CN107739302A - 一种光催化甲醇转化合成甲缩醛和乙二醇的方法 - Google Patents
一种光催化甲醇转化合成甲缩醛和乙二醇的方法 Download PDFInfo
- Publication number
- CN107739302A CN107739302A CN201711084553.XA CN201711084553A CN107739302A CN 107739302 A CN107739302 A CN 107739302A CN 201711084553 A CN201711084553 A CN 201711084553A CN 107739302 A CN107739302 A CN 107739302A
- Authority
- CN
- China
- Prior art keywords
- ethylene glycol
- dimethoxym ethane
- methanol
- catalyst
- photocatalysis
- 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.)
- Pending
Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 222
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 197
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 28
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 25
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 58
- 239000003054 catalyst Substances 0.000 claims abstract description 49
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000013019 agitation Methods 0.000 claims abstract description 23
- 229910052724 xenon Inorganic materials 0.000 claims abstract description 23
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001301 oxygen Substances 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 16
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 6
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229960004217 benzyl alcohol Drugs 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 13
- 229910052697 platinum Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 229910002915 BiVO4 Inorganic materials 0.000 claims description 5
- 229910003256 NaTaO3 Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052976 metal sulfide Inorganic materials 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003426 co-catalyst Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 24
- 238000005406 washing Methods 0.000 description 24
- 238000001291 vacuum drying Methods 0.000 description 23
- 239000000243 solution Substances 0.000 description 22
- 239000007789 gas Substances 0.000 description 20
- 238000006555 catalytic reaction Methods 0.000 description 19
- 238000004587 chromatography analysis Methods 0.000 description 17
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 17
- 229910001873 dinitrogen Inorganic materials 0.000 description 15
- 239000007864 aqueous solution Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 11
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 10
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 10
- 238000000227 grinding Methods 0.000 description 10
- 239000002105 nanoparticle Substances 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 150000002171 ethylene diamines Chemical class 0.000 description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 8
- 238000007540 photo-reduction reaction Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 230000002194 synthesizing effect Effects 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- 239000004201 L-cysteine Substances 0.000 description 5
