CN113117751B - Metal-organic framework composite material and preparation method thereof - Google Patents
Metal-organic framework composite material and preparation method thereof Download PDFInfo
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- CN113117751B CN113117751B CN201911418210.1A CN201911418210A CN113117751B CN 113117751 B CN113117751 B CN 113117751B CN 201911418210 A CN201911418210 A CN 201911418210A CN 113117751 B CN113117751 B CN 113117751B
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- 239000000463 material Substances 0.000 title claims abstract description 101
- 239000012924 metal-organic framework composite Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 54
- 239000002131 composite material Substances 0.000 claims abstract description 48
- 239000002808 molecular sieve Substances 0.000 claims abstract description 48
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000012621 metal-organic framework Substances 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000008367 deionised water Substances 0.000 claims abstract description 25
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 25
- 239000002243 precursor Substances 0.000 claims abstract description 22
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 150000001412 amines Chemical class 0.000 claims abstract description 18
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims abstract description 9
- 150000001879 copper Chemical class 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 26
- 239000011148 porous material Substances 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 11
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- SXTLQDJHRPXDSB-UHFFFAOYSA-N copper;dinitrate;trihydrate Chemical compound O.O.O.[Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O SXTLQDJHRPXDSB-UHFFFAOYSA-N 0.000 claims description 9
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 229920001451 polypropylene glycol Polymers 0.000 claims description 7
- KDSNLYIMUZNERS-UHFFFAOYSA-N 2-methylpropanamine Chemical compound CC(C)CN KDSNLYIMUZNERS-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- 238000005576 amination reaction Methods 0.000 claims description 3
- MPTQRFCYZCXJFQ-UHFFFAOYSA-L copper(II) chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Cu+2] MPTQRFCYZCXJFQ-UHFFFAOYSA-L 0.000 claims description 3
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000011946 reduction process Methods 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 239000013084 copper-based metal-organic framework Substances 0.000 abstract description 24
- 239000002253 acid Substances 0.000 abstract description 9
- 241000269350 Anura Species 0.000 abstract description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 24
- 229910021536 Zeolite Inorganic materials 0.000 description 21
- 239000010457 zeolite Substances 0.000 description 21
- 239000000203 mixture Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 16
- 239000004721 Polyphenylene oxide Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000013148 Cu-BTC MOF Substances 0.000 description 4
- 239000013177 MIL-101 Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000013384 organic framework Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000013147 Cu3(BTC)2 Substances 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 229910052786 argon Inorganic materials 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000007806 chemical reaction intermediate Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229920001795 coordination polymer Polymers 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007210 heterogeneous catalysis Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012229 microporous material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000696 nitrogen adsorption--desorption isotherm Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/1691—Coordination polymers, e.g. metal-organic frameworks [MOF]
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
- B01J31/2226—Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
- B01J31/223—At least two oxygen atoms present in one at least bidentate or bridging ligand
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
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- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/617—500-1000 m2/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/633—Pore volume less than 0.5 ml/g
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- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/635—0.5-1.0 ml/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/02—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/321—Polymers modified by chemical after-treatment with inorganic compounds
- C08G65/325—Polymers modified by chemical after-treatment with inorganic compounds containing nitrogen
- C08G65/3255—Ammonia
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/10—Complexes comprising metals of Group I (IA or IB) as the central metal
- B01J2531/16—Copper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterized by the type of post-polymerisation functionalisation
- C08G2650/04—End-capping
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- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a metal organic framework composite material and a preparation method thereof, wherein copper salt, trimesic acid, deionized water and amine substances are mixed according to a proportion to obtain a metal organic framework material prepolymer; mixing a silicon source, pseudo-boehmite, a phosphoric acid solution and deionized water in proportion to obtain a mesoporous molecular sieve precursor; and finally, placing the metal organic framework material prepolymer and the mesoporous molecular sieve precursor into a closed reactor, stirring at a certain temperature for reaction, and centrifugally separating, washing and drying to obtain the metal organic framework composite material. The composite material prepared by the invention forms an interpenetrating structure with the copper-based metal organic framework material through the SAPO mesoporous molecular sieve, enhances the framework strength of the material, and improves the total acid content.
Description
Technical Field
The invention belongs to the field of metal-organic framework materials, and particularly relates to a metal-organic framework composite material and a preparation method thereof.
