JPH0554382B2 - - Google Patents
Info
- Publication number
- JPH0554382B2 JPH0554382B2 JP60074860A JP7486085A JPH0554382B2 JP H0554382 B2 JPH0554382 B2 JP H0554382B2 JP 60074860 A JP60074860 A JP 60074860A JP 7486085 A JP7486085 A JP 7486085A JP H0554382 B2 JPH0554382 B2 JP H0554382B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- alumina
- exhaust gas
- layer
- alumina layer
- 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 103
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 51
- 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 description 30
- 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 description 30
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 10
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 5
- 238000000746 purification Methods 0.000 description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 25
- 239000007789 gas Substances 0.000 description 21
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 21
- 239000010948 rhodium Substances 0.000 description 14
- 238000011144 upstream manufacturing Methods 0.000 description 11
- 230000007704 transition Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 description 4
- 229910018967 Pt—Rh Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052703 rhodium Inorganic materials 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 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
- 239000000843 powder Substances 0.000 description 2
- SONJTKJMTWTJCT-UHFFFAOYSA-K rhodium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Rh+3] SONJTKJMTWTJCT-UHFFFAOYSA-K 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 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
- 239000012153 distilled water Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 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
- 238000003756 stirring Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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 |
|---|---|---|---|
| JP60074860A JPS61234931A (ja) | 1985-04-09 | 1985-04-09 | 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 |
|---|---|---|---|
| JP60074860A JPS61234931A (ja) | 1985-04-09 | 1985-04-09 | エンジンの排気ガス浄化用触媒 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61234931A JPS61234931A (ja) | 1986-10-20 |
| JPH0554382B2 true JPH0554382B2 (da) | 1993-08-12 |
Family
ID=13559497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60074860A Granted JPS61234931A (ja) | 1985-04-09 | 1985-04-09 | エンジンの排気ガス浄化用触媒 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61234931A (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134058A (ja) * | 1986-11-27 | 1988-06-06 | Cataler Kogyo Kk | 排気ガス浄化用触媒 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827125A (da) * | 1971-08-11 | 1973-04-10 | ||
| JPS4932891A (da) * | 1972-07-26 | 1974-03-26 | ||
| JPS55164715A (en) * | 1979-06-09 | 1980-12-22 | Fuji Heavy Ind Ltd | Catalytic converter used for purifying exhaust gas |
| JPS58133831A (ja) * | 1982-02-01 | 1983-08-09 | ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン | 触媒燃焼器 |
| JPS58146441A (ja) * | 1982-02-24 | 1983-09-01 | Toyota Motor Corp | 排気ガス浄化用触媒 |
-
1985
- 1985-04-09 JP JP60074860A patent/JPS61234931A/ja active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827125A (da) * | 1971-08-11 | 1973-04-10 | ||
| JPS4932891A (da) * | 1972-07-26 | 1974-03-26 | ||
| JPS55164715A (en) * | 1979-06-09 | 1980-12-22 | Fuji Heavy Ind Ltd | Catalytic converter used for purifying exhaust gas |
| JPS58133831A (ja) * | 1982-02-01 | 1983-08-09 | ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン | 触媒燃焼器 |
| JPS58146441A (ja) * | 1982-02-24 | 1983-09-01 | Toyota Motor Corp | 排気ガス浄化用触媒 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61234931A (ja) | 1986-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |