JPH0338892B2 - - Google Patents
Info
- Publication number
- JPH0338892B2 JPH0338892B2 JP60211633A JP21163385A JPH0338892B2 JP H0338892 B2 JPH0338892 B2 JP H0338892B2 JP 60211633 A JP60211633 A JP 60211633A JP 21163385 A JP21163385 A JP 21163385A JP H0338892 B2 JPH0338892 B2 JP H0338892B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- alumina
- coating layer
- cerium oxide
- exhaust gas
- 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.)
- Expired - Lifetime
Links
- 239000003054 catalyst Substances 0.000 claims description 108
- 239000011247 coating layer Substances 0.000 claims description 49
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 47
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 39
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 37
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 34
- 239000010410 layer Substances 0.000 claims description 30
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 25
- 239000010948 rhodium Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 229910052703 rhodium Inorganic materials 0.000 claims description 10
- 229910052763 palladium Inorganic materials 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 description 37
- 238000012360 testing method Methods 0.000 description 25
- 239000002002 slurry Substances 0.000 description 23
- 239000011241 protective layer Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 230000007423 decrease Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 229910001593 boehmite Inorganic materials 0.000 description 7
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 238000007664 blowing Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 5
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 5
- 239000010970 precious metal Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910000033 sodium borohydride Inorganic materials 0.000 description 4
- 239000012279 sodium borohydride Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- 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 3
- 238000001035 drying Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229940057995 liquid paraffin Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004017 vitrification Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241001367053 Autographa gamma Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 1
- 235000011092 calcium acetate Nutrition 0.000 description 1
- 239000001639 calcium acetate Substances 0.000 description 1
- 229960005147 calcium acetate Drugs 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- SONJTKJMTWTJCT-UHFFFAOYSA-K rhodium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Rh+3] SONJTKJMTWTJCT-UHFFFAOYSA-K 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60211633A JPS6271536A (ja) | 1985-09-24 | 1985-09-24 | エンジンの排気ガス浄化用触媒 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60211633A JPS6271536A (ja) | 1985-09-24 | 1985-09-24 | エンジンの排気ガス浄化用触媒 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6271536A JPS6271536A (ja) | 1987-04-02 |
| JPH0338892B2 true JPH0338892B2 (enrdf_load_html_response) | 1991-06-12 |
Family
ID=16609007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60211633A Granted JPS6271536A (ja) | 1985-09-24 | 1985-09-24 | エンジンの排気ガス浄化用触媒 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271536A (enrdf_load_html_response) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011001772A1 (ja) | 2009-07-03 | 2011-01-06 | 日清紡ホールディングス株式会社 | 酸化触媒、還元触媒及び排気ガス浄化触媒 |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3871718D1 (de) * | 1987-10-30 | 1992-07-09 | Degussa | Rhodium-freier dreiwegkatalysator. |
| SE462143C (sv) * | 1988-03-07 | 1996-02-19 | Heraeus Gmbh W C | Katalysator för bilavgasrening, förfarande för framställning därav samt användning därav |
| JPH0985088A (ja) * | 1995-09-21 | 1997-03-31 | Mazda Motor Corp | 排気浄化用触媒 |
| US6585944B1 (en) | 2000-10-17 | 2003-07-01 | Delphi Technologies, Inc. | Enhancement of the OSC properties of Ce-Zr based solid solutions |
| US6468941B1 (en) | 2000-10-17 | 2002-10-22 | Delphi Technologies, Inc. | Niobium containing zirconium-cerium based soild solutions |
| FI20010973A7 (fi) * | 2001-05-09 | 2002-11-10 | Valtion Teknillinen Tutkimuskeskus | Katalysaattori ja menetelmä typpioksidien katalyyttiseksi pelkistämiseksi |
| DE10345896A1 (de) | 2003-09-30 | 2005-04-21 | Emitec Emissionstechnologie | Beschichteter Wabenkörper mit Messfühler |
| US7452843B2 (en) | 2003-12-29 | 2008-11-18 | Umicore Ag & Co. Kg | Exhaust treatment devices, catalyst, and methods of making and using the same |
| JP5218092B2 (ja) * | 2009-01-23 | 2013-06-26 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
| JP7255459B2 (ja) * | 2019-11-15 | 2023-04-11 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
-
1985
- 1985-09-24 JP JP60211633A patent/JPS6271536A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011001772A1 (ja) | 2009-07-03 | 2011-01-06 | 日清紡ホールディングス株式会社 | 酸化触媒、還元触媒及び排気ガス浄化触媒 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6271536A (ja) | 1987-04-02 |