JPH0464735B2 - - Google Patents

Info

Publication number

JPH0464735B2

JPH0464735B2 JP59036255A JP3625584A JPH0464735B2 JP H0464735 B2 JPH0464735 B2 JP H0464735B2 JP 59036255 A JP59036255 A JP 59036255A JP 3625584 A JP3625584 A JP 3625584A JP H0464735 B2 JPH0464735 B2 JP H0464735B2

Authority

JP

Japan

Prior art keywords

catalyst

supported

foam

group

exhaust gas

Prior art date

1984-02-29

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.)

Expired - Lifetime

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• 239000003054 catalyst Substances 0.000 claims description 46
• BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 27
• 239000006260 foam Substances 0.000 claims description 22
• 239000010948 rhodium Substances 0.000 claims description 20
• KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 15
• 229910052703 rhodium Inorganic materials 0.000 claims description 13
• 229910052697 platinum Inorganic materials 0.000 claims description 12
• 150000001875 compounds Chemical class 0.000 claims description 10
• MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 10
• 150000007529 inorganic bases Chemical class 0.000 claims description 9
• 229910052751 metal Inorganic materials 0.000 claims description 9
• 239000002184 metal Substances 0.000 claims description 9
• 239000000919 ceramic Substances 0.000 claims description 8
• MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 8
• RCMWGBKVFBTLCW-UHFFFAOYSA-N barium(2+);dioxido(dioxo)molybdenum Chemical compound [Ba+2].[O-][Mo]([O-])(=O)=O RCMWGBKVFBTLCW-UHFFFAOYSA-N 0.000 claims description 7
• ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
• 229910052746 lanthanum Inorganic materials 0.000 claims description 6
• FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
• 229910052750 molybdenum Inorganic materials 0.000 claims description 6
• 239000011733 molybdenum Substances 0.000 claims description 6
• 229910052763 palladium Inorganic materials 0.000 claims description 6
• 239000008188 pellet Substances 0.000 claims description 5
• 238000004519 manufacturing process Methods 0.000 claims description 4
• 239000006262 metallic foam Substances 0.000 claims description 4
• 230000009970 fire resistant effect Effects 0.000 claims description 2
• 238000010438 heat treatment Methods 0.000 claims description 2
• 239000002253 acid Substances 0.000 claims 1
• 238000002485 combustion reaction Methods 0.000 description 13
• 239000010419 fine particle Substances 0.000 description 13
• 238000000034 method Methods 0.000 description 13
• 229910052878 cordierite Inorganic materials 0.000 description 11
• PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
• 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 compound [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 description 10
• 239000010410 layer Substances 0.000 description 10
• 239000000203 mixture Substances 0.000 description 9
• 230000000052 comparative effect Effects 0.000 description 8
• QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
• 239000007864 aqueous solution Substances 0.000 description 6
• 230000008929 regeneration Effects 0.000 description 6
• 238000011069 regeneration method Methods 0.000 description 6
• 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
• MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 5
• ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 5
• 238000006243 chemical reaction Methods 0.000 description 5
• 230000000694 effects Effects 0.000 description 5
• 239000002245 particle Substances 0.000 description 5
• 150000003839 salts Chemical class 0.000 description 5
• GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
• 238000001035 drying Methods 0.000 description 4
• 239000013618 particulate matter Substances 0.000 description 4
• 239000000843 powder Substances 0.000 description 4
• 239000000243 solution Substances 0.000 description 4
• 239000000758 substrate Substances 0.000 description 4
• QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
• OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
• 229910052799 carbon Inorganic materials 0.000 description 3
• 238000010304 firing Methods 0.000 description 3
• 229930195733 hydrocarbon Natural products 0.000 description 3
• 150000002430 hydrocarbons Chemical class 0.000 description 3
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
• -1 wire mesh Substances 0.000 description 3
• UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
• ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
• VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
• QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
• 238000009825 accumulation Methods 0.000 description 2
• 239000010953 base metal Substances 0.000 description 2
• 229910002091 carbon monoxide Inorganic materials 0.000 description 2
• 230000003197 catalytic effect Effects 0.000 description 2
• 239000011247 coating layer Substances 0.000 description 2
• 230000007423 decrease Effects 0.000 description 2
• 239000000446 fuel Substances 0.000 description 2
• 239000000463 material Substances 0.000 description 2
• 229910000510 noble metal Inorganic materials 0.000 description 2
• 239000003960 organic solvent Substances 0.000 description 2
• 229910052700 potassium Inorganic materials 0.000 description 2
• 239000011591 potassium Substances 0.000 description 2
• FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
• 239000010970 precious metal Substances 0.000 description 2
• 239000000047 product Substances 0.000 description 2
• 239000002002 slurry Substances 0.000 description 2
• 239000007787 solid Substances 0.000 description 2
• 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
• 239000004215 Carbon black (E152) Substances 0.000 description 1
• LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
• 229910020851 La(NO3)3.6H2O Inorganic materials 0.000 description 1
• 229910002651 NO3 Inorganic materials 0.000 description 1
• NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
• GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
• 229910019142 PO4 Inorganic materials 0.000 description 1
• NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
• 238000002441 X-ray diffraction Methods 0.000 description 1
• 150000001242 acetic acid derivatives Chemical class 0.000 description 1
• 230000001476 alcoholic effect Effects 0.000 description 1
• IXSUHTFXKKBBJP-UHFFFAOYSA-L azanide;platinum(2+);dinitrite Chemical compound [NH2-].[NH2-].[Pt+2].[O-]N=O.[O-]N=O IXSUHTFXKKBBJP-UHFFFAOYSA-L 0.000 description 1
• 229910052788 barium Inorganic materials 0.000 description 1
• DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
• WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
• 229910001626 barium chloride Inorganic materials 0.000 description 1
• 230000033228 biological regulation Effects 0.000 description 1
• 230000015572 biosynthetic process Effects 0.000 description 1
• 238000001354 calcination Methods 0.000 description 1
• 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
• 150000007942 carboxylates Chemical class 0.000 description 1
• KYYSIVCCYWZZLR-UHFFFAOYSA-N cobalt(2+);dioxido(dioxo)molybdenum Chemical compound [Co+2].[O-][Mo]([O-])(=O)=O KYYSIVCCYWZZLR-UHFFFAOYSA-N 0.000 description 1
• 230000006866 deterioration Effects 0.000 description 1
• 238000007598 dipping method Methods 0.000 description 1
• 239000006185 dispersion Substances 0.000 description 1
• 238000006073 displacement reaction Methods 0.000 description 1
• 230000005183 environmental health Effects 0.000 description 1
• 150000004675 formic acid derivatives Chemical class 0.000 description 1
• 150000004820 halides Chemical class 0.000 description 1
• 150000004679 hydroxides Chemical class 0.000 description 1
• 238000005470 impregnation Methods 0.000 description 1
• 150000002484 inorganic compounds Chemical class 0.000 description 1
• 229910010272 inorganic material Inorganic materials 0.000 description 1
• 239000007788 liquid Substances 0.000 description 1
• NMHMDUCCVHOJQI-UHFFFAOYSA-N lithium molybdate Chemical compound [Li+].[Li+].[O-][Mo]([O-])(=O)=O NMHMDUCCVHOJQI-UHFFFAOYSA-N 0.000 description 1
• 150000002736 metal compounds Chemical class 0.000 description 1
• 239000003595 mist Substances 0.000 description 1
• 239000011259 mixed solution Substances 0.000 description 1
• 150000002823 nitrates Chemical class 0.000 description 1
• 229910017604 nitric acid Inorganic materials 0.000 description 1
• 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
• 150000002894 organic compounds Chemical class 0.000 description 1
• 230000003647 oxidation Effects 0.000 description 1
• 238000007254 oxidation reaction Methods 0.000 description 1
• 238000005192 partition Methods 0.000 description 1
• 235000021317 phosphate Nutrition 0.000 description 1
• 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
• PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
• 235000010333 potassium nitrate Nutrition 0.000 description 1
• 239000004323 potassium nitrate Substances 0.000 description 1
• 239000002244 precipitate Substances 0.000 description 1
• 238000000746 purification Methods 0.000 description 1
• 230000001172 regenerating effect Effects 0.000 description 1
• 230000029058 respiratory gaseous exchange Effects 0.000 description 1
• VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 1
• 239000000377 silicon dioxide Substances 0.000 description 1
• 238000003756 stirring Methods 0.000 description 1
• 229910052712 strontium Inorganic materials 0.000 description 1
• CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
• 239000000126 substance Substances 0.000 description 1
• 239000011593 sulfur Substances 0.000 description 1
• 229910052717 sulfur Inorganic materials 0.000 description 1
• 229910052720 vanadium Inorganic materials 0.000 description 1
• LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
• 239000003021 water soluble solvent Substances 0.000 description 1