GB1373280A - Process and catalyst for decomposing nitrogen oxides - Google Patents

Process and catalyst for decomposing nitrogen oxides

Info

Publication number
GB1373280A
GB1373280A GB1791972A GB1791972A GB1373280A GB 1373280 A GB1373280 A GB 1373280A GB 1791972 A GB1791972 A GB 1791972A GB 1791972 A GB1791972 A GB 1791972A GB 1373280 A GB1373280 A GB 1373280A
Authority
GB
United Kingdom
Prior art keywords
catalyst
nitrogen oxides
lanthanide
trivalent
april
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
Application number
GB1791972A
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.)
Pro Catalyse SA
Original Assignee
Pro Catalyse SA
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 FR7113858A external-priority patent/FR2134762A5/en
Application filed by Pro Catalyse SA filed Critical Pro Catalyse SA
Publication of GB1373280A publication Critical patent/GB1373280A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/005—Spinels
    • 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
    • B01J23/866—Nickel and chromium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

1373280 Purifying I C engine exhaust gases SOC FRANCAIS DES PRODUITS POUR CATALYSE 18 April 1972 [19 April 1971 2 Dec 1971] 17919/72 Heading F1B [Also in Division B 1] Nitrogen oxides in exhaust gases containing them in admixture with reducing gases are decomposed by means of a supported nickel, iron, chromium oxide catalyst. The catalyst comprises a carrier and from 3-20 wt per cent of the catalyst of an active phase M x (M' y M" z ) O t wherein M is divalent Ni, Mg, Ca, Mn, Cu, Zn, Co and/or Fe, M' is trivalent Fe, Al, Mn, V, Sc, Y and/or a lanthanide, M" is trivalent Cr, Al, Mn, V, Sc, Y and/or a lanthanide, x is 0À5-1À5, y'/y+z is 0À01 to 0À09, y + z is 1À5-3 and t is less than 10 with the proviso that at least 50 atom per cent of each of M, M' and M" are Ni, Fe and Cr respectively. A platinum group metal may also be deposited on the carrier or the catalyst may be mixed with a supported platinum group metal catalyst. The preferred carriers are alumina and/or spinel.
GB1791972A 1971-04-19 1972-04-18 Process and catalyst for decomposing nitrogen oxides Expired GB1373280A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7113858A FR2134762A5 (en) 1971-04-19 1971-04-19 Decomposing oxides of nitrogen
FR7143394A FR2163830A6 (en) 1971-04-19 1971-12-02

Publications (1)

Publication Number Publication Date
GB1373280A true GB1373280A (en) 1974-11-06

Family

ID=26216344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1791972A Expired GB1373280A (en) 1971-04-19 1972-04-18 Process and catalyst for decomposing nitrogen oxides

Country Status (8)

Country Link
JP (1) JPS5627293B1 (en)
BE (1) BE781951A (en)
CA (1) CA992057A (en)
DE (1) DE2218665C3 (en)
FR (1) FR2163830A6 (en)
GB (1) GB1373280A (en)
IT (1) IT953675B (en)
NL (1) NL7205239A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1304164A1 (en) * 2001-10-15 2003-04-23 Haldor Topsoe A/S Process for the production of mixed metal oxide containing catalysts
CN111659187A (en) * 2020-06-01 2020-09-15 南昌航空大学 Preparation method of piezoelectric foamed ceramic filter for sewage treatment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1295813C (en) * 1988-12-14 1992-02-18 Karl T. Chuang Reduction of nitrogen oxides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1767064A1 (en) * 1968-03-27 1970-09-17 Basf Ag Catalyst for the production of hydrogen from gases containing carbon monoxide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1304164A1 (en) * 2001-10-15 2003-04-23 Haldor Topsoe A/S Process for the production of mixed metal oxide containing catalysts
US6875723B2 (en) 2001-10-15 2005-04-05 Haldor Topsoe A/S Process for the production of iron oxide containing catalysts
CN111659187A (en) * 2020-06-01 2020-09-15 南昌航空大学 Preparation method of piezoelectric foamed ceramic filter for sewage treatment

Also Published As

Publication number Publication date
IT953675B (en) 1973-08-10
DE2218665A1 (en) 1972-11-09
CA992057A (en) 1976-06-29
DE2218665B2 (en) 1980-08-07
DE2218665C3 (en) 1981-12-03
JPS5627293B1 (en) 1981-06-24
BE781951A (en) 1972-10-12
FR2163830A6 (en) 1973-07-27
NL7205239A (en) 1972-10-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee