GB1507976A - Catalysis - Google Patents

Catalysis

Info

Publication number
GB1507976A
GB1507976A GB968474A GB968474A GB1507976A GB 1507976 A GB1507976 A GB 1507976A GB 968474 A GB968474 A GB 968474A GB 968474 A GB968474 A GB 968474A GB 1507976 A GB1507976 A GB 1507976A
Authority
GB
United Kingdom
Prior art keywords
bronzes
earth metal
metal
pto
moo
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
GB968474A
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority to GB968474A priority Critical patent/GB1507976A/en
Priority to DE19752509204 priority patent/DE2509204A1/en
Priority to JP50025704A priority patent/JPS50124888A/ja
Priority to US05/758,335 priority patent/US4143120A/en
Publication of GB1507976A publication Critical patent/GB1507976A/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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/28—Molybdenum
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten

Abstract

1507976 Bronzes; gas purification catalyst JOHNSON MATTHEY & CO Ltd 24 Feb 1975 [4 March 1974] 9684/74 Heading CIA [Also in Division B1] A catalyst suitable for the purification of air and other gaseous medium comprises (1) a bronze of formula A x BO y , where A = alkali metal, alkaline earth metal, rare earth metal, Pb, Tl, Cu, NH 4 , Ag, Ni or H, B=Pt, Ti, V, Nb, Mo, Ta, W or Re, O < x#2, and y = 2 to 3, and (2) a support material. In the examples the bronzes are H x WO 2À8 (x<0À5), Na 0À9 WO 3À4 and H 1À6 MoO 3 , and are supported on extended metal substrates; they are employed for the decomposition of NO in a carrier stream of N 2 . Other specific embodiments mentioned are Ba 0À5 WO 3 , Na 0À5 WO 3 , H 0À5 WO 3 and Ni 0À25 PtO 3 .
GB968474A 1974-03-04 1974-03-04 Catalysis Expired GB1507976A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB968474A GB1507976A (en) 1974-03-04 1974-03-04 Catalysis
DE19752509204 DE2509204A1 (en) 1974-03-04 1975-03-04 CATALITIC MATERIAL FOR PURIFYING AIR AND OTHER GAS MEDIA
JP50025704A JPS50124888A (en) 1974-03-04 1975-03-04
US05/758,335 US4143120A (en) 1974-03-04 1977-01-10 Method of removing nitric oxide from gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB968474A GB1507976A (en) 1974-03-04 1974-03-04 Catalysis

Publications (1)

Publication Number Publication Date
GB1507976A true GB1507976A (en) 1978-04-19

Family

ID=9876775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB968474A Expired GB1507976A (en) 1974-03-04 1974-03-04 Catalysis

Country Status (3)

Country Link
JP (1) JPS50124888A (en)
DE (1) DE2509204A1 (en)
GB (1) GB1507976A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642987A1 (en) * 1989-02-10 1990-08-17 Centre Nat Rech Scient CATALYTIC REDUCTION OF NITROGEN COMPOUNDS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752776A (en) * 1970-11-16 1973-08-14 Mobil Oil Corp Multimetalite catalysts
JPS5432753B2 (en) * 1971-11-22 1979-10-16
JPS4861362A (en) * 1972-04-05 1973-08-28
JPS48103482A (en) * 1972-04-17 1973-12-25

Also Published As

Publication number Publication date
DE2509204A1 (en) 1975-09-11
JPS50124888A (en) 1975-10-01

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Legal Events

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