- 235000013878 L-cysteine Nutrition 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- -1 household supplies Substances 0.000 description 4
- 235000011167 hydrochloric acid Nutrition 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 3
- 150000001241 acetals Chemical class 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000006356 dehydrogenation reaction Methods 0.000 description 3
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 150000001335 aliphatic alkanes Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 235000018417 cysteine Nutrition 0.000 description 2
- 150000001945 cysteines Chemical class 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 2
- 230000000886 photobiology Effects 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 235000015393 sodium molybdate Nutrition 0.000 description 2
- 238000013319 spin trapping Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 description 1
- 238000010485 C−C bond formation reaction Methods 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- LOMVENUNSWAXEN-UHFFFAOYSA-N Methyl oxalate Chemical compound COC(=O)C(=O)OC LOMVENUNSWAXEN-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- SJUCACGNNJFHLB-UHFFFAOYSA-N O=C1N[ClH](=O)NC2=C1NC(=O)N2 Chemical compound O=C1N[ClH](=O)NC2=C1NC(=O)N2 SJUCACGNNJFHLB-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 230000006315 carbonylation Effects 0.000 description 1
- 238000005810 carbonylation reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000006735 epoxidation reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/48—Preparation of compounds having groups
- C07C41/50—Preparation of compounds having groups by reactions producing groups
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
- B01J23/68—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/682—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium, tantalum or polonium
-
- 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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/043—Sulfides with iron group metals or platinum group metals
-
- 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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/043—Sulfides with iron group metals or platinum group metals
- B01J27/045—Platinum group metals
-
- 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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/047—Sulfides with chromium, molybdenum, tungsten or polonium
- B01J27/051—Molybdenum
-
- 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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/047—Sulfides with chromium, molybdenum, tungsten or polonium
- B01J27/051—Molybdenum
- B01J27/0515—Molybdenum with iron group metals or platinum group metals
-
- 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
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/185—Phosphorus; Compounds thereof with iron group metals or platinum group metals
- B01J27/1853—Phosphorus; Compounds thereof with iron group metals or platinum group metals with iron, cobalt or nickel
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/32—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of -OH groups
- C07C29/34—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of -OH groups by condensation involving hydroxy groups or the mineral ester groups derived therefrom, e.g. Guerbet reaction
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
一种光催化甲醇转化合成甲缩醛和乙二醇的方法是将修饰助催化剂的半导体光催化剂加入到无水甲醇中,并加入浓酸,在磁力或机械搅拌下通入氮气等惰性气氛,充分置换体系中的氧气后,开启汞灯或者氙灯或者LED灯进行反应1‑100h,将甲醇一步法转化为甲缩醛和乙二醇,经固液分离后,再将甲缩醛与乙二醇和原料甲醇分离即分别得到甲缩醛和乙二醇。本发明具有工艺简单、转化率高、选择性好、成本低廉以及环境友好的优点。
Description
技术领域
本发明属于一种合成甲缩醛和乙二醇的方法,具体地说涉及一种光催化甲醇转化合成甲缩醛和乙二醇的方法。
背景技术
能源和环境问题是社会可持续发展的永恒主题。光催化是一种绿色合成路线,光催化有机合成通常在常温、常压下进行,易操作,一般不会产生二次污染,光催化技术已经应用在聚合、烯烃的环氧化、羰基化等有机反应中,并取得了丰富的成果。虽然目前存在反应转化率低,产物选择性差等原因,至今还没有一项光催化合成技术实现工业化,但作为一种快速发展的新兴技术,光催化合成涉及到很多的自由基反应机理,能够大大简化目标产物的合成路线,且容易得到一些常规方法很难得到的精细化工产品,具有广阔的应用前景。
甲缩醛,又称二甲氧基甲烷,是甲醇的下游产品。甲缩醛理化性能优良,具有良好的溶解性、低沸点、与水相溶性好,可广泛应用于化妆品、药品、家庭用品、杀虫剂、橡胶工业、油漆、油墨、清洁剂等产品中,还可替代氟利昂,减少挥发性有机物排放,以及作为汽油和柴油的添加剂等。目前,比较成熟的合成甲缩醛的方法是以甲醇和甲醛为原料,在酸催化作用下进行缩合反应获得的。制备过程中无机酸的使用容易造成反应设备的腐蚀以及酸性废水排放引起的环境污染问题。
乙二醇,俗称甘醇,是最简单的二元醇。作为一种重要的有机化工原料,应用于聚酯纤维、塑料、防冻液、精细化学品、纳米粒子制备等领域,用途十分广泛。我国作为世界上最大的乙二醇消费国,进口量逐年上升。乙二醇的生产主要采用以乙烯为原料的石油路线,即环氧乙烷催化水合技术,其具有技术成熟,应用面广等优点,但此路线依赖石油资源,过程水耗能耗大、成本较高,且我国石油短缺,石油路线乙二醇的供给严重不足,产量增幅有限。煤制乙二醇路线近年来在开发和应用上也取得了一定突破,发展了草酸二甲酯加氢合成乙二醇新技术。但无论是石油路线还是以煤为原料,由于多步骤的反应过程以及苛刻的反应条件,从根本上并未达到节约能源、环境友好的要求。
甲醇是结构最简单的饱和一元醇,价廉易得。采用光催化方式,将甲醇偶联转化为乙二醇具有环境友好等优势。1984年日本科学家Yanagida等[胶质硫化锌表面光催化产氢的同时实现碳碳键偶联,《化学会化学通讯》,1984年,第21页,(Photocatalytic Carbon-Carbon Bond Formation with Concurrent Hydrogen Evolution on Colloidal ZincSulphide,J.Chem.Soc.,Chem.Commun.,1984,21-22)]发现,半导体ZnS为催化剂,在高压汞灯照射下,甲醇分子可与光生空穴作用而在α-碳上脱氢形成相应的羟甲基自由基,脱附于催化剂表面,在液相中经C-C偶联形成乙二醇,但其产物选择性低,且光催化剂易腐蚀。1989年,Crabtree等报道,利用汞灯光敏化作用同样可以选择性氧化甲醇生成·CH2OH,并与环己烷交叉C-C偶联形成羟甲基环己烷,同时有乙二醇的生成[通过交叉脱氢二聚实现规模性烷烃功能,《化学信息》,1989年,第20卷,30期(Alkane Functionalization on aPreparative Scale by Mercury-Photosensitized Cross-Dehydrodimerization,ChemInform,1989,20(32))]。Shimizu等发现N2气氛下的甲醇中滴加H2O2溶液,在波长为253.7nm的低压汞灯照射下合成了乙二醇,如果使用光强更强的KrF激光照射反应液,光量子效率最高可以实现94%[过氧化氢存在下光诱导甲醇选择性合成乙二醇,《化学通讯》,1989年,第20卷,第333页。(Photoinduced Selective Synthesis of Ethylyne Glycolfrom Methanol in the Presence of Hydrogen Peroxide,Chemistry Letters,1989,20(36):333-334)]。以上报道中,所使用的均为特殊远紫外光源或实验技术,在实际应用中受到极大限制。令人欣喜的是,研究者通过使用光催化剂,利用一般光源同样将甲醇直接催化脱氢偶联合成了乙二醇。中科院大连化物所的Chen等人通过优化反应体系的pH及温度等,将产物选择性提高到了95%,同时,他们还通过顺磁共振技术检测到了·OH,说明了在这一反应过程中存在·OH脱氢使甲醇生成乙二醇[自旋捕获技术研究硫化锌光催化甲醇水溶液高效产氢合成乙二醇,《光化学和光生物学A:化学》,1993年,第74卷,第85页(HighlyEfficient Hydrogen and Ethylene Glycol Photoproduction from Aqueous MethanolSolution by ZnS and an in situ Spin Trapping Investigation,Journal ofPhotochemistry&Photobiology A Chemistry,1993,74(1):85-89)]。但总的说来,该体系的反应效率较低,而且ZnS催化剂在光照下极易发生光腐蚀。
中国专利CN102070407A公开了一种贵金属负载纳米二氧化钛光催化合成乙二醇的方法,将P25TiO2纳米颗粒通过溶胶-凝胶法制备出纳米球或纳米棒;通过水热法制备出纳米管或纳米棒进行焙烧处理,得到纯锐钛矿、纯金红石,或锐钛矿和金红石不同比例组成的混晶型纳米结构的TiO2;将制备的纳米TiO2加入甲醇-水溶液中,同时加入贵金属源溶液,磁力或机械搅拌下抽真空或通入氮气,充分置换体系中的氧气后,开启功率为10-2000W的紫外灯或可见光源进行反应10-240h。中国专利CN106831331A公布了一种光催化转化甲醇制备乙二醇的方法:将硫化物半导体催化剂或修饰的硫化物半导体催化剂加入到溶剂中,所述溶剂为甲醇或甲醇-水溶液,在充分置换体系中的氧气后,开启灯源进行光催化反应后,即得乙二醇。以硫化物半导体或修饰的硫化物半导体为光催化剂,在可见光照射条件下,光催化反应一定时间后,可以转化为甲醇生产乙二醇。
经检索未发现光催化甲醇转化同时合成甲缩醛和乙二醇的方法。
发明内容
本发明的目的是提供一种性能稳定,成本低廉,对环境友好的光催化甲醇一步法转化合成甲缩醛和乙二醇的方法。
本发明是将半导体光催化剂加入到无水甲醇中,在磁力或机械搅拌下通入氮气,充分置换体系中的氧气后,开启汞灯或者氙灯或者LED等进行反应1-100h,将甲醇一步法转化为甲缩醛和乙二醇。经固液分离后,再将甲缩醛与乙二醇和原料甲醇分离即分别得到甲缩醛和乙二醇。通过光催化剂的作用,在光源照射下,将甲醇一步转化合成了甲缩醛和乙二醇,实现了光催化甲醇的C-C偶联反应。
本方法以甲醇为原料,无需对原料进行预处理,光催化一步转化合成甲缩醛和乙二醇。具有性质稳定、转化率高、选择性好、成本低廉以及环境友好的优点。
本发明光催化甲醇一步法转化合成甲缩醛和乙二醇的反应式如下:
本发明光催化甲醇一步法转化合成甲缩醛和乙二醇的方法,包括如下步骤:
将光催化剂加入到无水甲醇中,并加入浓酸,在磁力或机械搅拌下通入氮气,充分置换体系中的氧气后,开启汞灯、氙灯或者LED灯进行反应1-100h,将甲醇一步法转化为甲缩醛和乙二醇,经固液分离后,再将甲缩醛、乙二醇和原料甲醇分离即分别得到甲缩醛和乙二醇。
所述光催化剂是半导体光催化剂和助剂组成的催化剂。
所述半导体光催化剂是TiO2、NaTaO3、CdS、BiVO4、C3N4、CuO中的一种。
所述助剂是金属、金属硫化物、金属磷化物中的一种,所述助剂的负载量是半导体光催化剂的1wt%-12wt%,助剂负载方式采用常规的溶剂热方法或原位光还原沉积方法。
所述金属为Pt、Pd、Au中的一种。
所述金属硫化物、金属磷化物为非贵金属Ni、Mo、Co的一种或多元金属化合物。
所述光催化剂与反应液质量比为0.05-1:1。
所述浓酸为浓硫酸、浓盐酸中的一种,浓酸与甲醇体积比为0.0001-0.0005:1。
所述灯源选自汞灯、氙灯、LED灯中的一种,功率为50-2000W。
所述产物甲缩醛的选择性为3.55-89.17%,乙二醇选择性为6.38-79.88%。
所述原料甲醇的转化率为0.08-4%。
本发明具有如下优点:
(1)所用甲醇等原料价廉易得,无需预处理,有利于降低成本。
(2)合成工艺流程简单,操作简便,影响因素少,便于控制,重复性好。
(3)合成过程性质稳定,产物选择性好(甲缩醛的选择性为3.55-89.17%,乙二醇选择性为6.38-79.88%),转化率高(甲醇的转化率为0.08-4%)。
(4)合成过程反应条件温和,环境友好。
附图说明
图1是本发明实施例1产物色谱分析图。
具体实施方式
下面通过实施例进一步描述本发明,但未限于所举的实施例。本发明所采用的甲醇等原料无需预处理直接参与反应,产品采用气相色谱分析。
实施例1
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制得的0.2g CdS粉末加入到30mL溶有0.04g Ni(NO3)2·6H2O和0.04g白磷(P4)的乙二胺溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在140℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得Ni2P/CdS光催化剂。取5mg制得的Ni2P/CdS催化剂加入到20mL无水甲醇中,加入10uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的氙灯,在可见光下进行催化反应60h。气相色谱分析表明甲醇的转化率为4%,甲缩醛的选择性为82.93%,乙二醇的选择性为16.66%。
实施例2
将0.2g二氧化钛(P25)加入到50mL甲醇水溶液中(20wt%),充分分散后,按照负载量1wt%加入氯铂酸溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pt纳米颗粒的TiO2。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取6mg制得的1wt%-Pt/TiO2催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的汞灯,催化反应100h。气相色谱分析表明甲醇的转化率为3.08%,甲缩醛的选择性为89.11%,乙二醇的选择性为8.72%。
实施例3
将4.42g Ta2O5与30mL 5M NaOH溶液充分混合,室温下搅拌2h。然后将此混合物转移到50mL水热釜中180℃下反应24h,在空气中冷却至室温。最后将产物离心,并用去离子水和乙醇分别洗涤数次后,置于80℃烘箱中干燥12h即得到产品NaTaO3。将0.2g NaTaO3加入到50mL甲醇水溶液中(20wt%),充分分散后,按照负载量4wt%加入氯金酸溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Au纳米颗粒的NaTaO3。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取2mg 4wt%-Au/NaTaO3催化剂加入到50mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的汞灯,催化反应100h。气相色谱分析表明甲醇的转化率为0.26%,甲缩醛的选择性为44.91%,乙二醇的选择性为6.38%。
实施例4
称取10g尿素置于坩埚内,盖上盖子后放在马弗炉里,以5℃/min的速率升温,在550℃下保持3h,待冷却至室温即得到了淡黄色的C3N4固体粉末,收集起来备用。将0.2gC3N4加入到50mL甲醇水溶液中(20wt%),充分分散后,按照负载量5wt%加入氯化钯溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pd纳米颗粒的C3N4。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取8mg制得的5wt%-Pd/C3N4催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启500W的氙灯,在可见光下进行催化反应20h。气相色谱分析表明甲醇的转化率为2.39%,甲缩醛的选择性为88.74%,乙二醇的选择性为10.53%。
实施例5
取6.0mmol Bi(NO3)3﹒5H2O溶于30mL的浓HNO3溶液中,再取6.0mmolNH4VO3溶解于30mL的2M的氨水中,将前者慢慢加入到后者中,磁力搅拌30min充分反应,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在150℃下保持24h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得黄色BiVO4固体粉末。再将制得的0.2g BiVO4粉末加入到30mL溶有0.02g钼酸钠(Na2MoO6)和0.05g半胱氨酸(L-cysteine)的水溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在200℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得MoS2/BiVO4光催化剂。取5mg制得的MoS2/BiVO4催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启50W的氙灯,在可见光下进行催化反应100h。气相色谱分析表明甲醇的转化率为1.3%,甲缩醛的选择性为83.15%,乙二醇的选择性为14.82%。
实施例6
称取10g尿素置于坩埚内,盖上盖子后放在马弗炉里,以5℃/min的速率升温,在550℃下保持3h,待冷却至室温即得到了淡黄色的C3N4固体粉末,收集起来备用。将0.1g二氧化钛(P25)和0.1gC3N4加入到50mL甲醇水溶液中(20wt%),充分分散后,按照负载量12wt%加入氯铂酸溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pt纳米颗粒的TiO2/C3N4。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取16mg制得的12wt%-Pt/TiO2/C3N4催化剂加入到20mL无水甲醇中,加入10uL浓盐酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启300W的氙灯,催化反应50h。气相色谱分析表明甲醇的转化率为4.0%,甲缩醛的选择性为79.88%,乙二醇的选择性为15.26%。
实施例7
分别称取0.4g氢氧化钠和1.6g硫酸铜配制出0.1M的溶液,并加入乙醇调节分散体系,在磁力搅拌条件下充分混合反应后,得到黑色沉淀。过滤洗涤干燥后得到氧化铜粉末。再将制的0.2g CuO粉末加入到30mL溶有0.1g NiCl2·6H2O和0.3g L-cysteine的水溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在200℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得5wt%-NiS/CuO光催化剂。取5mg制得的5wt%-NiS/CuO催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的汞灯,在可见光下进行催化反应30h。气相色谱分析表明甲醇的转化率为0.58%,甲缩醛的选择性为88.39%,乙二醇的选择性为10.02%。
实施例8
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制的0.2g CdS粉末加入到30mL溶有0.02g Ni(NO3)2﹒6H2O,0.02g钼酸钠(NaMo2O4﹒2H2O)和0.05g半胱氨酸(L-cysteine)的水溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在200℃下保持24h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得NiMoS/CdS光催化剂。取5mg制得的NiMoS/CdS催化剂加入到20mL无水甲醇中,加入2uL浓盐酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启300W的氙灯,在可见光下进行催化反应24h。气相色谱分析表明甲醇的转化率为2.8%,甲缩醛的选择性为3.55%,乙二醇的选择性为17.28%。
实施例9
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制得的0.2g CdS粉末加入到30mL溶有0.04g Co(NO3)2﹒6H2O和0.04g白磷(P4)的乙二胺溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在140℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得Co2P/CdS光催化剂。取5mg制得的Co2P/CdS催化剂加入到20mL无水甲醇中,加入5uL浓盐酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的氙灯,在可见光下进行催化反应24h。气相色谱分析表明甲醇的转化率为0.08%,甲缩醛的选择性为89.17%,乙二醇的选择性为8.68%。
实施例10
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制的0.2g CdS粉末加入到50mL乳酸水溶液中(30wt%),充分分散后,按照负载量3wt%加入氯铂酸溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pt纳米颗粒的CdS。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取5mg制得的3wt%-Pt/CdS催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的氙灯,在可见光下进行催化反应15h。气相色谱分析表明甲醇的转化率为0.1%,甲缩醛的选择性为85.31%,乙二醇的选择性为9.83%。
实施例11
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制的0.2g CdS粉末加入到30mL溶有0.1g NiCl2·6H2O和0.3g L-cysteine的水溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在200℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得5wt%-NiS/CdS光催化剂。取5mg制得的5wt%-NiS/CdS催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的汞灯,在可见光下进行催化反应30h。气相色谱分析表明甲醇的转化率为0.58%,甲缩醛的选择性为88.39%,乙二醇的选择性为10.02%。
实施例12
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制得的0.2g CdS粉末加入到30mL溶有0.2g CoCl2·6H2O和0.3g L-cysteine的水溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在200℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得CoS/CdS光催化剂。取5mg制得的CoS/CdS催化剂加入到20mL无水甲醇中,加入5uL浓盐酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启300W的氙灯,在可见光下进行催化反应24h。气相色谱分析表明甲醇的转化率为0.12%,甲缩醛的选择性为78.17%,乙二醇的选择性为10.68%。
实施例13
将10mmol的Cd(NO3)2·4H2O和10mmol Na2S的分别加入到60mL的去离子水中,超生溶解后将溶液转移到100mL高压反应釜中,以5℃/min的速率升温,在180℃下保持24h。离心洗涤数次后,在60℃真空烘箱中放置过夜,烘干研磨后即得CdS纳米颗粒。再将制的0.2gCdS粉末加入到30mL溶有0.04g Ni(NO3)2﹒6H2O和0.04g白磷(P4)的乙二胺溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在140℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得Ni2P/CdS光催化剂。取8mg制得的Ni2P/CdS催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启100W的LED灯,在可见光下进行催化反应50h。气相色谱分析表明甲醇的转化率为1.7%,甲缩醛的选择性为79.88%,乙二醇的选择性为15.26%。
实施例14
称取10g尿素置于坩埚内,盖上盖子后放在马弗炉里,以5℃/min的速率升温,在550℃下保持3h,待冷却至室温即得到了淡黄色的C3N4固体粉末,收集起来备用。将0.1g二氧化钛(P25)和0.1gC3N4加入到50mL甲醇水溶液中(20wt%),充分分散后,按照负载量6wt%加入氯化钯溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pd纳米颗粒的TiO2/C3N4。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取10mg制得的6wt%-Pd/TiO2/C3N4催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启2000W的氙灯,催化反应12h。气相色谱分析表明甲醇的转化率为3.8%,甲缩醛的选择性为78.90%,乙二醇的选择性为14.35%。
实施例15
将10mmol Cd(NO3)2·4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得CdS固体粉末。再将制得的0.2g CdS粉末加入到30mL溶有0.02g Co(NO3)2·6H2O和0.02g白磷(P4)的乙二胺溶液中,充分分散后,置于60ml的高压均相反应釜中,以5℃/min的速率升温,在140℃下保持12h。离心洗涤数次,在60℃真空烘箱中放置过夜,即得Co2P/CdS光催化剂。取5mg制得的Co2P/CdS催化剂加入到20mL无水甲醇中,加入5uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启300W的氙灯,在可见光下进行催化反应100h。气相色谱分析表明甲醇的转化率为4%,甲缩醛的选择性为81.53%,乙二醇的选择性为15.36%。
实施例16
将10mmol Cd(NO3)2﹒4H2O和30mmol硫脲(CN2H4S)分别溶解于60mL乙二胺中,充分溶解后混合均匀,然后置于100mL的高压均相反应釜中,以5℃/min的速率升温,在160℃下保持48h。离心洗涤至中性,在60℃真空烘箱中放置过夜。烘干研磨后即得一维CdS固体粉末。再将制得的0.2g CdS粉末加入到50mL乳酸水溶液中(30wt%),充分分散后,按照负载量1wt%加入氯铂酸溶液,搅拌并通入氮气。用200W氙灯光还原3h,得到负载Pt纳米颗粒的CdS。离心洗涤数次,在60℃真空烘箱中放置过夜备用。取5mg制得的1wt%-Pt@CdS光催化剂加入到20mL无水甲醇中,加入4uL浓硫酸,在搅拌下通入惰性气体氮气充分置换体系中的氧气后,开启2000W的汞灯,催化反应12h。气相色谱分析表明甲醇的转化率为3.6%,甲缩醛的选择性为77.65%,乙二醇的选择性为16.35%。
Claims (9)
1.一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于包括如下步骤:
将光催化剂加入到无水甲醇中,并加入浓酸,在磁力或机械搅拌下通入氮气,充分置换体系中的氧气后,开启汞灯、氙灯或LED灯进行反应1-100h,将甲醇一步法转化为甲缩醛和乙二醇,经固液分离后,再将甲缩醛、乙二醇和原料甲醇分离即分别得到甲缩醛和乙二醇。
2.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述光催化剂是半导体光催化剂和助剂组成的催化剂。
3.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述半导体光催化剂是TiO2、NaTaO3、CdS、BiVO4、C3N4、CuO中的一种。
4.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述助剂是金属、金属硫化物、金属磷化物中的一种,所述助剂的负载量是半导体光催化剂的1wt%-12wt%。
5.如权利要求4所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述金属为Pt、Pd、Au中的一种。
6.如权利要求4所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述金属硫化物、金属磷化物为非贵金属Ni、Mo、Co的一种或多元金属化合物。
7.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述光催化剂与反应液质量比为0.05-1:1。
8.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述浓酸为浓硫酸、浓盐酸中的一种,浓酸与甲醇体积比为0.0001-0.0005:1。
9.如权利要求1所述的一种光催化甲醇转化合成甲缩醛和乙二醇的方法,其特征在于所述灯源选自汞灯、氙灯或LED灯的功率为50-2000W。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711084553.XA CN107739302A (zh) | 2017-11-07 | 2017-11-07 | 一种光催化甲醇转化合成甲缩醛和乙二醇的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711084553.XA CN107739302A (zh) | 2017-11-07 | 2017-11-07 | 一种光催化甲醇转化合成甲缩醛和乙二醇的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107739302A true CN107739302A (zh) | 2018-02-27 |
Family
ID=61234155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711084553.XA Pending CN107739302A (zh) | 2017-11-07 | 2017-11-07 | 一种光催化甲醇转化合成甲缩醛和乙二醇的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107739302A (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109911945A (zh) * | 2019-04-28 | 2019-06-21 | 福州大学 | 一种基于肖特基结的二硫化钴/硫化镉复合材料的制备及其应用 |
CN110038589A (zh) * | 2019-04-24 | 2019-07-23 | 辽宁大学 | 一种具有双助催剂的光催化剂(Cu,Pd)-NiGa2O4/BiVO4及其应用 |
CN110746271A (zh) * | 2019-09-23 | 2020-02-04 | 厦门大学 | 一种光催化甲醇脱氢偶联制备乙二醇的方法 |
CN112441884A (zh) * | 2020-11-30 | 2021-03-05 | 厦门大学 | 一种钽基半导体光催化甲醇偶联制乙二醇的方法 |
CN112657532A (zh) * | 2021-01-06 | 2021-04-16 | 山东科技大学 | 一种VO2/g-C3N4复合光催化剂及其制备方法和应用 |
CN113024352A (zh) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | 一种光催化甲醇转化制备乙二醇的方法 |
CN115254171A (zh) * | 2022-08-24 | 2022-11-01 | 江苏金聚合金材料有限公司 | 一种具有空心核壳结构的高分散铜基酯加氢催化剂及其制备方法和应用 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103864576A (zh) * | 2014-03-28 | 2014-06-18 | 厦门大学 | 一种光催化甲醛转化制备乙二醇的方法 |
-
2017
- 2017-11-07 CN CN201711084553.XA patent/CN107739302A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103864576A (zh) * | 2014-03-28 | 2014-06-18 | 厦门大学 | 一种光催化甲醛转化制备乙二醇的方法 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110038589A (zh) * | 2019-04-24 | 2019-07-23 | 辽宁大学 | 一种具有双助催剂的光催化剂(Cu,Pd)-NiGa2O4/BiVO4及其应用 |
CN110038589B (zh) * | 2019-04-24 | 2021-03-05 | 辽宁大学 | 一种具有双助催剂的光催化剂(Cu,Pd)-NiGa2O4/BiVO4及其应用 |
CN109911945A (zh) * | 2019-04-28 | 2019-06-21 | 福州大学 | 一种基于肖特基结的二硫化钴/硫化镉复合材料的制备及其应用 |
CN110746271A (zh) * | 2019-09-23 | 2020-02-04 | 厦门大学 | 一种光催化甲醇脱氢偶联制备乙二醇的方法 |
CN113024352A (zh) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | 一种光催化甲醇转化制备乙二醇的方法 |
CN113024352B (zh) * | 2019-12-09 | 2022-06-14 | 中国科学院大连化学物理研究所 | 一种光催化甲醇转化制备乙二醇的方法 |
