CN108114745A - A kind of Sulfur-resistant catalytic-combustioncatalyst catalyst and preparation method thereof - Google Patents
A kind of Sulfur-resistant catalytic-combustioncatalyst catalyst and preparation method thereof Download PDFInfo
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- CN108114745A CN108114745A CN201611072019.2A CN201611072019A CN108114745A CN 108114745 A CN108114745 A CN 108114745A CN 201611072019 A CN201611072019 A CN 201611072019A CN 108114745 A CN108114745 A CN 108114745A
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- molecular sieve
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- 239000003054 catalyst Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 19
- 239000011593 sulfur Substances 0.000 title claims abstract description 19
- 239000002808 molecular sieve Substances 0.000 claims abstract description 85
- 238000000576 coating method Methods 0.000 claims abstract description 43
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 241000264877 Hippospongia communis Species 0.000 claims description 36
- 239000000919 ceramic Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 28
- 239000011159 matrix material Substances 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims description 18
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 14
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 13
- 229910052684 Cerium Inorganic materials 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052763 palladium Inorganic materials 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 238000006467 substitution reaction Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 10
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- 229910052878 cordierite Inorganic materials 0.000 claims description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical group [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052718 tin Inorganic materials 0.000 claims description 8
- 239000011135 tin Substances 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 claims description 6
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical class [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 4
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- 159000000013 aluminium salts Chemical class 0.000 claims description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 3
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 238000001027 hydrothermal synthesis Methods 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
- 239000004332 silver Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 claims 2
- 239000012266 salt solution Substances 0.000 claims 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 241000416536 Euproctis pseudoconspersa Species 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 238000001354 calcination Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 238000007084 catalytic combustion reaction Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract description 14
- 239000010815 organic waste Substances 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 4
- 206010013786 Dry skin Diseases 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 150000002823 nitrates Chemical class 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 4
- HDUMBHAAKGUHAR-UHFFFAOYSA-J titanium(4+);disulfate Chemical class [Ti+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O HDUMBHAAKGUHAR-UHFFFAOYSA-J 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052680 mordenite Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- YFVKHKCZBSGZPE-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-2-(propylamino)propan-1-one Chemical compound CCCNC(C)C(=O)C1=CC=C2OCOC2=C1 YFVKHKCZBSGZPE-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- QGJOPFRUJISHPQ-UHFFFAOYSA-N carbon disulfide Substances S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- LJSQFQKUNVCTIA-UHFFFAOYSA-N diethyl sulfide Chemical compound CCSCC LJSQFQKUNVCTIA-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/89—Silicates, aluminosilicates or borosilicates of titanium, zirconium or hafnium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of preparation method of Sulfur-resistant catalytic-combustioncatalyst catalyst, including（1）It is prepared by Ti Si molecular sieves complex sol；（2）It is prepared by Ti Si molecular sieves composite coating；（3）Load active component.Sulfur-resistant catalytic-combustioncatalyst catalyst of the present invention is prepared using the invention described above method.Preparation process of the present invention is simple, and prepared catalyst coating firmness is high, has good catalytic combustion activity and stability to sulfur-containing organic waste gas, suitable for the direct processing of sulfur-containing organic waste gas.
Description
Technical field
The present invention relates to catalyst for catalytic combustion, and in particular to a kind of Sulfur-resistant catalytic-combustioncatalyst catalyst and preparation method thereof.
Background technology
Volatile organic matter（VOCs）A kind of main atmosphere pollution, result from petroleum refining industry and electronics,
Printing, coating processing industry.The organic exhaust gas largely discharged seriously endangers the health of the mankind.Production by Catalytic Combustion Process have low energy consumption and
The characteristics of by-product is nontoxic and more paid attention to.But in PETROLEUM PROCESSING industry and downstream Fine Chemical, such as oil
Contain hydrogen sulfide and methyl mercaptan, ethyl mercaptan, methyl sulfide, ethyl sulfide, carbon disulfide, methyl disulfide in Love psychology Treatment stations exhaust gas
Wait sulfurous gas；Contain CH in the exhaust gas that pharmaceutical factory, insecticide factory and chemical fibre factory etc. are discharged in production3SH、CH3CH2SH、CS2Deng
Sulfurous pollutants.These gases with foul smelling seriously stimulate the olfactory organ of people, cause unhappy or detest and to human body
Health has serious harm.
