CN113058634B - 一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 - Google Patents
一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 Download PDFInfo
- Publication number
- CN113058634B CN113058634B CN202110351513.7A CN202110351513A CN113058634B CN 113058634 B CN113058634 B CN 113058634B CN 202110351513 A CN202110351513 A CN 202110351513A CN 113058634 B CN113058634 B CN 113058634B
- Authority
- CN
- China
- Prior art keywords
- silicalite
- modified
- catalyst
- gan
- molecular sieve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 106
- 230000003197 catalytic effect Effects 0.000 title abstract description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000002808 molecular sieve Substances 0.000 claims abstract description 59
- 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 59
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 42
- 239000001294 propane Substances 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000002360 preparation method Methods 0.000 claims abstract description 31
- 239000012298 atmosphere Substances 0.000 claims abstract description 23
- 238000006356 dehydrogenation reaction Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 35
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- CHPZKNULDCNCBW-UHFFFAOYSA-N gallium nitrate Chemical compound [Ga+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CHPZKNULDCNCBW-UHFFFAOYSA-N 0.000 claims description 20
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 claims description 17
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 13
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 230000007935 neutral effect Effects 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 239000004202 carbamide Substances 0.000 claims description 10
- 229940044658 gallium nitrate Drugs 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 238000011068 loading method Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000006555 catalytic reaction Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 239000012495 reaction gas Substances 0.000 claims description 4
- BGQMOFGZRJUORO-UHFFFAOYSA-M tetrapropylammonium bromide Chemical compound [Br-].CCC[N+](CCC)(CCC)CCC BGQMOFGZRJUORO-UHFFFAOYSA-M 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 2
- 239000005695 Ammonium acetate Substances 0.000 claims description 2
- 229940043376 ammonium acetate Drugs 0.000 claims description 2
- 235000019257 ammonium acetate Nutrition 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- FYWVTSQYJIPZLW-UHFFFAOYSA-K diacetyloxygallanyl acetate Chemical compound [Ga+3].CC([O-])=O.CC([O-])=O.CC([O-])=O FYWVTSQYJIPZLW-UHFFFAOYSA-K 0.000 claims description 2
- 229940044631 ferric chloride hexahydrate Drugs 0.000 claims description 2
- 229910000373 gallium sulfate Inorganic materials 0.000 claims description 2
- UPWPDUACHOATKO-UHFFFAOYSA-K gallium trichloride Chemical compound Cl[Ga](Cl)Cl UPWPDUACHOATKO-UHFFFAOYSA-K 0.000 claims description 2
- SBDRYJMIQMDXRH-UHFFFAOYSA-N gallium;sulfuric acid Chemical compound [Ga].OS(O)(=O)=O SBDRYJMIQMDXRH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- NQXWGWZJXJUMQB-UHFFFAOYSA-K iron trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].Cl[Fe+]Cl NQXWGWZJXJUMQB-UHFFFAOYSA-K 0.000 claims description 2
- SZQUEWJRBJDHSM-UHFFFAOYSA-N iron(3+);trinitrate;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O SZQUEWJRBJDHSM-UHFFFAOYSA-N 0.000 claims description 2
- FCKJABJGVFTWPW-UHFFFAOYSA-H iron(3+);trisulfate;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O FCKJABJGVFTWPW-UHFFFAOYSA-H 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 239000001307 helium Substances 0.000 claims 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 124
- 239000000243 solution Substances 0.000 description 34
- 239000008367 deionised water Substances 0.000 description 19
- 229910021641 deionized water Inorganic materials 0.000 description 19
- 239000007864 aqueous solution Substances 0.000 description 9
- 238000007873 sieving Methods 0.000 description 8
- 229910002554 Fe(NO3)3·9H2O Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005580 one pot reaction Methods 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005839 oxidative dehydrogenation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011865 Pt-based catalyst Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- CMNGAUGWXGMLDK-UHFFFAOYSA-H digallium;trisulfate;hydrate Chemical compound O.[Ga+3].[Ga+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O CMNGAUGWXGMLDK-UHFFFAOYSA-H 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Images
Classifications
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen 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
- B01J29/88—Ferrosilicates; Ferroaluminosilicates
-
- B01J35/23—
-
- 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
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/036—Precipitation; Co-precipitation to form a gel or a cogel
-
- 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
- B01J37/082—Decomposition and pyrolysis
-
- 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
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- 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
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
-
- 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
- C01B37/065—Aluminophosphates containing other elements, e.g. metals, boron the other elements being metals only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/04—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/06—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis
- C01B39/08—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis the aluminium atoms being wholly replaced
- C01B39/087—Ferrosilicates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
- B01J2229/183—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself in framework positions
-
- 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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/24—Nitrogen compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/88—Ferrosilicates; Ferroaluminosilicates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
本发明公开了一种Fe改性‑Silicalite‑1负载GaN催化剂及其催化应用,该催化剂以GaN为活性组分,以Si/Fe物质的量比为500~5000的Fe改性‑Silicalite‑1分子筛为载体,采用浸渍法,将Fe改性‑Silicalite‑1分子筛粉末浸渍于含有N源和Ga源的溶液中,超声分散均匀后干燥,再于惰性气氛中焙烧,压片、造粒、筛分获得。本发明催化剂的特点在于Silicalite‑1分子筛骨架或孔道内的Fe和活性组分GaN具有一定的相互作用,使催化剂在CO2氧化丙烷脱氢反应中具有优异的性能,高温条件下,丙烷的转化率高达59.1%,丙烯产率达37.8%;且催化剂制备过程简单、原料来源广泛、环境友好、成本低廉,具有一定的工业应用前景。
Description
技术领域
本发明属于催化剂制备技术和催化剂反应工程技术领域,具体涉及一种Fe改性-Silicalite-1负载GaN催化剂的合成及其催化应用。
背景技术
丙烯是仅次于乙烯的一种重要石油化工基本原料,主要用于生产聚丙烯、苯酚、丙酮、丁醇、辛醇、丙烯腈、环氧丙烷、丙烯酸以及异丙醇等。在现阶段,受下游衍生物需求快速增长的驱动,全球丙烯消费量大幅提高,而丙烯产量却相对滞后,丙烯市场供应存在很大缺口。目前丙烯主要通过石脑油裂解制乙烯联产丙烯、催化裂化所产液化气经分离制丙烯等传统工艺获得。随石油资源匮乏,传统丙烯生产技术已无法满足日益增长的丙烯需求,寻求新的丙烯生产技术已成为石油化工行业亟需突破的难题。近几年,全球页岩气和我国天然气的迅速开发导致天然气产量猛增。丙烷脱氢制丙烯逐渐成为一种有效的工艺手段,其不但可以将廉价易得的丙烷脱氢制得市场紧缺且高附加值的丙烯,同时解决了丙烯需求缺口大和丙烷综合利用率低两大重要问题。
目前,丙烷脱氢制丙烯主要包括直接脱氢和氧化脱氢。其中,丙烷直接脱氢热力学为吸热、分子量增多的反应,通常在高温、减少烷烃分压情况下进行,所用催化剂多为贵金属(Pt系催化剂,成本过高),重金属(Cr系催化剂,非环境友好型)等,且催化剂存在选择性低、易失活等缺点。丙烷氧化脱氢是在直接催化脱氢的基础上,引入氧化剂(主要包括O2和CO2)。当氧化剂为O2时,可与催化剂上的积炭反应,减少积炭生成。但O2的氧化能力过强,常常使反应物发生深度氧化,导致产物烯烃选择性过低,不能达到工业生产的要求。因此,可使用较温和的氧化剂(如CO2)取代O2,在多种催化剂上将丙烷转化为丙烯。CO2的引入可以有效抑制脱氢过程中丙烯的深度氧化,使丙烯选择性得到提高,并且在“碳达峰和碳中和”背景下,对CO2的资源利用及降低温室效应具有重要意义,是一条“绿色化学”途径,具有可观的应用前景。
到目前为止,CO2氧化丙烷脱氢制丙烯反应(CO2-ODHP)催化剂研究公开技术主要包括:Gao等人(One-pot synthesis of Ca oxide-promoted Cr catalysts for thedehydrogenation of propane using CO2,Industrial&Engineering ChemistryResearch,2020,59,12645-12656)使用“一锅法”在ZrO2载体上制备了以CaO为助剂的Cr基催化剂并将其用于CO2-ODHP反应。结果表明,一锅合成法提供了一个更均匀和高度分散的催化活性相,使得Cr物种更有效地参与脱氢过程,添加CaO作为促进剂可获得更高的丙烯选择性,其丙烷转化率为23%,丙烯选择性达90%。授权发明专利(刘昭铁,张琳,陈建刚,宋健,王宽,何珍红,刘忠文,申请公开号CN109126855A)和已发表论文(Facile synthesis ofSiO2 supported GaN as an active catalyst for CO2 enhanced dehydrogenation ofpropane,Journal of CO2 Utilization,2020,38,306-313)公开了一种负载型GaN催化剂及其催化CO2氧化丙烷脱氢反应中的应用。该项研究主要以Q系列SiO2为载体,GaN为活性组分制备出GaN/Q-x(x=3,6,15,30,50)催化剂,结果表明,丙烷转化率达到30%,丙烯选择性达到90%。上述研究均存在丙烷转化率较低,丙烯收率低等缺点。