Background
The metal organic framework material is an emerging porous material, and compared with the traditional porous materials (active carbon, alumina and molecular sieve), the metal organic framework material has larger specific surface area, adjustable pore diameter, pore volume and assembly mode, so that the metal organic framework material is interesting. Cu-based metal organic framework material Cu 3 (BTC) 2 Also known as HKUST-1, due to its relatively high specific surface area and pore volumeAnd a large number of unsaturated active sites, so that the method is widely applied to the technical fields of adsorption, separation, catalysis and the like. However, HKUST-1 is easily bound to water molecules, resulting in a decrease in the number of unsaturated active sites and the stability of the skeleton. In addition, HKUST-1 has weak acidity, especially limited active site of B acid center, which also restricts the large-scale application of the HKUST-1 in heterogeneous catalytic reactions (such as polyether amine synthesis).
CN105562059a discloses a molecular sieve using metal organic framework material as template and its preparation method. The zeolite raw powder is ground and crushed by a wet method until the average granularity is less than or equal to 0.3 mu m to obtain zeolite particles; dispersing zeolite particles in a solvent in the form of colloidal particles, thereby obtaining zeolite sol gel; mixing zeolite sol gel and metal organic framework material MIL-101, sealing the mixed solution under vacuum condition, drying and calcining after the reaction is finished to obtain the metal-doped zeolite molecular sieve. The metal or metal oxide remained after the roasting of the metal organic framework material as the template agent plays a role of a bracket, so that the strength of the molecular sieve is enhanced, and meanwhile, the molecular sieve has specific catalytic activity. However, in the roasting degradation process of the metal organic framework material, the organic ligand component generates macromolecular carbon deposition through polycondensation reaction, so that zeolite sol-gel pore channels are easy to be blocked, namely the specific surface area, the size of open pores and the number of the generated metal-doped zeolite molecular sieve are obviously reduced. In addition, the metal-organic framework material MIL-101 belongs to a coordination polymer with high added value, is only used as a template agent for roasting treatment, and is not beneficial to industrial popularization and use from the aspects of economy, specific surface area, pore volume and the like.
CN107597190a discloses a preparation method for assembling metal organic framework film on the surface of zeolite molecular sieve crystal grain and its application, the preparation method comprises the following steps: firstly, adding metal cobalt salt, aromatic carboxylic acid, molecular sieve and organic solvent into a container, fully mixing and stirring for reaction, and then purifying and vacuum drying to obtain a precursor of the zeolite molecular sieve grain surface assembled metal organic framework membrane material; then, the precursor is put into a closed device for steam-assisted crystallization reaction, and finally the product is taken for purification and drying treatment, thus obtaining the zeolite molecular sieve grain surface assembled metal organic framework membrane material. The metal organic framework material is only simply loaded on the surface of zeolite molecular sieve grains, and organic combination between the metal organic framework material and the zeolite molecular sieve grains is not realized, so that the metal organic framework material is easy to fall off after being used for many times, and the activity of the membrane material is reduced. In addition, although the water vapor assisted crystallization can accelerate the generation process of the membrane material, the framework structure is unstable and even collapses easily caused by most metal organic framework materials in the environment of water vapor existence, so that the physicochemical property of the metal organic framework material component in the zeolite molecular sieve crystal grain surface assembled metal organic framework membrane prepared by the method is extremely easy to be reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a metal-organic framework composite material and a preparation method thereof. The composite material prepared by the invention forms an interpenetrating structure with the copper-based metal organic framework material through the SAPO mesoporous molecular sieve, enhances the framework strength of the material, and improves the total acid content.
The preparation method of the metal-organic framework composite material provided by the invention comprises the following steps:
(1) Mixing copper salt, trimesic acid, deionized water and amine substances in proportion, and stirring at room temperature for reaction to obtain a metal organic framework material prepolymer;
(2) Mixing a silicon source, pseudo-boehmite, a phosphoric acid solution and deionized water in proportion, and stirring at a certain temperature for reaction to obtain a mesoporous molecular sieve precursor;
(3) And (3) placing the metal organic framework material prepolymer and the mesoporous molecular sieve precursor into a closed reactor, stirring at a certain temperature for reaction, and centrifugally separating, washing and drying to obtain the metal organic framework composite material.