Common catalyzed combustion catalyst is generally using aluminium oxide as carrier, and aluminium oxide is in SO2And under excess oxygen easily
Sulfation and cause catalyst activity reduction or even inactivation.The pre- desulfurization of reaction gas makes investment and the operating cost of catalytic combustion system
With increase, therefore, exploitation sulfur-tolerant type catalyst for catalytic combustion has a very important significance.
Catalyst for catalytic combustion is usually honeycomb ceramic type structure, i.e., using ceramic honey comb as matrix, coated carrier applies
Layer, then supported catalyst active component again.It is catalyzed the effect of burning, the close phase of bond strength with catalyst coat and matrix
Close, if coating is low with the bond strength of matrix, coating high-speed air-flow wash away and thermal shock under be easily cracked, shell
Fall, cause the inactivation of catalyst.Therefore, it is the key that ensure that catalyst is run steadily in the long term that coating is combined closely with matrix.
CN1049299A discloses a kind of sulfur-containing organic waste gas catalyst to burned, with sulfuric acid treatment modified natural modenite
For carrier, V2O5For main active component, a small amount of Pt, Pd are added, in addition also containing a small amount of cobalt, manganese, molybdenum, nickel, potassium, sodium oxidation
One or more of object makees co-catalyst.The catalyst has sulfurous organic compound, CO, hydro carbons and containing oxygen derivative apparent
Clean-up effect.But the catalyst carrier is natural mordenite zeolite, natural mordenite zeolite is made of elements such as sial, long-term
During use, catalyst surface can gradually vulcanize and make active decline；In addition, reaction temperature needed for the catalyst is high, entrance
Temperature just has sulfurous organic compound good treatment effect at 320 DEG C or more.
CN1488435A discloses a kind of catalyst for catalytic combustion and preparation method thereof.The invention is by aluminum nitrate and ammonia
Water mixing preparation is into suspension, then is proportionally added into the aqueous solution of Ludox and alkali nitrates, forms coating liquid.This method
The firmness of carrier coating is improved, but the invention requires slurries diluter, therefore the load capacity of carrier coating is than relatively low.
At present, organic waste gas catalytic combustion catalyst is mostly using noble metal as active component, and noble metal is as activity
The advantages of catalyst for catalytic combustion of component is active high has common organic exhaust gas very high removal rate, but when in exhaust gas
During with a certain amount of sulfide, the noble metal active component of the catalyst is easy to testing sulphide interaction and inactivates, so as to reduce
Even lose organic waste gas catalytic combustion treatment effect.Therefore, the noble metal with resistance to SO_2 is developed as active component
Catalyst for catalytic combustion is of great significance.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of using composite Ti-Si- molecular sieves as complex carrier coating
Sulfur-resistant catalytic-combustioncatalyst catalyst and preparation method thereof.Preparation process of the present invention is simple, and prepared catalyst coat firmness is high,
There is good catalytic combustion activity and stability to sulfur-containing organic waste gas, suitable for the direct processing of sulfur-containing organic waste gas.
Sulfur-resistant catalytic-combustioncatalyst catalyst of the present invention selects ceramic honey comb matrix, impregnates and applies in ceramic honey comb matrix channel surfaces
Ti-Si- molecular sieve composite coatings are covered, carrier dip loading active component Pt, Pd, Ce and Ag after coating.With ceramic honey comb matrix
On the basis of quality, the Ti-Si- molecular sieves composite coating proportion is 5wt%-20wt%；Wherein TiO2Proportion is
2wt%-10wt%, SiO2Proportion is 1wt%-5wt%, and molecular sieve proportion is 1wt%-8wt%；The active component Pt institutes
Accounting example be 0.01wt%-0.1wt%, Pd proportions be 0.01wt%-0.1wt%, Ce proportions be 1wt%-5wt%, Ag institutes
Accounting example is 0.1wt-1wt%.
In catalyst of the present invention, the ceramic honey comb matrix is cordierite honeycomb ceramic matrix, and the molecular sieve is ZSM-5
Molecular sieve, it is preferred to use the ZSM-5 molecular sieve of metal isomorphous substitution replaces metal part or all displaces ZSM-5 molecular sieve
In Al, the displacement metal is one or more of copper, tin, zinc, gallium etc., Si/（Replace metal+Al）Molar ratio is
10-150 is preferably 20-100.
Sulfur-resistant catalytic-combustioncatalyst catalyst of the present invention selects ceramic honey comb matrix, coats the compound painting of Ti-Si- molecular sieves first
Layer, then dip loading active component Pt, Pd, Ce and Ag.Specifically include following steps：
（1）The preparation of Ti-Si- molecular sieve complex sols
Titanium sulfate, Ludox are added in salpeter solution, adds in dispersant, expanding agent and stabilizer, stirring while agitating
After uniformly, molecular sieve is slowly added into the above-mentioned solution being vigorously stirred, ageing 6-24 obtains stable Ti-Si- points when small
Son sieve complex sol.The concentration of the salpeter solution is 0.5-5.0mol/L, and the mass volume ratio of titanium sulfate and salpeter solution is
1g:4mL.The mass ratio of the titanium sulfate and Ludox is 5:1-1:1, the mass ratio of titanium sulfate and molecular sieve is 10:1-5:1,
The mass ratio of titanium sulfate and dispersant is 40:1-5:1, the mass ratio of titanium sulfate and expanding agent is 40:1-10:1, titanium sulfate with it is steady
The mass ratio for determining agent is 40:1-10:1.The Ludox is industrial grade silica sol, SiO2Content is 20wt%-30wt%, pH value
8.5-10.The dispersant is urea, and expanding agent is one kind in polyethylene glycol, polyacrylamide and carboxymethyl cellulose etc.
Or it is several, stabilizer is ethanolamine or acetylacetone,2,4-pentanedione.
Step（1）The molecular sieve is preferably ZSM-5 molecular sieve, more preferably uses the ZSM-5 molecules of metal isomorphous substitution
Sieve replaces metal part or all displaces the Al in ZSM-5 molecular sieve, and the displacement metal is in copper, tin, zinc, gallium etc.
One or more, Si/（Replace metal+Al）Molar ratio is 10-150, is preferably 20-100.ZSM-5 points of metal isomorphous substitution
Son sieve is prepared using hydrothermal synthesis method, is specially：The desired amount of silicon source, silicon source are taken, solution is made with distillation water dissolution respectively, it will
After two kinds of solution are mixed with the oxide of displacement metal, strong stirring, while template needed for addition, pH value is adjusted in 9-11
In the range of, it obtains white gels and stops stirring；Gel is moved into autoclave, crystallization 20-80 is small at a temperature of 50-300 DEG C
When, obtain the ZSM-5 molecular sieve of metal isomorphous substitution after products therefrom washing, filtering.Wherein, silicon source is sodium silicate salt, water glass
One kind in glass, Ludox or metasilicate；Silicon source is one kind in aluminium salt or aluminate；Displacement metal is copper, tin, zinc, gallium
Deng, be preferably tin；Template is one kind in n-butylamine, triethylamine, 4-propyl bromide or ethylenediamine.
（2）The preparation of Ti-Si- molecular sieve composite coatings
In the Ti-Si- molecular sieve complex sols that the immersion of ceramic honey comb matrix is prepared, after taking-up, hole is blown away with compressed air
Raffinate in road obtains scribbling the honeycomb ceramic carrier of Ti-Si- molecular sieve coatings after drying, roasting.The ceramic honey comb matrix is excellent
Elect cordierite honeycomb ceramic matrix as.
（3）Load active component
Being coated with the honeycomb ceramic carriers of Ti-Si- molecular sieve coatings, to be impregnated into the active component salt containing cerium, silver, platinum, palladium molten
In liquid, raffinate is blown away after taking-up, Sulfur-resistant catalytic-combustioncatalyst catalyst is obtained after dry, roasting.The salting liquid is active component
The solution such as nitrate, chlorate, preferably nitrate solution.Wherein, the concentration of cerous nitrate is 15-45g/L, the concentration of silver nitrate is
2-10g/L, the concentration of platinum nitrate are 0.45-5 g/L, and the concentration of palladium nitrate is 0.45-5g/L.
In the present invention, step（2）、（3）The drying temperature is 80-200 DEG C, when drying time is 5-24 small, roasting
Temperature is 400-600 DEG C, when roasting time is 2-5 small.
Compared with prior art, the invention has the advantages that：
（1）Dispersant and stabilizer are added in during Ti-Si- molecular sieve complex sols are prepared, make titanium colloidal sol, Ludox and is divided
Son sieve is fully dispersed, uniformly mixed and stablizes, and coating is more secured.Expanding agent is added in Ti-Si- molecular sieve complex sols,
Make carrier coating that there is porous structure, the dispersion degree of active component can be improved, reduce the dosage of noble metal, while inhibit sulfuric acid
The deposition of salt, beneficial to the raising of sulfur tolerance and thermal stability.
（2）Using the specific active metal component of Ti-Si- molecular sieve composite carrier loads, the surface of catalyst is enhanced
Acidity improves catalytic combustion activity and resistance to SO_2 of the catalyst to organic matter.
（3）Using Ti-Si- molecular sieve complex carriers, wherein molecular sieve selects specific metal in ZSM-5 molecular sieve
Al carries out isomorphous substitution, improves the activity and Sulfur tolerance of catalyst combustion reaction.
Specific embodiment
The specific embodiment of the present invention will carry out illustrative explanation, Er Qiesuo in more detail by following embodiment
State the limitation that embodiment should not be construed as the scope of the invention.In the present invention, wt% is mass fraction.
The load capacity of Ti-Si- molecular sieve coatings is front and rear by weighing cordierite honeycomb ceramic matrix load in the present invention
Weight obtains.The content of active component Pt, Pd, Ce and Ag pass through ICP（Inductively coupled plasma spectrum generator）It is detected.
Embodiment 1
（1）The preparation of Ti-Si- molecular sieve complex sols：It takes 450 grams of titanium sulfates and 300g Ludox is added to 1800mL concentration and is
In 0.6mol/L salpeter solutions, 20g urea, 20g polyacrylamides and 15g acetylacetone,2,4-pentanediones are added while agitating.Stirring is equal
After even, 60 grams of ZSM-5 molecular sieves are slowly added into the above-mentioned solution being vigorously stirred, when ageing 24 is small, obtain transparent Ti-
Si- molecular sieve complex sols.
（2）The preparation of Ti-Si- molecular sieve composite coatings：Cordierite honeycomb matrix is immersed into step（1）The Ti- prepared
In Si- molecular sieve complex sols, after taking-up, raffinate in duct is blown away with compressed air, when 100 DEG C of dryings 12 are small, 600 DEG C of roastings
Burn 2 it is small when, you can obtain scribbling the carrier of Ti-Si- molecular sieve composite coatings.
（3）Load active component：By step（2）Obtained honeycomb ceramic carrier 20g/L cerous nitrates, 5g/L silver nitrates,
It is impregnated 5 minutes in 2g/L platinum nitrates and 2g/L palladium nitrate solutions, takes out, blow away raffinate, when 110 DEG C of dryings 12 are small, 500 DEG C of roastings
4 it is small when, you can be made catalyst for catalytic combustion.
On the basis of ceramic honey comb matrix, Ti-Si- molecular sieve composite coating proportions are the catalyst of preparation
10.6wt%, wherein TiO2Proportion is 8wt%, SiO2Proportion is 1.6wt%, and molecular sieve proportion is 1wt%；Activity
Component Pt proportions are 0.05wt%, and Pd proportions are 0.06wt%, and Ag proportions are 0.2wt%, and Ce proportions are
3wt%。
Embodiment 2
（1）The preparation of Ti-Si- molecular sieve complex sols：It takes 450 grams of titanium sulfates and 400g Ludox is added to 1800mL concentration and is
In 2mol/L salpeter solutions, 40g urea, 30g polyacrylamides and 30g acetylacetone,2,4-pentanediones are added while agitating.It stirs evenly
Afterwards, 70 grams of ZSM-5 molecular sieves are slowly added into the above-mentioned solution being vigorously stirred, when ageing 24 is small, obtain transparent Ti-Si-
Molecular sieve complex sol.
（2）The preparation of Ti-Si- molecular sieve composite coatings：Cordierite honeycomb matrix is immersed into step（1）The Ti- prepared
In Si- molecular sieve complex sols, after taking-up, raffinate in duct is blown away with compressed air, when 120 DEG C of dryings 8 are small, 550 DEG C of roastings
Burn 4 it is small when, you can obtain scribbling the carrier of Ti-Si- molecular sieve composite coatings.
（3）Load active component：By step（2）Obtained honeycomb ceramic carrier 30g/L cerous nitrates, 8g/L silver nitrates,
It is impregnated 5 minutes in 3g/L platinum nitrates and 2g/L palladium nitrate solutions, takes out, blow away raffinate, when 110 DEG C of dryings 12 are small, 500 DEG C of roastings
4 it is small when, you can be made catalyst for catalytic combustion.
On the basis of ceramic honey comb matrix, Ti-Si- molecular sieve composite coating proportions are the catalyst of preparation
12.5wt%, wherein TiO2Proportion is 9wt%, SiO2Proportion is 2wt%, and molecular sieve proportion is 1.5wt%；Activity
Component Pt proportions are 0.06wt%, and Pd proportions are 0.06wt%, and Ag proportions are 0.6wt%, and Ce proportions are
4wt%。
Embodiment 3
（1）The preparation of Ti-Si- molecular sieve complex sols：It takes 450 grams of titanium sulfates and 100g Ludox is added to 1800mL concentration and is
In 4mol/L salpeter solutions, 80g urea, 40g polyethylene glycol and 40g acetylacetone,2,4-pentanediones are added while agitating.After stirring evenly,
50 grams of ZSM-5 molecular sieves are slowly added into the above-mentioned solution being vigorously stirred, when ageing 24 is small, obtain transparent Ti-Si- molecules
Sieve complex sol.
（2）The preparation of Ti-Si- molecular sieve composite coatings：Cordierite honeycomb matrix is immersed into step（1）The Ti- prepared
In Si- molecular sieve complex sols, after taking-up, raffinate in duct is blown away with compressed air, when 100 DEG C of dryings 12 are small, 400 DEG C of roastings
Burn 5 it is small when, you can obtain scribbling the carrier of Ti-Si- molecular sieve composite coatings.
（3）Load active component：By step（2）Obtained honeycomb ceramic carrier 16g/L cerous nitrates, 3g/L silver nitrates,
It is impregnated 5 minutes in 0.6g/L platinum nitrates and 0.8g/L palladium nitrate solutions, takes out, blow away raffinate, when 110 DEG C of dryings 12 are small, 500 DEG C
Roast 4 it is small when, you can be made catalyst for catalytic combustion.
On the basis of ceramic honey comb matrix, Ti-Si- molecular sieve composite coating proportions are the catalyst of preparation
10.8wt%, wherein TiO2Proportion is 7wt%, SiO2Proportion is 1.8wt%, and molecular sieve proportion is 2wt%；Activity
Component Pt proportions are 0.02wt%, and Pd proportions are 0.03wt%, and Ag proportions are 0.2wt%, and Ce proportions are
1wt%。
Embodiment 4
（1）The preparation of Ti-Si- molecular sieve complex sols：It takes 450 grams of titanium sulfates and 200g Ludox is added to 1800mL concentration and is
In the salpeter solution of 1mol/L, 12g urea, 13g polyacrylamides and 15g ethanolamines are added while agitating.It stirs evenly
Afterwards, 50 grams of ZSM-5 molecular sieves are slowly added into the above-mentioned solution being vigorously stirred, when ageing 24 is small, obtain transparent Ti-Si-
Molecular sieve complex sol.
（2）The preparation of Ti-Si- molecular sieve composite coatings：Cordierite honeycomb matrix is immersed into step（1）The Ti- prepared
In Si- molecular sieve complex sols, after taking-up, raffinate in duct is blown away with compressed air, when 120 DEG C of dryings 8 are small, 600 DEG C of roastings
Burn 3 it is small when, you can obtain scribbling the carrier of Ti-Si- molecular sieve composite coatings.
（3）Load active component：By step（2）Obtained honeycomb ceramic carrier 40g/L cerous nitrates, 9g/L silver nitrates,
It is impregnated 5 minutes in 4g/L platinum nitrates and 5g/L palladium nitrate solutions, takes out, blow away raffinate, when 110 DEG C of dryings 12 are small, 500 DEG C of roastings
4 it is small when, you can be made the catalyst for catalytic combustion.
On the basis of ceramic honey comb matrix, Ti-Si- molecular sieve composite coating proportions are the catalyst of preparation
11.4wt%, wherein TiO2Proportion is 6wt%, SiO2Proportion is 3%, molecular sieve proportion be 2.4wt%, activearm
It is 0.08wt% to divide Pt proportions, and Pd proportions are 0.09wt%, and Ag proportions are 0.8wt%, and Ce proportions are
4wt%。
Embodiment 5
With embodiment 2, the difference is that using molecular sieve as described below.
The desired amount of silicon source, silicon source are taken, solution is made with distillation water dissolution respectively, by the oxygen of two kinds of solution and displacement metal
After compound mixing, strong stirring, while template needed for adding in, pH value is adjusted 10, is obtained white gels and is stopped stirring；It will be solidifying
Glue moves to autoclave, and when crystallization 40 is small at a temperature of 150 DEG C, metal isomorphous substitution is obtained after products therefrom washing, filtering
ZSM-5 molecular sieve.Wherein, silicon source is one kind in sodium silicate salt, waterglass, Ludox or metasilicate；Silicon source is aluminium salt
Or one kind in aluminate；Displacement metal is copper, tin, zinc or gallium；Template for n-butylamine, triethylamine, 4-propyl bromide or
One kind in ethylenediamine.Specific service condition is as shown in table 1.
The raw material composition of the ZSM-5 molecular sieve of 1 metal isomorphous substitution of table
The denitrating catalyst for using system with molecular sieve for preparing obtained above standby is 5A, 5B, 5C, 5D.
Comparative example 1
Urea, polyacrylamide and acetylacetone,2,4-pentanedione are not added, other are the same as embodiment 2.
Comparative example 2
Active component does not add cerous nitrate, other are the same as embodiment 2.
Comparative example 3
Active component does not add silver nitrate, other are the same as embodiment 2.
In the present invention, coating firmness is evaluated by ultrasonic vibration experiment, and catalyst sample is put into medium is
In the ultrasonic cleaner of water（KQ-250D, power 150W, frequency 40KHz）, ultrasound 5 it is small when after calculate expulsion rate.Ultrasound comes off
Rate=（Weight after coating weight-sonic oscillation）/ coating weight × 100%.
Each catalyst is evaluated on laboratory room small-sized experimental provision, the actual conditions of evaluation is：Benzene concentration 700
mg/m3, 800 mg/m of ethyl mercaptan concentration3, 500 mg/m of hexane3, H280 mg/m of S concentration3.300 DEG C of reaction temperature；Air speed
For 20000h-1.Acquired results are shown in Table 2.
The weightening of 2 catalyst carrier of table compares and ultrasonic expulsion rate
As can be seen from the above data, the sample coatings expulsion rate of embodiment 1-5 is relatively low, illustrate that the catalyst in the present invention has
Better coating firmness.It is found by Experimental Comparison, catalyst for catalytic combustion organic matter purifying rate of the invention is high, activity
It is good.Under the conditions of having existing for sulfide, high purifying rate is still remain, there is good resistance to SO_2 and stability.
Claims (14)
1. a kind of preparation method of Sulfur-resistant catalytic-combustioncatalyst catalyst, it is characterised in that comprise the following steps：
（1）The preparation of Ti-Si- molecular sieve complex sols：Titanium sulfate, Ludox are added in salpeter solution, is added simultaneously in stirring
Enter dispersant, expanding agent and stabilizer, after stirring evenly, molecular sieve is slowly added into the above-mentioned solution being vigorously stirred, it is old
Change 6-24 obtains stable Ti-Si- molecular sieve complex sols when small；
（2）The preparation of Ti-Si- molecular sieve composite coatings：The Ti-Si- molecular sieves that the immersion of ceramic honey comb matrix is prepared are compound
Raffinate in duct is blown away in colloidal sol, after taking-up, the ceramic honey comb for obtaining scribbling Ti-Si- molecular sieve coatings after drying, roasting carries
Body；
（3）Load active component：Be coated with Ti-Si- molecular sieve coatings honeycomb ceramic carrier be impregnated into containing cerium, silver, platinum,
In the active component salt solution of palladium, raffinate is blown away after taking-up, Sulfur-resistant catalytic-combustioncatalyst catalyst is obtained after dry, roasting.
2. according to the method described in claim 1, it is characterized in that：The concentration of the salpeter solution be 0.5-5.0mol/L, sulphur
The mass volume ratio of sour titanium and salpeter solution is 1g:4mL.
3. according to the method described in claim 1, it is characterized in that：The mass ratio of the titanium sulfate and Ludox is 5:1-1:1,
The mass ratio of titanium sulfate and molecular sieve is 10:1-5:1, the mass ratio of titanium sulfate and dispersant is 40:1-5:1, titanium sulfate is with expanding
The mass ratio of hole agent is 40:1-10:1, the mass ratio of titanium sulfate and stabilizer is 40:1-10:1.
4. according to the method described in claim 1, it is characterized in that：The Ludox is industrial grade silica sol, SiO2Content is
20wt%-30wt%, pH value 8.5-10.
5. the method according to claim 1 or 3, it is characterised in that：The dispersant is urea, and expanding agent is poly- second two
One or more of alcohol, polyacrylamide and carboxymethyl cellulose etc., stabilizer are ethanolamine or acetylacetone,2,4-pentanedione.
6. according to the method described in claim 1, it is characterized in that：Step（1）The molecular sieve is ZSM-5 molecular sieve.
7. the method according to claim 1 or 6, it is characterised in that：The molecular sieve uses the ZSM-5 of metal isomorphous substitution
Molecular sieve replaces metal part or all displaces the Al in ZSM-5 molecular sieve, and the displacement metal is copper, tin, zinc, gallium
One or more of Deng, Si/（Replace metal+Al）Molar ratio is 10-150.
8. according to the method described in claim 7, it is characterized in that：Metal isomorphous substitution ZSM-5 molecular sieve uses hydrothermal synthesis
Prepared by method, be specially：The desired amount of silicon source, silicon source are taken, solution is made with distillation water dissolution respectively, by two kinds of solution and displacement gold
After the oxide mixing of category, strong stirring, while template needed for addition, pH value is adjusted in the range of 9-11, and it is solidifying to obtain white
Glue stops stirring；Gel is moved into autoclave, when crystallization 20-80 is small at a temperature of 50-300 DEG C, products therefrom washing, mistake
The ZSM-5 molecular sieve of metal isomorphous substitution is obtained after filter.
9. according to the method described in claim 8, it is characterized in that：The silicon source for sodium silicate salt, waterglass, Ludox or
One kind in metasilicate；Silicon source is one kind in aluminium salt or aluminate；Displacement metal is copper, tin, zinc or gallium；Template is just
One kind in butylamine, triethylamine, 4-propyl bromide or ethylenediamine.
10. according to the method described in claim 1, it is characterized in that：Step（2）The ceramic honey comb matrix is cordierite honeycomb
Ceramics.
11. according to the method described in claim 1, it is characterized in that：Step（3）In the active component salt solution, cerous nitrate
Concentration be 15-45g/L, the concentration of silver nitrate is 2-10g/L, the concentration of platinum nitrate is 0.45-5 g/L, the concentration of palladium nitrate
For 0.45-5g/L.
12. according to the method described in claim 1, it is characterized in that：Step（2）、（3）The drying temperature is 80-200
DEG C, when drying time is 5-24 small, calcination temperature is 400-600 DEG C, when roasting time is 2-5 small.
13. Sulfur-resistant catalytic-combustioncatalyst catalyst prepared by any the methods of claim 1-12, it is characterised in that：Select honeycomb pottery
Porcelain basal body, in ceramic honey comb matrix channel surfaces immersion coating Ti-Si- molecular sieve composite coatings, carrier dip loading after coating
Active component Pt, Pd, Ce and Ag；On the basis of ceramic honey comb substrate quality, the Ti-Si- molecular sieves composite coating institute accounting
Example is 5wt%-20wt%；Wherein TiO2Proportion is 2wt%-10wt%, SiO2Proportion is 1wt%-5wt%, shared by molecular sieve
Ratio is 1wt%-8wt%；The active component Pt proportions are 0.01wt%-0.1wt%, and Pd proportions are 0.01wt%-
0.1wt%, Ce proportion are 1wt%-5wt%, and Ag proportions are 0.1wt-1wt%.
14. catalyst according to claim 13, it is characterised in that：The ceramic honey comb matrix is made pottery for cordierite honeycomb
Porcelain, the molecular sieve are the ZSM-5 molecular sieve of metal isomorphous substitution, replace metal part or all displace ZSM-5 molecular sieve
In Al, the displacement metal is one or more of tin, zirconium, zinc, gallium etc..
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| CN114146711A (en) * | 2021-11-17 | 2022-03-08 | 中国五环工程有限公司 | Sulfur-resistant halogenated volatile organic compound catalytic combustion monolithic catalyst and preparation method thereof |
| CN114146711B (en) * | 2021-11-17 | 2023-10-10 | 中国五环工程有限公司 | Sulfur-resistant halogenated volatile organic catalytic combustion monolithic catalyst and preparation method thereof |
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