发明内容
本发明针对上述催化剂存在的一些问题,提供了一种合成简便、用于CO2氧化丙烷脱氢反应性能更优的Fe改性-Silicalite-1负载GaN催化剂。
为了实现上述目的,本发明采用的催化剂是以GaN为活性组分,以Si/Fe物质的量比为500~5000的Fe改性-Silicalite-1分子筛为载体,且以催化剂的质量为100%计,GaN的负载量为1%~20%;优选以GaN为活性组分,以Si/Ga物质的量比为2000~3000的Fe改性-Silicalite-1分子筛为载体,且以催化剂的质量为100%计,GaN负载量为5%~10%。
本发明催化剂的制备方法为:将Ga源和N源按照质量比为1:1~4加入溶剂中,形成透明溶液,然后将Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散30~90min,之后将混合物于50~90℃干燥4~8h,再将其置于惰性气氛中700~900℃焙烧1~4h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂。
上述催化剂的制备方法中,优选Ga源和N源按照质量比为1:2~3加入溶剂中,形成透明溶液,然后将Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散40~70min,之后将混合物于60~80℃干燥5~7h,再将其置于惰性气氛中750~800℃焙烧2~3h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂。
上述催化剂的制备方法中,所述的Ga源为三氯化镓、硫酸镓、硝酸镓、醋酸镓中任意一种;所述的N源为尿素、三聚氰胺、硫酸铵、醋酸铵、氯化铵中任意一种;所述溶液的溶剂为甲醇、乙醇、水中任意一种;所述的惰性气氛为N2、Ar、He中任意一种。
上述Fe改性-Silicalite-1分子筛由以下方法制备得到:将Si/Fe物质的量比为500~5000的Fe源和Si源混合于含有模板剂的水溶液中,连续搅拌5~12h制成均匀凝胶,凝胶中Si、Fe、模板剂、H2O的物质的量比为1:0.0002~0.002:0.2~0.6:20~48;然后将该凝胶转移至内衬为聚四氟乙烯的高压水热釜中,150~200℃连续水热反应2~7天,冷却至室温后,离心、洗涤直至中性,在70~130℃干燥8~12h,所得固体粉末在500~700℃空气中焙烧6~12h,得到Fe改性-Silicalite-1分子筛。
上述Fe改性-Silicalite-1分子筛优选由以下方法制备得到:将Si/Fe物质的量比为2000~3000的Fe源和Si源混合于含有模板剂的水溶液中,连续搅拌6~8h制成均匀凝胶,凝胶中Si、Fe、模板剂、H2O的物质的量比为1:0.0003~0.0005:0.2~0.3:25~35;然后将该凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180~190℃连续水热反应2~4天,冷却至室温后,离心、洗涤直至中性,在100~110℃干燥8~10h,所得固体粉末在550~650℃空气中焙烧8~10h,得到Fe改性-Silicalite-1分子筛。
上述Fe改性-Silicalite-1分子筛的制备方法中,所述的Fe源为九水合硝酸铁、六水合氯化铁、九水合硫酸铁中任意一种;所述的Si源为硅酸四乙酯(TEOS)、硅溶胶JN40、白炭黑中任意一种;所述的模板剂为四丙基氢氧化铵(TPAOH)、四丙基溴化铵(C12H28BrN)中任意一种。
本发明Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,具体方法为:将Fe改性-Silicalite-1负载GaN催化剂经石英砂稀释后装入固定床反应器中,在氮气气氛下升温至550~650℃,恒温1~2h;通入反应气,其中丙烷和CO2的物质的量比为1:1~4,N2为平衡气,保持总气数不变,丙烷的反应空速为0.5~2h-1。
本发明的有益效果如下:
本发明采用水热法制备Fe改性-Silicalite-1分子筛载体,通过浸渍法将GaN活性组分引入载体表面,成功制备了Fe改性-Silicalite-1负载GaN催化剂,并将其用于催化CO2氧化丙烷脱氢制丙烯反应中。结果表明该催化剂具有优异的催化性能,丙烷的转化率高达59.1%,丙烯产率达37.8%。且反应产物可通过调整Si/Fe的物质的量比进行调控。
附图说明
图1是对比例1和实施例1~3制备的不同Si/Fe物质的量比的Fe改性-Silicalite-1负载GaN催化剂的XRD谱图。
图2是对比例1和实施例1~3制备的不同Si/Fe物质的量比的Fe改性-Silicalite-1负载GaN催化剂的SEM谱图。
图3是不同Si/Fe物质的量比的Fe改性-Silicalite-1负载GaN催化剂催化CO2氧化丙烷脱氢制丙烯反应的丙烷转化率随时间的变化趋势曲线。
图4是不同Si/Fe物质的量比的Fe改性-Silicalite-1负载GaN催化剂催化CO2氧化丙烷脱氢制丙烯反应的丙烯选择性随时间的变化趋势曲线。
图5是不同Si/Fe物质的量比的Fe改性-Silicalite-1负载GaN催化剂催化CO2氧化丙烷脱氢制丙烯反应的丙烯产率随时间的变化趋势曲线。
具体实施方式
为了使本发明要解决的技术问题、技术方案及有益效果更加清楚明白,以下结合附图和实施例,对本发明作进一步详细说明。值得注意,此处所描述的具体实施例仅用以对本发明进行解释说明,本发明的保护范围不仅限于这些实例。
对比例1