In the step (1), the copper salt is at least one selected from copper nitrate trihydrate, copper sulfate pentahydrate, copper chloride dihydrate and the like, preferably copper nitrate trihydrate. The amine substance is selected from amino functional groups (-NH) 2 ) Primary amine substances at the end of the carbon chain, such as triethylamine, isobutylamine, polyetheramine D-230, etcAt least one, preferably polyetheramine D-230.
In the step (1), the mass ratio of the copper salt to the trimesic acid to the deionized water to the amine substances is 1: (0.1-1): (10-100): (0.01 to 0.1), preferably 1: (0.4-0.6): (30-50): (0.03-0.06). The stirring speed is 200 rpm-350 rpm, and the stirring time is 1 h-5 h.
In the step (2), the silicon source is at least one selected from silica sol, tetraethyl orthosilicate, silicon powder and the like, preferably silica sol. The mass concentration of the phosphoric acid solution is 85%. The mass ratio of the silicon source to the pseudo-boehmite to the phosphoric acid solution to the deionized water is 1: (0.8-3.9): (1-5): (10 to 30), preferably 1: (1.6-2.5): (1.9-3.3): (15-20). The reaction temperature is 140-160 ℃; the stirring speed is 400 rpm-600 rpm, and the stirring time is 1 h-4 h.
In the step (3), the mass ratio of the mesoporous molecular sieve precursor to the metal organic framework material prepolymer is 1: (1 to 10), preferably 1: (6-8). The closed reactor is at least one selected from enamel stirring reaction kettles, polytetrafluoroethylene stirring reaction kettles, nylon stirring reaction kettles and the like. The stirring temperature is 180-260 ℃, preferably 210-240 ℃. The stirring speed is 300rpm to 500rpm, and the stirring time is 10 hours to 50 hours, preferably 20 hours to 30 hours. Deionized water is adopted for washing, and repeated washing is carried out for a plurality of times. The drying temperature is 170-200 ℃ and the drying time is 10-15 h.
The metal-organic framework composite material is prepared by adopting the method. In the prepared composite material, the content of the mesoporous molecular sieve is 10-50% and the content of the metal organic framework material is 50-90% based on the total mass of the material. The specific surface area of the composite material is 800m 2 /g～900m 2 Per gram, total pore volume of 0.85cm 3 /g～1.09 cm 3 And/g, the average pore diameter is 6.5-8.3 nm, and the crushing strength is 1.5-2.5 MPa.
The application of the metal-organic framework composite material prepared by the invention can be used in the technical field of heterogeneous catalysis, improves the activity and selectivity of the metal-organic framework composite material in heterogeneous catalytic reaction, and is particularly suitable for synthesizing polyether amine with molecular weight less than 1000 by catalytic amination. Before use, the composite material prepared by the invention is reduced, and the reduction process is as follows: before testing, the catalyst is dried for 1-3 hours at 80-120 ℃, and then the catalyst is reduced for 1-3 hours at 200-220 ℃ under the condition of 50-70 mL/min hydrogen flow rate.
The composite material prepared by the invention is used for synthesizing polyether amine, 1 g-7 g of reduced catalyst, 200 g-400 g of polypropylene glycol and 15 g-40 g of liquid ammonia are taken, and the reaction is carried out for 0.5 h-4 h under the conditions of the reaction temperature of 140-200 ℃, the hydrogen partial pressure of 0.1-1 MPa and the total reaction pressure of 3-6 MPa, the raw material conversion rate is more than 95%, and the primary amine product selectivity is more than 98%.
Compared with the prior art, the invention has the following beneficial effects:
(1) Firstly, amine substances are introduced into a metal organic framework material prepolymer, and on one hand, the amine substances can effectively crosslink the mesoporous molecular sieve and the metal organic framework material prepolymer, so that the framework strength of the composite material is enhanced, and the pore structure is modified; on the other hand, the formation of single lamellar silicon-aluminum substances which are unfavorable for the stability of the composite material can be controlled through an induction effect, and the stability of the composite material can be enhanced.
(2) The mesoporous molecular sieve and the metal organic framework material of the composite material form an interpenetrating network structure, so that the stability of the metal organic framework material is effectively improved, the mesoporous molecular sieve generates a new super-cage structure in the process of interpenetrating structure with the metal organic framework material, and the pore volume and the pore size of the composite material are improved.
(3) The SAPO mesoporous molecular sieve containing silicon and aluminum components is introduced into the metal organic framework material unit, and an interpenetrating network structure is formed, so that the total acid quantity is improved and the distribution is more uniform.
(4) The preparation method is simple in preparation process, convenient to operate, energy-saving, environment-friendly, free of special processing equipment and suitable for industrial production.
Drawings
FIGS. 1 to 5 are nitrogen adsorption-desorption isotherms of the composite materials prepared by the copper-based metal-organic framework material, example 1, example 6, comparative example 1 and comparative example 3;
FIG. 6 is a thermogravimetric curve (TG) of a copper-based metal-organic framework material, a composite material prepared in example 1 and comparative example 1;
fig. 7 to 11 are Scanning Electron Micrographs (SEM) of the composite materials prepared in the copper-based metal organic framework material, example 1, example 6, comparative example 1 and comparative example 3.
Detailed Description
The composite materials according to the invention, and the methods for their preparation and their use are further illustrated by the examples below. The embodiments and specific operation procedures are given on the premise of the technical scheme of the invention, but the protection scope of the invention is not limited to the following embodiments.
The experimental methods in the following examples, unless otherwise specified, are all conventional in the art. The experimental materials used in the examples described below, unless otherwise specified, were purchased from conventional biochemical reagent stores.
Example 1
Mixing 20g of copper nitrate trihydrate, 10g of trimesic acid, 800g of deionized water and 1g of polyether amine D-230, and stirring at 200rpm for 1h at 20 ℃ to obtain a copper-based metal organic framework material prepolymer. 50g of silica sol, 105g of pseudo-boehmite, 115g of phosphoric acid solution with the mass concentration of 85% and 900g of deionized water are mixed, and stirred at 550rpm for reaction for 3.5 hours at 150 ℃ to obtain a mesoporous molecular sieve precursor. And placing the mesoporous molecular sieve precursor and the copper-based metal organic framework material prepolymer into a closed reaction kettle according to the mass ratio of 1:7, and stirring at 450rpm for reaction for 24 hours at 225 ℃. And (3) centrifugally separating the obtained mixture, repeatedly washing with deionized water, and drying at 180 ℃ for 12 hours to obtain the composite material.
Example 2
Mixing 20g of copper nitrate trihydrate, 8g of trimesic acid, 600g of deionized water and 0.6g of polyether amine D-230, and stirring at 260rpm for 3 hours at 25 ℃ to obtain a copper-based metal organic framework material prepolymer. 50g of silica sol, 80g of pseudo-boehmite, 95g of phosphoric acid solution with the mass concentration of 85% and 750g of deionized water are mixed, and stirred at 400rpm for reaction for 1h at 140 ℃ to obtain a mesoporous molecular sieve precursor. And placing the mesoporous molecular sieve precursor and the copper-based metal organic framework material prepolymer into a closed reaction kettle according to the mass ratio of 1:6, and stirring at 300rpm for reaction for 20 hours at 210 ℃. And (3) centrifugally separating the obtained mixture, repeatedly washing with deionized water, and drying at 170 ℃ for 10 hours to obtain the composite material.
Example 3
Mixing 20g of copper nitrate trihydrate, 12g of trimesic acid, 1000g of deionized water and 1.2g of polyether amine D-230, and stirring at 350rpm for 5 hours at 30 ℃ to obtain a copper-based metal organic framework material prepolymer. 50g of silica sol, 125g of pseudo-boehmite, 165g of phosphoric acid solution with the mass concentration of 85% and 1000g of deionized water are mixed, and stirred at 600rpm for reaction for 4 hours at 160 ℃ to obtain a mesoporous molecular sieve precursor. And placing the mesoporous molecular sieve precursor and the copper-based metal organic framework material prepolymer into a closed reaction kettle according to the mass ratio of 1:8, and stirring at 240 ℃ for reaction for 30 hours at 500 rpm. And (3) centrifugally separating the obtained mixture, repeatedly washing with deionized water, and drying at 200 ℃ for 15 hours to obtain the composite material.
Example 4
In example 1, copper sulfate pentahydrate was used instead of copper nitrate trihydrate, and other reaction conditions and material compositions were unchanged, to obtain a composite material.
Example 5
In example 1, copper chloride dihydrate was used instead of copper nitrate trihydrate, and other reaction conditions and material compositions were unchanged, to obtain a composite material.
Example 6
In example 1, triethylamine was used instead of polyetheramine D-230, and other reaction conditions and material compositions were unchanged to obtain a composite material.
Example 7
In example 1, isobutylamine was used instead of polyetheramine D-230, and other reaction conditions and material composition were unchanged, to obtain a composite material.
Example 8
In example 1, tetraethyl orthosilicate was used instead of silica sol, and other reaction conditions and material compositions were unchanged, to obtain a composite material.
Example 9
In example 1, silica powder was used instead of silica sol, and other reaction conditions and material compositions were unchanged to obtain a composite material.
Example 10
In example 1, the stirring reaction temperature of the mixture of the metal organic framework material prepolymer and the mesoporous molecular sieve precursor is raised to 260 ℃, the reaction time is 10 hours, and other reaction conditions and material compositions are unchanged, so that the composite material is obtained.
Example 11
In example 1, the stirring reaction temperature of the mixture of the metal organic framework material prepolymer and the mesoporous molecular sieve precursor is reduced to 180 ℃, the reaction time is 50 hours, and other reaction conditions and material compositions are unchanged, so that the composite material is obtained.
Comparative example 1
In example 1, polyetheramine D-230 was omitted, and the other reaction conditions and material composition were unchanged, to obtain a composite material.
Comparative example 2
In example 1, the copper-based metal organic framework material prepolymer was suction-filtered, repeatedly rinsed with deionized water, and dried at 120 ℃ for 12 hours to obtain copper-based metal organic framework material powder. The copper-based metal-organic framework material powder is adopted to replace the copper-based metal-organic framework material prepolymer, and other reaction conditions and material compositions are unchanged, so that the composite material is obtained.
Comparative example 3
In example 1, mesoporous molecular sieve powder was used instead of mesoporous molecular sieve precursor, and other reaction conditions and material composition were unchanged to obtain a composite material.
Comparative example 4
According to the method described in CN105562059A, a hydrothermal method is adopted to prepare the metal chromium organic framework material MIL-101. The zeolite colloid is prepared by mechanical wet grinding. The zeolite raw powder was alternately washed with absolute ethanol and deionized water 1 time and then dried in a vacuum oven at 80 ℃ for 24 hours. The zeolite particles were dispersed in the form of colloidal particles in solvent water to obtain a zeolite sol gel having a solid content of 15 wt%. The zeolite colloid is filled in the metal organic framework material. Mixing zeolite sol gel with solid content of 15wt% with metal chromium organic framework material MIL-101 in a mass ratio of 8:1, and carrying out vacuum sealing reaction for 2.5h at 90-95 ℃ under slow and uniform stirring. And then, after molding and vacuum drying, roasting for 3 hours in an argon shielding gas atmosphere with the flow rate of 5mL/min at 400 ℃ to obtain the chromium-doped zeolite molecular sieve N.
Comparative example 5
According to the method described in CN107597190A, firstly, 0.747 g of cobalt acetate, 0.5 g of terephthalic acid and 2.5 g of g Y are added into a beaker, 60g of N, N-Dimethylformamide (DMF) is added, and the mixture is stirred in a magnetic stirrer at a water bath of 40 ℃ for self-assembly reaction for 4 hours, and then the precursor of the zeolite molecular sieve crystal grain surface assembled metal organic framework film material is obtained through suction filtration, hot DMF and hot ethanol respectively washing and vacuum drying. The precursor material is placed into a 20ml polytetrafluoroethylene lining, then the 20ml lining is placed into a 100ml lining with 5g of water added in advance, then the 100ml lining is placed into a closed reaction kettle, and the reaction kettle is placed into a baking oven to synthesize the metal organic framework membrane material assembled on the surface of zeolite molecular sieve crystal grains through steam assisted crystallization for 4 hours at 200 ℃. And (3) carrying out primary solvent heat washing treatment on the crystallized and synthesized material at the temperature of DMF 60 ℃, sequentially carrying out washing and heat washing treatment on a filter cake, carrying out secondary suction filtration treatment at the temperature of ethanol 60 ℃, sequentially washing and vacuum drying treatment at the temperature of 80 ℃ on the filter cake, and thus obtaining the zeolite molecular sieve grain surface assembled metal organic framework membrane material O.
Test example 1
The physicochemical properties of the composite materials in examples 1 to 11 and comparative examples 1 to 5 were measured, and specific results are shown in Table 1. The specific surface area, pore volume and average pore diameter were measured by ASAP 2020 adsorption instrument from Micromeritics company of America, the test temperature was-196℃and the sample was degassed at 120℃for 10 hours before the test, and the result was calculated by Brunauer-Emmett-Teller (BET) method. The acid amount and acid strength were measured by a Nicolet 5DX Fourier transform infrared spectrometer, and the sample was measured at 14.71×10 6 Tabletting under Pa, placing in infrared tank, vacuumizing to 133.3X10 at 500deg.C -4 And (3) Pa, adsorbing pyridine at room temperature, heating to 200 ℃ after balancing, vacuumizing for 0.5h, and cooling to room temperature for infrared spectrometry. Copper-based metal organic boneAnd (3) carrying out suction filtration on the frame material prepolymer, repeatedly flushing with deionized water, and drying at 120 ℃ for 12 hours to obtain copper-based metal organic framework material powder serving as a reference agent.
Table 1 physicochemical properties of the composite materials prepared in examples and comparative examples
As can be seen from Table 1, the composite material prepared by the invention has good physicochemical properties, the average pore diameter is 6.5 nm-8.3 nm under the condition of maintaining a certain specific surface area and Kong Rongqian, and the N of the copper-based metal-organic framework material and the composite material is shown in figures 1-5 2 The adsorption-desorption curve shows that the copper-based metal organic framework material is a microporous material, and the composite material contains hysteresis loops, namely the composite material is a mesoporous material. In addition, as can be seen from the thermogravimetric curve of fig. 6, the composite material prepared by the present invention has good heat-resistant stability. The scanning electron microscope photographs of fig. 7-11 show that the morphology of the mesoporous molecular sieve and copper-based metal organic framework material interpenetrating structure is changed from octahedron to ellipse, and the sample of the embodiment does not have the detachment phenomenon of the mesoporous molecular sieve and the copper-based metal organic framework material because the polyetheramine D-230 plays a role in crosslinking. In contrast, in the sample of comparative example 1, since polyetheramine D-230 was not present, the effect of bonding the mesoporous molecular sieve and the copper-based metal organic framework material was poor, and in the sample of comparative example 3, only the metal organic framework material was used as a template agent, and no interpenetrating structure was formed.
Test example 2
The catalytic effect of the copper-based metal organic framework material, the composites of examples 1-11 and comparative examples 1-5 on the synthesis of polyetheramine (D-230) from polypropylene glycol (230) was measured. Before testing, the catalyst prepared in the example was dried at 100℃for 1h, and reduced at 220℃for 2h at a hydrogen flow rate of 60mL/min to complete the catalyst reduction. 300g of polypropylene glycol (average molecular weight 230), 30g of liquid ammonia and 5g of reduction catalyst are taken and added into a high-pressure reaction kettle, and the reaction is carried out for 2 hours under the conditions of 160 ℃ of reaction temperature, 0.5MPa of hydrogen partial pressure and 4.5MPa of total reaction pressure. The test results are shown in Table 2.
Table 2 catalytic effect of the catalysts prepared in examples and comparative examples
As can be seen from Table 2, the composite material prepared by the invention has good catalytic activity and selectivity in the catalytic amination reaction of polyether amine synthesized by polypropylene glycol. This is because the composite material prepared by the invention has moderate acid quantity and acid distribution, is favorable for the main reaction of polyetheramine to generate, and inhibits side reactions including coking and cracking from occurring. Meanwhile, the composite material prepared by the invention still maintains higher reactivity and selectivity after half a year, and the polypropylene glycol conversion rate and the main product D-230 selectivity of the sample of the example 1 after half a year are still maintained at 98.1% and 98.7%, which indicates that the active center in the composite material plays a long-lasting role, and the composite material of the invention has longer service life. This provides room for the diffusion of the raw polypropylene glycol and its reaction intermediates within and outside the catalyst. The mesoporous molecular sieve of the composite material and the copper-based metal organic framework material form an interpenetrating network structure, the polyetheramine D-230 further plays a crosslinking role, and the acid quantity and acid distribution of the composite material are effectively regulated and controlled, so that the high-quality polyetheramine product is generated.
Claims (20)
1. The preparation method of the metal-organic framework composite material is characterized by comprising the following steps of:
(1) Mixing copper salt, trimesic acid, deionized water and amine substances in proportion, and stirring at room temperature for reaction to obtain a metal organic framework material prepolymer; the amine substance is selected from amino functional groups (-NH) 2 ) Primary amine substances at the end of the carbon chain;
(2) Mixing a silicon source, pseudo-boehmite, a phosphoric acid solution and deionized water in proportion, and stirring at a certain temperature for reaction to obtain a mesoporous molecular sieve precursor;
(3) And (3) placing the metal organic framework material prepolymer and the mesoporous molecular sieve precursor into a closed reactor, stirring at a certain temperature for reaction, and centrifugally separating, washing and drying to obtain the metal organic framework composite material.
2. The method according to claim 1, characterized in that: in the step (1), the copper salt is at least one selected from copper nitrate trihydrate, copper sulfate pentahydrate and copper chloride dihydrate.
3. The method according to claim 2, characterized in that: the copper salt is copper nitrate trihydrate.
4. The method according to claim 1, characterized in that: in the step (1), the amine substance is at least one of triethylamine, isobutyl amine and polyetheramine D-230.
5. The method according to claim 1, characterized in that: in the step (1), the mass ratio of the copper salt to the trimesic acid to the deionized water to the amine substances is 1: (0.1-1): (10-100): (0.01-0.1).
6. The method according to claim 5, wherein: the mass ratio of the copper salt to the trimesic acid to the deionized water to the amine substances is 1: (0.4-0.6): (30-50): (0.03-0.06).
7. The method according to claim 1, characterized in that: in the step (2), the silicon source is at least one selected from silica sol, tetraethyl orthosilicate and silicon powder.
8. The method according to claim 7, wherein: the silicon source is silica sol.
9. The method according to claim 1, characterized in that: in the step (2), the mass ratio of the silicon source, the pseudo-boehmite, the phosphoric acid solution and the deionized water is 1: (0.8-3.9): (1-5): (10-30).
10. The method according to claim 9, wherein: the mass ratio of the silicon source to the pseudo-boehmite to the phosphoric acid solution to the deionized water is 1: (1.6-2.5): (1.9-3.3): (15-20).
11. The method according to claim 1, characterized in that: in the step (2), the reaction temperature is 140-160 ℃; the stirring speed is 400 rpm-600 rpm, and the stirring time is 1 h-4 h.
12. The method according to claim 1, characterized in that: in the step (3), the mass ratio of the mesoporous molecular sieve precursor to the metal organic framework material prepolymer is 1: (1-10).
13. The method according to claim 12, wherein: the mass ratio of the mesoporous molecular sieve precursor to the metal organic framework material prepolymer is 1: (6-8).
14. The method according to claim 1, characterized in that: in the step (3), the stirring temperature is 180-260 ℃, the stirring rotating speed is 300-500 rpm, and the stirring time is 10-50 h; the drying temperature is 170-200 ℃ and the drying time is 10-15 h.
15. The method according to claim 14, wherein: the stirring temperature is 210-240 ℃; the stirring time is 20-30 h.
16. A metal organic framework composite material, characterized in that it is prepared by the method according to any one of claims 1-15.
17. The composite material of claim 16, wherein: based on the total mass of the material, the content of the mesoporous molecular sieve is 10-50%, and the metal organic framework materialThe content of the material is 50% -90%; the specific surface area of the composite material is 800m 2 /g～900m 2 Per gram, total pore volume of 0.85cm 3 /g～1.09 cm 3 And/g, the average pore diameter is 6.5-8.3 nm, and the crushing strength is 1.5-2.5 MPa.
18. Use of a composite material according to claim 16 or 17, characterized in that polyetheramines having a molecular weight of less than 1000 are synthesized by catalytic amination.
19. The use according to claim 18, characterized in that: before use, the prepared composite material is reduced, and the reduction process is as follows: before testing, the catalyst is dried for 1-3 hours at 80-120 ℃, and then the catalyst is reduced for 1-3 hours at 200-220 ℃ under the condition of 50-70 mL/min hydrogen flow rate.
20. The use according to claim 18, characterized in that: taking 1 g-7 g of reduced catalyst, 200 g-400 g of polypropylene glycol and 15 g-40 g of liquid ammonia, and reacting for 0.5 h-4 h under the conditions of the reaction temperature of 140-200 ℃ and the hydrogen partial pressure of 0.1-1 MPa and the total reaction pressure of 3-6 MPa, wherein the raw material conversion rate is more than 95%, and the primary amine product selectivity is more than 98%.
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Effective date of registration: 20231122 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |