JPS61234931A - エンジンの排気ガス浄化用触媒 - Google Patents

Info

Publication number

JPS61234931A

JPS61234931A JP60074860A JP7486085A JPS61234931A JP S61234931 A JPS61234931 A JP S61234931A JP 60074860 A JP60074860 A JP 60074860A JP 7486085 A JP7486085 A JP 7486085A JP S61234931 A JPS61234931 A JP S61234931A

Authority

JP

Japan

Prior art keywords

catalyst

exhaust gas

alumina

alumina layer

purification performance

Prior art date

1985-04-09

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.)

Granted

Links

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• 239000003054 catalyst Substances 0.000 title claims abstract description 93
• PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 56
• MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 32
• PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims abstract description 32
• 238000000746 purification Methods 0.000 claims abstract description 27
• 238000011144 upstream manufacturing Methods 0.000 abstract description 13
• 229910000420 cerium oxide Inorganic materials 0.000 abstract description 8
• BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 abstract description 8
• 229910052697 platinum Inorganic materials 0.000 abstract description 7
• 239000000654 additive Substances 0.000 abstract description 6
• 229910052763 palladium Inorganic materials 0.000 abstract description 5
• 229910052703 rhodium Inorganic materials 0.000 abstract description 5
• 230000000996 additive effect Effects 0.000 abstract description 4
• 230000003197 catalytic effect Effects 0.000 abstract 4
• 229910003158 γ-Al2O3 Inorganic materials 0.000 abstract 3
• 238000000151 deposition Methods 0.000 abstract 2
• 229910052593 corundum Inorganic materials 0.000 abstract 1
• 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
• KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 18
• BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 17
• 239000010948 rhodium Substances 0.000 description 11
• 230000007704 transition Effects 0.000 description 10
• 239000007788 liquid Substances 0.000 description 8
• 230000000052 comparative effect Effects 0.000 description 6
• 230000000694 effects Effects 0.000 description 6
• 239000002245 particle Substances 0.000 description 6
• 239000002002 slurry Substances 0.000 description 6
• 239000011230 binding agent Substances 0.000 description 5
• 239000000446 fuel Substances 0.000 description 5
• 231100000572 poisoning Toxicity 0.000 description 5
• 230000000607 poisoning effect Effects 0.000 description 5
• 229910018967 Pt—Rh Inorganic materials 0.000 description 4
• 230000007423 decrease Effects 0.000 description 4
• 230000006866 deterioration Effects 0.000 description 4
• 239000000843 powder Substances 0.000 description 3
• 238000005245 sintering Methods 0.000 description 3
• 239000000243 solution Substances 0.000 description 3
• 230000009471 action Effects 0.000 description 2
• 238000005275 alloying Methods 0.000 description 2
• 238000007664 blowing Methods 0.000 description 2
• 230000008859 change Effects 0.000 description 2
• 239000013078 crystal Substances 0.000 description 2
• 238000002425 crystallisation Methods 0.000 description 2
• 230000008025 crystallization Effects 0.000 description 2
• 238000010586 diagram Methods 0.000 description 2
• 238000009499 grossing Methods 0.000 description 2
• 238000010438 heat treatment Methods 0.000 description 2
• 230000003993 interaction Effects 0.000 description 2
• 230000000873 masking effect Effects 0.000 description 2
• 238000005259 measurement Methods 0.000 description 2
• 238000000034 method Methods 0.000 description 2
• PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 2
• 230000002093 peripheral effect Effects 0.000 description 2
• SONJTKJMTWTJCT-UHFFFAOYSA-K rhodium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Rh+3] SONJTKJMTWTJCT-UHFFFAOYSA-K 0.000 description 2
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
• 239000002253 acid Substances 0.000 description 1
• 239000007864 aqueous solution Substances 0.000 description 1
• 239000008280 blood Substances 0.000 description 1
• 210000004369 blood Anatomy 0.000 description 1
• 239000000969 carrier Substances 0.000 description 1
• 229910052878 cordierite Inorganic materials 0.000 description 1
• 230000002542 deteriorative effect Effects 0.000 description 1
• 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 1
• 238000007598 dipping method Methods 0.000 description 1
• 238000010304 firing Methods 0.000 description 1
• 238000004519 manufacturing process Methods 0.000 description 1
• 230000008569 process Effects 0.000 description 1
• 230000002940 repellent Effects 0.000 description 1
• 239000005871 repellent Substances 0.000 description 1
• 230000004044 response Effects 0.000 description 1
• MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
• 239000000126 substance Substances 0.000 description 1

Cited By (1)