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.01:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.24g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为100的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.3g水合硝酸镓和0.6g尿素加入4mL甲醇中形成透明溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为100的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/100-Fe-Silicalite-1催化剂。
实施例1
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.002:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.05g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为500的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.3g水合硝酸镓和0.6g尿素加入4mL甲醇中形成透明溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为500的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/500-Fe-Silicalite-1催化剂。
实施例2
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.001:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.025g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为1000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.3g水合硝酸镓和0.6g尿素加入4mL甲醇中形成透明溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为1000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/1000-Fe-Silicalite-1催化剂。
实施例3
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.0005:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.012g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.3g水合硝酸镓和0.6g尿素加入4mL甲醇中形成透明溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/2000-Fe-Silicalite-1催化剂。
实施例4
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:C12H28BrN:H2O=1:0.0005:0.25:30,将3.994g四丙基溴化铵溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.008g FeCl3·6H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.3g水合硝酸镓和0.6g尿素加入4mL乙醇中形成溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于100℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/2000-Fe-Silicalite-1催化剂。
实施例5
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:C12H28BrN:H2O=1:0.0005:0.25:30,将3.994g四丙基溴化铵溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.008g FeCl3·6H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:1,将0.5g水合硫酸镓和0.5g三聚氰胺加入10mL去离子水中形成溶液,然后将0.95g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于100℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为5%,记为5-GaN/2000-Fe-Silicalite-1催化剂。
实施例6
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.0005:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.012g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.2g水合硝酸镓和0.4g尿素加入4mL甲醇中形成透明溶液,然后将0.97g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为3%,记为3-GaN/2000-Fe-Silicalite-1催化剂。
实施例7
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.0005:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.012g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.6g水合硝酸镓和1.2g尿素加入6mL甲醇中形成透明溶液,然后将0.90g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为10%,记为10-GaN/2000-Fe-Silicalite-1催化剂。
实施例8
1、Fe改性-Silicalite-1分子筛的制备
根据物质的量比Si:Fe:TPAOH:H2O=1:0.0005:0.25:30,将12.2g TPAOH溶于32.4g去离子水中搅拌1h使混合均匀,然后将12.5g TEOS逐滴加入上述水溶液中,连续搅拌6h后,将0.012g Fe(NO3)3·9H2O加入上述溶液中,连续搅拌6h得到Fe改性-Silicalite-1分子筛凝胶。将得到的凝胶转移至内衬为聚四氟乙烯的高压水热釜中,180℃连续水热反应3天,冷却至室温后,使用去离子水进行离心、洗涤直至中性、在100℃干燥9h,所得固体粉末在550℃空气中焙烧7h,得到Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛。
2、Fe改性-Silicalite-1负载GaN催化剂的制备
按照Ga源与N源质量比为1:2,将0.9g水合硝酸镓和1.8g尿素加入6mL甲醇中形成透明溶液,然后将0.85g步骤1制得的Si/Fe物质的量比为2000的Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散45min,之后将混合物于60℃干燥6h,再将其置于N2气氛中800℃焙烧1h,在空气气氛中550℃脱碳处理2h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂,其中GaN负载量为15%,记为15-GaN/2000-Fe-Silicalite-1催化剂。
对上述对比例1和实施例1~3制备的催化剂进行XRD表征,结果如图1所示。与标准卡片PDF#43-0784比对可知,其特征峰基本对应Silicalite-1的标准卡片,呈现出标准MFI型分子筛的XRD谱图,说明掺入少量的铁并未改变分子筛的骨架结构,Fe改性Silicalite-1分子筛仍然呈现标准双十元环交叉孔道结构。且负载5%GaN并未在XRD谱图中出现GaN的特征峰,说明GaN在Fe改性Silicalite-1分子筛上分散均匀。
对上述对比例1和实施例1~3制备的催化剂进行SEM表征,结果如图2所示。可以看到,当Si/Fe物质的量比为100时,催化剂的立方晶体结构遭到破坏,表面凹凸不光滑,且出现分散不均匀的GaN纳米颗粒。随着Si/Fe物质的量比的增大,催化剂逐渐呈现大小均一、表面光滑的立方晶体结构,且GaN纳米颗粒在催化剂表面分散均匀。
实施例9
Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用
将0.2g对比例1和实施例1~3制备的Fe改性-Silicalite-1负载GaN催化剂分别经40~60目石英砂稀释后装入固定床反应器中,在氮气气氛下升温至600℃,恒温0.5h,并通入反应气,其中丙烷和CO2的物质的量比为1:2,N2为平衡气,保持总气数不变,丙烷的反应空速为1.13h-1,进行CO2氧化丙烷脱氢反应,其反应结果如图3~5所示。由图3~5可知,随着Si/Fe物质的量比的增加,丙烷转化率呈上升趋势,相反丙烯选择性呈下降趋势;当Si/Fe物质的量比为2000时。其初始转化率高达59.1%,丙烯产率达37.8%,明显高于专利CN109126855A所公开的结果。
将0.2g实施例4~8制备的Fe改性-Silicalite-1负载GaN催化剂分别经40~60目石英砂稀释后装入固定床反应器中,在氮气气氛下升温至600℃,恒温0.5h,并通入反应气,其中丙烷和CO2的物质的量比为1:2,N2为平衡气,保持总气数不变,丙烷的反应空速为1.13h-1,进行CO2氧化丙烷脱氢反应,其反应结果如表1所示。
表1实施例4~8制备的Fe改性-Silicalite-1负载GaN催化剂催化性能
转化率(%) | 选择性(%) | 收率(%) | |
实施例4 | 53.7 | 67.9 | 36.5 |
实施例5 | 49.6 | 71.2 | 35.3 |
实施例6 | 38.1 | 85.3 | 32.5 |
实施例7 | 55.7 | 67.2 | 37.4 |
实施例8 | 51.8 | 71.1 | 36.8 |
注:表中数据均为初始阶段催化剂性能。
由表1可见,实施例4~8中制备的Fe改性-Silicalite-1负载GaN催化剂在CO2氧化丙烷脱氢反应中的初始丙烷转化率和丙烯收率均高于专利CN 109126855A所公开的结果。
Claims (6)
1.Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于:该催化剂以GaN为活性组分,以Si/Fe物质的量比为500~5000的Fe改性-Silicalite-1分子筛为载体,以催化剂的质量为100%计算,GaN的负载量为1%~20%;所述催化剂由以下方法制备得到:
将Ga源和N源按照质量比为1:1~4加入溶剂中,形成透明溶液,然后将Fe改性-Silicalite-1分子筛浸渍于该溶液中,超声分散30~90 min,之后将混合物于50~90 ℃干燥4~8 h,再将其置于惰性气氛中700~900 ℃焙烧1~4 h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂;
所述Fe改性-Silicalite-1分子筛由以下方法制备得到:
将Si/Fe物质的量比为500~5000的Si源和Fe源混合于含有模板剂的水溶液中,连续搅拌5~12 h制成均匀凝胶,凝胶中Si、Fe、模板剂、H2O的物质的量比为1:0.0002~0.002:0.2~0.6:20~48;然后将该凝胶转移至内衬为聚四氟乙烯的高压水热釜中,150~200 ℃连续水热反应2~7天,冷却至室温后,离心、洗涤直至中性,在70~130 ℃干燥8~12 h,所得固体粉末在500~700 ℃空气中焙烧6~12 h,得到Fe改性-Silicalite-1分子筛。
2.根据权利要求1所述的Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于:所述催化剂是以GaN为活性组分,以Si/Fe物质的量比为2000~3000的Fe改性-Silicalite-1分子筛为载体,且以催化剂的质量为100%计算,GaN的负载量为5%~10%。
3.根据权利要求2所述的Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于该催化剂由以下方法制备得到:将Ga源和N源按照质量比为1:2~3加入溶剂中,形成透明溶液,然后将Fe改性Silicalite-1分子筛浸渍于该溶液中,超声分散40~70 min,之后将混合物于60~80 ℃干燥5~7 h,再将其置于惰性气氛中750~800 ℃焙烧2~3 h,压片、造粒、筛分,得到Fe改性-Silicalite-1负载GaN催化剂。
4.根据权利要求1或3所述的Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于:所述的Ga源为三氯化镓、硫酸镓、硝酸镓、醋酸镓中任意一种;所述的N源为尿素、三聚氰胺、硫酸铵、醋酸铵、氯化铵中任意一种;所述的溶剂为甲醇、乙醇、水中任意一种;所述的惰性气氛为氮气、氩气、氦气中任意一种。
5.根据权利要求1所述的Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于:所述的Fe源为九水合硝酸铁、六水合氯化铁、九水合硫酸铁中任意一种;所述的Si源为硅酸四乙酯、硅溶胶JN40、白炭黑中任意一种;所述的模板剂为四丙基氢氧化铵、四丙基溴化铵中任意一种。
6.根据权利要求1所述的Fe改性-Silicalite-1负载GaN催化剂在催化CO2氧化丙烷脱氢制丙烯反应中的应用,其特征在于:将Fe改性-Silicalite-1负载GaN催化剂经石英砂稀释后装入固定床反应器中,在氮气气氛下升温至550~650 ℃,恒温1~2 h;通入反应气,其中丙烷和CO2的物质的量比为1:1~4,N2为平衡气,保持总气数不变,丙烷的反应空速为0.5~2h-1。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110351513.7A CN113058634B (zh) | 2021-03-31 | 2021-03-31 | 一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110351513.7A CN113058634B (zh) | 2021-03-31 | 2021-03-31 | 一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113058634A CN113058634A (zh) | 2021-07-02 |
CN113058634B true CN113058634B (zh) | 2023-07-07 |
Family
ID=76564958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110351513.7A Active CN113058634B (zh) | 2021-03-31 | 2021-03-31 | 一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113058634B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115646532B (zh) * | 2022-10-20 | 2023-12-26 | 山西大学 | 一种co2辅助烷烃脱氢的双功能催化剂及其制备和应用 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012104443A1 (es) * | 2011-02-02 | 2012-08-09 | University College Cardiff Consultants Limited | Oxidación selectiva de hidrocarburos usando catalizadores heterogéneos |
CN103752335A (zh) * | 2014-01-06 | 2014-04-30 | 复旦大学 | Fe2O3/Silicalite-1分子筛纳米线及其合成方法和应用 |
CN104098106A (zh) * | 2014-07-08 | 2014-10-15 | 黄河三角洲京博化工研究院有限公司 | 一种一步合成中空式多级孔Fe-Silicalite-1的方法 |
CN105126894A (zh) * | 2015-09-08 | 2015-12-09 | 陕西师范大学 | 一种GaN催化剂及其制备方法和在催化正丁烷氧化脱氢反应中的应用 |
CN108745406A (zh) * | 2018-06-15 | 2018-11-06 | 大连理工大学 | 一种增强Silicalite-1沸石分子筛酸性的方法及其在链烷烃脱氢中的应用 |
CN109126855A (zh) * | 2018-09-25 | 2019-01-04 | 陕西师范大学 | 一种负载型GaN催化剂及其在催化CO2氧化丙烷脱氢反应中的应用 |
CN110614117A (zh) * | 2019-09-10 | 2019-12-27 | 中国石油大学(北京) | Co-Silicalite-1催化剂及其制备方法与应用 |
CN111013642A (zh) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | 抗积碳丙烷脱氢制丙烯催化剂及制备方法 |
CN111036260A (zh) * | 2019-11-11 | 2020-04-21 | 中国石油大学(北京) | 一种氮碳掺杂改性的Fe基催化剂及其制备方法与应用 |
-
2021
- 2021-03-31 CN CN202110351513.7A patent/CN113058634B/zh active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012104443A1 (es) * | 2011-02-02 | 2012-08-09 | University College Cardiff Consultants Limited | Oxidación selectiva de hidrocarburos usando catalizadores heterogéneos |
CN103752335A (zh) * | 2014-01-06 | 2014-04-30 | 复旦大学 | Fe2O3/Silicalite-1分子筛纳米线及其合成方法和应用 |
CN104098106A (zh) * | 2014-07-08 | 2014-10-15 | 黄河三角洲京博化工研究院有限公司 | 一种一步合成中空式多级孔Fe-Silicalite-1的方法 |
CN105126894A (zh) * | 2015-09-08 | 2015-12-09 | 陕西师范大学 | 一种GaN催化剂及其制备方法和在催化正丁烷氧化脱氢反应中的应用 |
CN108745406A (zh) * | 2018-06-15 | 2018-11-06 | 大连理工大学 | 一种增强Silicalite-1沸石分子筛酸性的方法及其在链烷烃脱氢中的应用 |
CN109126855A (zh) * | 2018-09-25 | 2019-01-04 | 陕西师范大学 | 一种负载型GaN催化剂及其在催化CO2氧化丙烷脱氢反应中的应用 |
CN111013642A (zh) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | 抗积碳丙烷脱氢制丙烯催化剂及制备方法 |
CN110614117A (zh) * | 2019-09-10 | 2019-12-27 | 中国石油大学(北京) | Co-Silicalite-1催化剂及其制备方法与应用 |
CN111036260A (zh) * | 2019-11-11 | 2020-04-21 | 中国石油大学(北京) | 一种氮碳掺杂改性的Fe基催化剂及其制备方法与应用 |
Non-Patent Citations (1)
Title |
---|
"Effects of Dopants in PtSn/M-Silicalite-1on Structural Property and on Catalytic Propane Dehydrogenation Performance";Shuai Zhou et al.;《ChemistrySelect》;第5卷;第4175-4185页 * |
Also Published As
Publication number | Publication date |
---|---|
CN113058634A (zh) | 2021-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108479834B (zh) | 一种费托合成催化剂及其制备方法 | |
CN105536811A (zh) | 一种合成气制低碳烯烃的核壳型催化剂及制法和应用 | |
CN101983102A (zh) | 用于费-托合成的钴/锆-磷/二氧化硅催化剂及其制备方法 | |
CN106866332B (zh) | 一种苯和甲醇烷基化催化剂及应用 | |
CN112452328B (zh) | Ni@SiO2@Co-Al2O3多级核壳催化剂的制备方法 | |
CN113058634B (zh) | 一种Fe改性-Silicalite-1负载GaN催化剂及其催化应用 | |
CN110237840A (zh) | 一种铂单原子催化剂的制备及其在丙烷脱氢制丙烯反应中的应用 | |
CN110882708B (zh) | 一种丙烷脱氢催化剂及其制备方法 | |
CN104289222A (zh) | 用于制备苯二酚及对苯醌的在SiO2上负载CuO的催化剂及其制备方法 | |
CN108273547A (zh) | 一种采用真空浸渍法制备负载型分子筛催化剂的方法 | |
CN112808295B (zh) | 一种单位点Co(Ⅱ)催化剂的制备方法及其应用 | |
CN106540674A (zh) | 一种金属掺杂的氧化锆催化剂及其制备方法与在催化合成气催化转化中的应用 | |
CN113457720A (zh) | HMS@NiPt@Beta核壳结构催化材料及其制备方法和应用 | |
CN113070093B (zh) | 一种GaN负载Ga改性-Silicalite-1催化剂及其应用 | |
CN107185525B (zh) | 八面体Pt纳米粒子负载γ-Al2O3型催化剂的制备方法 | |
CN115090293A (zh) | 一种核壳型二氧化铈纳米棒负载镍催化剂及其制备方法 | |
CN114308061B (zh) | NiAu双金属合金纳米催化剂及其合成与应用 | |
CN113600194A (zh) | 一种含不同价态钴的纳米光催化剂、制备方法及其应用 | |
CN109529911B (zh) | 一种丙烷无氧脱氢用铂锡基介孔催化剂及其制备和应用 | |
CN112403466A (zh) | 一种用于甲烷二氧化碳干重整的核壳催化剂的制备方法 | |
CN112625726B (zh) | 合成气制低碳烯烃的方法 | |
CN116550356B (zh) | 一种高转化率、高纯度的Fe2N催化剂及其制备方法和应用 | |
CN113304761B (zh) | 一种PtCu3金属间化合物及其制备方法和作为脱氢催化剂的应用 | |
CN114471580B (zh) | 一种负载型镍镓催化剂的合成及其应用方法 | |
CN112264008B (zh) | 一种Pd/TiO2-{100}复合催化剂及其制备方法与应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |