FR2323441A2 - Catalyst for treating motor vehicle exhaust gas - using preformed nickel alloy substrate coated with copper and heated to form oxides - Google Patents
Catalyst for treating motor vehicle exhaust gas - using preformed nickel alloy substrate coated with copper and heated to form oxidesInfo
- Publication number
- FR2323441A2 FR2323441A2 FR7627307A FR7627307A FR2323441A2 FR 2323441 A2 FR2323441 A2 FR 2323441A2 FR 7627307 A FR7627307 A FR 7627307A FR 7627307 A FR7627307 A FR 7627307A FR 2323441 A2 FR2323441 A2 FR 2323441A2
- Authority
- FR
- France
- Prior art keywords
- contg
- heated
- exhaust gas
- motor vehicle
- catalyst
- 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 title abstract 5
- 239000003054 catalyst Substances 0.000 title abstract 2
- 229910052802 copper Inorganic materials 0.000 title abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title 1
- 229910000990 Ni alloy Inorganic materials 0.000 title 1
- 239000010949 copper Substances 0.000 title 1
- 239000011651 chromium Substances 0.000 abstract 3
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/86—Chromium
- B01J23/868—Chromium copper and chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A composite catalytic structure is obtd. by forming a coating contg. Cu on a substrate contg. Ni plus 10 wt. % min. of Cr, the coating contg. less Ni than the substrate. The coated substrate is heated in a protective atmos. to above the m. pt. of Cu to obtain a catalytic structure contg Ni, Cr, and Cu with a stratified surface or which after heating in an atmos. contg. O2 or during its use, develops stratified layers of oxide and an oxidised sub-layer rich in chromium. Used for sepn. of NOx, CO and hydrocarbons in motor vehicle exhaust gas. Provides an inexpensive method of mfg. the catalyst structure by starting from a preformed metal substrate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/612,261 US4021373A (en) | 1973-11-12 | 1975-09-12 | Method of preparing a catalytic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2323441A2 true FR2323441A2 (en) | 1977-04-08 |
Family
ID=24452417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7627307A Pending FR2323441A2 (en) | 1975-09-12 | 1976-09-10 | Catalyst for treating motor vehicle exhaust gas - using preformed nickel alloy substrate coated with copper and heated to form oxides |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5236594A (en) |
| BE (1) | BE846084R (en) |
| CA (1) | CA1080201A (en) |
| DE (1) | DE2641059A1 (en) |
| ES (1) | ES451470A2 (en) |
| FR (1) | FR2323441A2 (en) |
| NL (1) | NL7609719A (en) |
| SE (1) | SE7610025L (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3729126A1 (en) * | 1987-09-01 | 1989-04-06 | Mototech Motoren Umweltschutz | Diesel soot-particle filter and process for the production thereof |
| DE3729683A1 (en) * | 1987-09-04 | 1989-03-30 | Mototech Motoren Umweltschutz | Device for aftertreatment of the exhaust gases of small two-stroke spark ignition engines, and method for its manufacture |
-
1976
- 1976-08-09 CA CA258,727A patent/CA1080201A/en not_active Expired
- 1976-09-01 NL NL7609719A patent/NL7609719A/en not_active Application Discontinuation
- 1976-09-10 FR FR7627307A patent/FR2323441A2/en active Pending
- 1976-09-10 BE BE170535A patent/BE846084R/en active
- 1976-09-10 SE SE7610025A patent/SE7610025L/en unknown
- 1976-09-11 DE DE19762641059 patent/DE2641059A1/en active Pending
- 1976-09-11 ES ES451470A patent/ES451470A2/en not_active Expired
- 1976-09-13 JP JP51108939A patent/JPS5236594A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5236594A (en) | 1977-03-19 |
| DE2641059A1 (en) | 1977-03-31 |
| SE7610025L (en) | 1977-03-13 |
| ES451470A2 (en) | 1977-12-01 |
| NL7609719A (en) | 1977-03-15 |
| CA1080201A (en) | 1980-06-24 |
| BE846084R (en) | 1977-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name |