JPH0361492B2 - - Google Patents
Info
- Publication number
- JPH0361492B2 JPH0361492B2 JP59059527A JP5952784A JPH0361492B2 JP H0361492 B2 JPH0361492 B2 JP H0361492B2 JP 59059527 A JP59059527 A JP 59059527A JP 5952784 A JP5952784 A JP 5952784A JP H0361492 B2 JPH0361492 B2 JP H0361492B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- alumina
- rhodium
- surface area
- specific surface
- 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 90
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 59
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 42
- 239000010948 rhodium Substances 0.000 claims description 27
- 229910052703 rhodium Inorganic materials 0.000 claims description 27
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 27
- 229910052697 platinum Inorganic materials 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 14
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 13
- 238000000746 purification Methods 0.000 claims description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 7
- 229910052763 palladium Inorganic materials 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 229910000510 noble metal Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 32
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 22
- 229910052684 Cerium Inorganic materials 0.000 description 19
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 19
- 239000010970 precious metal Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 11
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 150000000703 Cerium Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- GHLITDDQOMIBFS-UHFFFAOYSA-H cerium(3+);tricarbonate Chemical compound [Ce+3].[Ce+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O GHLITDDQOMIBFS-UHFFFAOYSA-H 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000001301 oxygen 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
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229960001759 cerium oxalate Drugs 0.000 description 1
- ZMZNLKYXLARXFY-UHFFFAOYSA-H cerium(3+);oxalate Chemical compound [Ce+3].[Ce+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O ZMZNLKYXLARXFY-UHFFFAOYSA-H 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 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 |
|---|---|---|---|
| JP59059527A JPS60206447A (ja) | 1984-03-29 | 1984-03-29 | 排気ガス浄化用触媒の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59059527A JPS60206447A (ja) | 1984-03-29 | 1984-03-29 | 排気ガス浄化用触媒の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60206447A JPS60206447A (ja) | 1985-10-18 |
| JPH0361492B2 true JPH0361492B2 (ko) | 1991-09-20 |
Family
ID=13115833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59059527A Granted JPS60206447A (ja) | 1984-03-29 | 1984-03-29 | 排気ガス浄化用触媒の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206447A (ko) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61234937A (ja) * | 1985-04-09 | 1986-10-20 | Mazda Motor Corp | エンジンの排気ガス浄化用触媒 |
| US4708946A (en) * | 1985-05-23 | 1987-11-24 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Catalyst for purifying exhaust gas |
| DE3873258D1 (de) * | 1987-10-30 | 1992-09-03 | Degussa | Platin-freier dreiweg-katalysator. |
| JP2798690B2 (ja) * | 1989-03-06 | 1998-09-17 | 工業技術院長 | 排ガス浄化用触媒の製造方法 |
-
1984
- 1984-03-29 JP JP59059527A patent/JPS60206447A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60206447A (ja) | 1985-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |