JPS61234932A

JPS61234932A - エンジンの排気ガス浄化用触媒

エンジンの排気ガス浄化用触媒

Info

Publication number: JPS61234932A
Authority: JP; Japan
Prior art keywords: catalyst; alumina; exhaust gas; carrier; purification performance
Prior art date: 1985-04-09
Legal status : Granted

Application number

JP60074861A

Other languages

English (en)

Japanese (ja)

Other versions

JPH0554380B2 (enExample

Inventor

Kazunori Ihara

井原　和則

Kunihiro Yagi

八木　邦博

Current Assignee

Mazda Motor Corp

Original Assignee

Mazda Motor Corp

Priority date

1985-04-09

Filing date

1985-04-09

Publication date

1986-10-20

1985-04-09 Application filed by Mazda Motor Corp filed Critical Mazda Motor Corp

1985-04-09 Priority to JP60074861A priority Critical patent/JPS61234932A/ja

1986-10-20 Publication of JPS61234932A publication Critical patent/JPS61234932A/ja

1993-08-12 Publication of JPH0554380B2 publication Critical patent/JPH0554380B2/ja

Status Granted legal-status Critical Current

Links

239000003054 catalyst Substances 0.000 title claims abstract description 112
238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 56
238000000746 purification Methods 0.000 abstract description 27
229910052697 platinum Inorganic materials 0.000 abstract description 9
230000003197 catalytic effect Effects 0.000 abstract description 7
229910052703 rhodium Inorganic materials 0.000 abstract description 6
229910052763 palladium Inorganic materials 0.000 abstract description 4
229910052594 sapphire Inorganic materials 0.000 abstract 2
229910003158 γ-Al2O3 Inorganic materials 0.000 abstract 2
BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 31
230000000694 effects Effects 0.000 description 14
239000010948 rhodium Substances 0.000 description 14
KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 12
230000006866 deterioration Effects 0.000 description 11
239000002245 particle Substances 0.000 description 9
239000007788 liquid Substances 0.000 description 8
230000000052 comparative effect Effects 0.000 description 7
230000007704 transition Effects 0.000 description 7
230000007423 decrease Effects 0.000 description 6
238000005245 sintering Methods 0.000 description 5
239000002002 slurry Substances 0.000 description 5
231100000572 poisoning Toxicity 0.000 description 4
230000000607 poisoning effect Effects 0.000 description 4
238000002425 crystallisation Methods 0.000 description 3
230000008025 crystallization Effects 0.000 description 3
238000010586 diagram Methods 0.000 description 3
239000000243 solution Substances 0.000 description 3
238000002441 X-ray diffraction Methods 0.000 description 2
238000005275 alloying Methods 0.000 description 2
239000007864 aqueous solution Substances 0.000 description 2
238000007664 blowing Methods 0.000 description 2
230000003993 interaction Effects 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
239000011148 porous material Substances 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
229910052684 Cerium Inorganic materials 0.000 description 1
229910003609 H2PtCl4 Inorganic materials 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
239000011230 binding agent Substances 0.000 description 1
230000015572 biosynthetic process Effects 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
239000012153 distilled water Substances 0.000 description 1
238000009826 distribution Methods 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
229910052745 lead Inorganic materials 0.000 description 1
230000007774 longterm Effects 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
230000000873 masking effect Effects 0.000 description 1
238000000034 method Methods 0.000 description 1
229910052759 nickel Inorganic materials 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
230000000704 physical effect Effects 0.000 description 1
CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
231100000614 poison Toxicity 0.000 description 1
230000007096 poisonous effect Effects 0.000 description 1
239000000843 powder Substances 0.000 description 1
230000002940 repellent Effects 0.000 description 1
239000005871 repellent Substances 0.000 description 1
MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
SONJTKJMTWTJCT-UHFFFAOYSA-K rhodium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Rh+3] SONJTKJMTWTJCT-UHFFFAOYSA-K 0.000 description 1
238000003756 stirring Methods 0.000 description 1
239000000126 substance Substances 0.000 description 1