CN112441884A (zh) * | 2020-11-30 | 2021-03-05 | 厦门大学 | 一种钽基半导体光催化甲醇偶联制乙二醇的方法 |
CN112441884B (zh) * | 2020-11-30 | 2022-06-21 | 厦门大学 | 一种钽基半导体光催化甲醇偶联制乙二醇的方法 |
CN112657532A (zh) * | 2021-01-06 | 2021-04-16 | 山东科技大学 | 一种VO2/g-C3N4复合光催化剂及其制备方法和应用 |
CN112657532B (zh) * | 2021-01-06 | 2022-09-23 | 山东科技大学 | 一种VO2/g-C3N4复合光催化剂及其制备方法和应用 |
CN115254171A (zh) * | 2022-08-24 | 2022-11-01 | 江苏金聚合金材料有限公司 | 一种具有空心核壳结构的高分散铜基酯加氢催化剂及其制备方法和应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107739302A (zh) | 一种光催化甲醇转化合成甲缩醛和乙二醇的方法 | |
López et al. | Comparative study of alcohols as sacrificial agents in H2 production by heterogeneous photocatalysis using Pt/TiO2 catalysts | |
Zhang et al. | CdS/ZnO: a multipronged approach for efficient reduction of carbon dioxide under visible light irradiation | |
CN105214656B (zh) | 金纳米团簇‑金纳米粒子‑二氧化钛复合光催化剂及应用 | |
Zhang et al. | Increasing the activity and selectivity of TiO2-supported Au catalysts for renewable hydrogen generation from ethanol photoreforming by engineering Ti3+ defects | |
Song et al. | Photothermocatalytic hydrogen evolution over Ni2P/TiO2 for full-spectrum solar energy conversion | |
Cheng et al. | Green synthesis of plasmonic Ag nanoparticles anchored TiO2 nanorod arrays using cold plasma for visible-light-driven photocatalytic reduction of CO2 | |
CN106831331B (zh) | 一种光催化转化甲醇制备乙二醇的方法 | |
HUANG et al. | Production of jet fuel intermediates from furfural and acetone by aldol condensation over MgO/NaY | |
He et al. | NH2-MIL-125 (Ti) encapsulated with in situ-formed carbon nanodots with up-conversion effect for improving photocatalytic NO removal and H2 evolution | |
CN105478142B (zh) | 一种硫化铟介孔空心微球光催化剂及其制备方法和用途 | |
Zhou et al. | Light-driven integration of the reduction of nitrobenzene to aniline and the transformation of glycerol into valuable chemicals in water | |
CN104016825A (zh) | 一种利用太阳光和光热催化剂直接转化二氧化碳制备有机燃料的技术 | |
Zhu et al. | Visible-light-driven photocatalytic oxidation of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid over plasmonic Au/ZnO catalyst | |
CN103864576B (zh) | 一种光催化甲醛转化制备乙二醇的方法 | |
Karimi Estahbanati et al. | Current developments and future trends in photocatalytic glycerol valorization: photocatalyst development | |
CN104722293A (zh) | 一种可见光响应的负载型Bi2WO6/Bi2O3异质结光催化剂及制备方法 | |
CN105664929B (zh) | 一种含有贵金属的纳米片及其制备方法 | |
CN107827709A (zh) | 一种光催化乙醇转化合成巴豆醇的方法 | |
Jafarpour et al. | Aerobic benzylic C–H oxidation catalyzed by a titania-based organic–inorganic nanohybrid | |
CN106362742A (zh) | 一种Ag/ZnO纳米复合物及其制备方法和应用 | |
CN106111179B (zh) | 一种小尺寸氮掺杂石墨烯光催化剂及其制备方法和应用 | |
CN105618142B (zh) | 一种Pd@MIL-100(Fe)及其制备方法与应用 | |
CN107362792A (zh) | 一种钛酸锶/铌酸锡复合纳米材料的制备方法 | |
CN108311149A (zh) | 一种Fe2O3基光催化复合材料及其制备方法 |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180227 |
|
RJ01 | Rejection of invention patent application after publication |