IT953675B - PROCEDURE FOR THE DECOMPOSITION OF THE NITROGEN OXIDES AND CATA LYZERS USED - Google Patents

PROCEDURE FOR THE DECOMPOSITION OF THE NITROGEN OXIDES AND CATA LYZERS USED

Info

Publication number
IT953675B
IT953675B IT23329/72A IT2332972A IT953675B IT 953675 B IT953675 B IT 953675B IT 23329/72 A IT23329/72 A IT 23329/72A IT 2332972 A IT2332972 A IT 2332972A IT 953675 B IT953675 B IT 953675B
Authority
IT
Italy
Prior art keywords
lyzers
cata
decomposition
procedure
nitrogen oxides
Prior art date
Application number
IT23329/72A
Other languages
Italian (it)
Inventor
P Courty
G Berregi
A Sugier
B Raynal
Original Assignee
Prod Pour Catalyse Soc Franc D
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 Prod Pour Catalyse Soc Franc D filed Critical Prod Pour Catalyse Soc Franc D
Application granted granted Critical
Publication of IT953675B publication Critical patent/IT953675B/en

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)
IT23329/72A 1971-04-19 1972-04-19 PROCEDURE FOR THE DECOMPOSITION OF THE NITROGEN OXIDES AND CATA LYZERS USED IT953675B (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
IT953675B true IT953675B (en) 1973-08-10

Family

ID=26216344

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23329/72A IT953675B (en) 1971-04-19 1972-04-19 PROCEDURE FOR THE DECOMPOSITION OF THE NITROGEN OXIDES AND CATA LYZERS USED

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)

Families Citing this family (3)

* 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
EP1304164A1 (en) * 2001-10-15 2003-04-23 Haldor Topsoe A/S Process for the production of mixed metal oxide containing catalysts
CN111659187B (en) * 2020-06-01 2022-03-01 南昌航空大学 Preparation method of piezoelectric foamed ceramic filter for sewage treatment

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

Also Published As

Publication number Publication date
DE2218665A1 (en) 1972-11-09
DE2218665B2 (en) 1980-08-07
NL7205239A (en) 1972-10-23
DE2218665C3 (en) 1981-12-03
CA992057A (en) 1976-06-29
FR2163830A6 (en) 1973-07-27
JPS5627293B1 (en) 1981-06-24
GB1373280A (en) 1974-11-06
BE781951A (en) 1972-10-12

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