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 oxides

Info

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
Application number
FR7627307A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inco Ltd
Original Assignee
Inco Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US05/612,261 external-priority patent/US4021373A/en
Application filed by Inco Ltd filed Critical Inco Ltd
Publication of FR2323441A2 publication Critical patent/FR2323441A2/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/50Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts 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
    • B01J23/84Catalysts 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
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/86Chromium
    • B01J23/868Chromium 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.
FR7627307A 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 Pending FR2323441A2 (en)

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)

* Cited by examiner, † Cited by third party
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

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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