激しく燃焼する。これにより、シリコアルミノリン酸塩の構造が破壊されたり、焼成炉の温度変化が大きくなることがある。このような場合には、焼成初期は低酸素雰囲気あるいは無酸素雰囲気として有機鉱化剤の燃焼を抑制することが好ましい。
加圧成形後、粉砕して20~30メッシュに整粒した試料0.1gを固定床常圧流通式反応管に充填し、ヘリウム流通下500℃で1時間前処理し、100℃まで冷却した。次いで、試料を100℃に保持しながらアンモニア10体積%、ヘリウムバランスのガスを流速60ml/minで1時間接触させてアンモニアを吸着させたのち、ヘリウムガスを流速60ml/minで1時間接触させて、アンモニアガスをパージした。その後、ヘリウムガスを流速60ml/minで接触させながら試料を10℃/minの昇温速度で700℃まで昇温した。試料を流通したガス中のアンモニア濃度を熱伝導度検出器(TCD)を備えたガスクロマトグラフにより連続的に定量分析し、アンモニアの脱着スペクトルより固体酸特性を評価した。
固体酸量の定量は、アンモニアの脱着スペクトルの300℃以上に頂点を有する脱離ピークを形成するアンモニア脱離量と試料重量の比から結晶性シリコアルミノリン酸塩の重量当たりの固体酸量(mmol/g)を算出した。
結晶をCHA構造とAEI構造の積層であると便宜的に仮定した場合のAEIとCHAの比率は、国際ゼオライト学会より配布されているDIFFaXプログラム(v1.813)を用いたXRDシミュレーションパターンとの比較により決定した。
水1690g、85%リン酸水溶液(キシダ化学:特級試薬)559g、30%コロイダルシリカ(日産化学:ST-N30)284g、トリエチルアミン(キシダ化学:特級試薬)744g、77%擬ベーマイト(サソール:Pural SB)322gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=50
TEA/Al2O3=3
(TEAは、トリエチルアミンを表す。)
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成することにより、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とする粉末X線回折装置(マックサイエンス:MPX3)を用いて、その面間隔を測定した。図2にXRDパターンを示す。また、当該XRDパターンのピーク位置の面間隔値(d値)とそのピークの相対強度を表2に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.09Al0.49P0.42)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は4.3μmであった。
本実施例のシリコアルミノリン酸塩の連晶比は、CHA/AEI比で40/60であった。
水4.6g、85%リン酸水溶液(キシダ化学:特級試薬)15.4g、30%コロイダルシリカ(日産化学:ST-N30)7.8g、トリエチルアミン(キシダ化学:特級試薬)20.3g、77%擬ベーマイト(サソール:Pural SB)8.9gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=15
TEA/Al2O3=3
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とする粉末X線回折装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表3に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.07Al0.49P0.44)O2
乾燥後の生成物をSEMにより観察し、任意の150個の結晶の平均粒径は3.4μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で40/60であった。
水1698g、85%リン酸水溶液(キシダ化学:特級試薬)559g、30%コロイダルシリカ(日産化学:ST-N30)284g、トリエチルアミン(キシダ化学:特級試薬)736g、77%擬ベーマイト(サソール:Pural SB)322g、実施例1で得られた結晶性シリコアルミノリン酸塩をボールミルで1時間湿式粉砕した種晶4.2gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=50
TEA/Al2O3=3
種晶0.5重量%
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表4に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.08Al0.50P0.42)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は1.2μmであった。倍率5000倍のSEM写真を図1に示す。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で35/65であった。
水28.8g、85%リン酸水溶液(キシダ化学:特級試薬)9.5g、30%コロイダルシリカ(日産化学:ST-N30)4.8g、トリエチルアミン(キシダ化学:特級試薬)8.3g、77%擬ベーマイト(サソール:Pural SB)5.5g、実施例1で得られた結晶性シリコアルミノリン酸塩をボールミルで1時間湿式粉砕した種晶0.09gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=50
TEA/Al2O3=2
種晶0.6重量%
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めた。結果を表5に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.08Al0.50P0.42)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は1.0μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で30/70であった。
水29.4g、85%リン酸水溶液(キシダ化学:特級試薬)9.0g、30%コロイダルシリカ(日産化学:ST-N30)1.5g、トリエチルアミン(キシダ化学:特級試薬)11.9g、77%擬ベーマイト(サソール:Pural SB)5.2g、実施例1で得られた結晶性シリコアルミノリン酸塩をボールミルで1時間湿式粉砕した種晶0.07gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.2
H2O/Al2O3=50
TEA/Al2O3=3
種晶0.6重量%
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表6に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.06Al0.50P0.44)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は2.7μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で45/55であった。
水24.4g、85%リン酸水溶液(キシダ化学:特級試薬)8.7g、30%コロイダルシリカ(日産化学:ST-N30)7.4g、トリエチルアミン(キシダ化学:特級試薬)11.5g、77%擬ベーマイト(サソール:Pural SB)5.0g、実施例1で得られたシリコアルミノリン酸塩をボールミルで1時間湿式粉砕した種晶0.09gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=1.0
H2O/Al2O3=50
TEA/Al2O3=3
種晶0.6重量%
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表7に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.10Al0.49P0.41)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は1.4μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で45/55であった。
水26.9g、85%リン酸水溶液(キシダ化学:特級試薬)8.9g、30%コロイダルシリカ(日産化学:ST-N30)4.5g、トリエチルアミン(キシダ化学:特級試薬)11.7g、77%擬ベーマイト(サソール:Pural SB)5.1gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=50
TEA/Al2O3=3
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表8に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.09Al0.49P0.42)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は3.4μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で30/70であった。
水26.9g、85%リン酸水溶液(キシダ化学:特級試薬)8.9g、30%コロイダルシリカ(日産化学:ST-N30)4.5g、トリエチルアミン(キシダ化学:特級試薬)11.7g、77%擬ベーマイト(サソール:Pural SB)5.1gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.6
H2O/Al2O3=50
TEA/Al2O3=3
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得た粉末X回折パターンから、ピーク位置の面間隔値(d値)とそのピークの相対強度を求めて表9に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.09Al0.53P0.38)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は6.5μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で55/45であった。
水244g、85%リン酸水溶液(キシダ化学:特級試薬)279g、30%コロイダルシリカ(日産化学:ST-N30)135g、35%テトラエチルアンモニウムヒドロキサイド(アルファーエイサー)1159g、77%擬ベーマイト(サソール:Pural SB)183gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=0.88
SiO2/Al2O3=0.5
H2O/Al2O3=50
TEAOH/Al2O3=2
(TEAOHは、テトラエチルアンモニウムヒドロキサイドを表す。)
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の格子面間隔値(d値)とそのピークの相対強度を求めて表10に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.12Al0.49P0.39)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は0.8μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で90/10であった。
水7.6g、85%リン酸水溶液(キシダ化学:特級試薬)9.0g、30%コロイダルシリカ(日産化学:ST-N30)2.3g、35%テトラエチルアンモニウムヒドロキサイド(アルファーエイサー)32.9g、77%擬ベーマイト(サソール:Pural SB)5.2gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=1.0
SiO2/Al2O3=0.3
H2O/Al2O3=50
TEAOH/Al2O3=2
(TEAOHは、テトラエチルアンモニウムヒドロキサイドを表す。)
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の格子面間隔値(d値)とそのピークの相対強度を求めて表11に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.08Al0.51P0.40)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は0.6μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で90/10であった。
水30.8g、85%リン酸水溶液(キシダ化学:特級試薬)7.9g、30%コロイダルシリカ(日産化学:ST-N30)5.0g、モルフォリン(キシダ化学:特級試薬)7.6g、77%擬ベーマイト(サソール:Pural SB)5.7gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=0.8
SiO2/Al2O3=0.6
H2O/Al2O3=50
morpholine/Al2O3=2
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得た粉末X回折パターンから、ピーク位置の格子面間隔値(d値)とそのピークの相対強度を求めて表12に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.12Al0.50P0.39)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察し、任意の150個の結晶の平均粒径は15μmであった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で100/0であった。
水64.3g、85%リン酸水溶液(キシダ化学:特級試薬)18.3g、30%コロイダルシリカ(日産化学:ST-N30)6.9g、N-エチルジイソプロピルアミン(キシダ化学:特級試薬)18.8g、77%擬ベーマイト(サソール:Pural SB)11.7gを混合し、次の組成の反応混合物を調製した。
P2O5/Al2O3=0.9
SiO2/Al2O3=0.4
H2O/Al2O3=50
EDIPA/Al2O3=1.6
(EDIPAは、N-エチルジイソプロピルアミンを表す。)
得られたシリコアルミノリン酸塩をろ過、水洗後、110℃で一晩乾燥したのち、600℃で2時間焼成し、これを水素型とした。
水素型としたシリコアルミノリン酸塩を、銅Kα線を線源とするXRD装置(マックサイエンス:MPX3)により得たXRDパターンから、ピーク位置の格子面間隔値(d値)とそのピークの相対強度を求めて表13に示す(表は相対強度2%以上の回折ピークのみ記載)。
乾燥後のシリコアルミノリン酸塩を誘導結合プラズマ発光分析装置(ICP)により組成分析をおこなったところ、酸化物換算で下記の組成を有していた。
(Si0.10Al0.49P0.41)O2
乾燥後のシリコアルミノリン酸塩をSEMにより観察したところ、結晶形状が不揃い(柱状~平板状)のため正確な結晶の粒径は計測していないが、長辺方向で概ね1μm以下であった。
得られたシリコアルミノリン酸塩は、連晶比がCHA/AEI比で0/100であった。
実施例1~7、比較例1で合成したシリコアルミノリン酸塩、比較例2~4で合成したSAPO-34、及び比較例5で合成したSAPO-18を、それぞれ600℃で2時間焼成して有機鉱化剤を除去し、これらを水素型とした。水素型の試料0.5gをシャーレに広げ、80℃飽和水蒸気中で8日間保存した前後の固体酸量を比較した。また、2種類の市販のSAPO-34についても同様の耐水性評価をおこなった。結果をあわせて表14に示す。
なお、2012年5月24日に出願された日本特許出願2012-119091号、2012年6月14日に出願された日本特許出願2012-135093号、及び、2012年12月25日に出願された日本特許出願2012-281674号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (9)
- 結晶の平均粒径が0.5~10μmである請求項1に記載のシリコアルミノリン酸塩。
- 結晶の固体酸量が0.5mmol/g以上である請求項1または2に記載のシリコアルミノリン酸塩。
- CHA構造とAEI構造の連晶比(Intergrowth ratio)がCHA/AEI比で50/50~30/70の結晶を含んでなる請求項1乃至3のいずれか一項に記載のシリコアルミノリン酸塩。
- 有機鉱化剤を除去した水素型の状態で、80℃飽和水蒸気中で8日間保存されたのちに、少なくとも50%の固体酸量を保持する請求項1乃至4のいずれか一項に記載のシリコアルミノリン酸塩。
- ケイ素源、燐源、アルミニウム源、水、有機鉱化剤を混合して、酸化物のモル比で示したとき、次のモル組成比
P2O5/Al2O3 0.7~1.5
SiO2/Al2O3 0.1~1.2
H2O/Al2O3 5~100
R/Al2O3 0.5~5
(Rは、有機鉱化剤を表す。)
を有する反応混合物を調製し、該反応混合物を160℃を超え220℃以下の温度に5時間以上100時間以下保持する請求項1乃至5のいずれか一項に記載のシリコアルミノリン酸塩の製造方法。 - 有機鉱化剤がトリエチルアミン、または、トリエチルアミンと他のアルキルアミン類もしくはそのアンモニウム塩の混合物である請求項6に記載のシリコアルミノリン酸塩の製造方法。
- 請求項1乃至5のいずれか一項に記載のシリコアルミノリン酸塩を種晶として、反応混合物中のケイ素源、燐源、アルミニウム源の量を酸化物(SiO2、P2O5、Al2O3)として換算した時の総重量に対する割合として反応混合物に0.05~10重量%添加する請求項6または7に記載のシリコアルミノリン酸塩の製造方法。
- 請求項1乃至5のいずれか一項に記載のシリコアルミノリン酸塩を含む固体酸触媒。
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JP5565520B1 (ja) * | 2013-12-27 | 2014-08-06 | 東洋インキScホールディングス株式会社 | 太陽電池封止材用樹脂組成物、太陽電池封止材および太陽電池モジュール |
CN104744793A (zh) * | 2013-12-27 | 2015-07-01 | 东洋油墨Sc控股株式会社 | 太阳能电池密封材料用树脂组合物、太阳能电池密封材料以及太阳能电池模块 |
CN104744793B (zh) * | 2013-12-27 | 2018-10-02 | 东洋油墨Sc控股株式会社 | 太阳能电池密封材料用树脂组合物、太阳能电池密封材料以及太阳能电池模块 |
EP3222583A4 (en) * | 2014-11-21 | 2018-04-11 | Mitsubishi Chemical Corporation | Aei type zeolite, method for prodcuing same, and uses thereof |
US10357760B2 (en) | 2014-11-21 | 2019-07-23 | Mitsubishi Chemical Corporation | AEI type zeolite, method for producing same, and uses thereof |
US11084025B2 (en) | 2014-11-21 | 2021-08-10 | Mitsubishi Chemical Corporation | AEI type zeolite, method for producing same, and uses thereof |
CN111115655A (zh) * | 2018-10-30 | 2020-05-08 | 中国石油化工股份有限公司 | 共晶纳米分子筛、制备方法及其应用 |
Also Published As
Publication number | Publication date |
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EP2857356B1 (en) | 2022-11-09 |
KR20150024818A (ko) | 2015-03-09 |
JP2014141385A (ja) | 2014-08-07 |
CN104334497B (zh) | 2016-06-01 |
EP2857356A1 (en) | 2015-04-08 |
CN104334497A (zh) | 2015-02-04 |
US9637392B2 (en) | 2017-05-02 |
EP2857356A4 (en) | 2016-01-06 |
US20150151979A1 (en) | 2015-06-04 |
JP6171559B2 (ja) | 2017-08-02 |
KR101940851B1 (ko) | 2019-01-21 |
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