GB1480020A - Catalytic reduction of nitrogen oxides in waste gas - Google Patents

Catalytic reduction of nitrogen oxides in waste gas

Info

Publication number
GB1480020A
GB1480020A GB3254575A GB3254575A GB1480020A GB 1480020 A GB1480020 A GB 1480020A GB 3254575 A GB3254575 A GB 3254575A GB 3254575 A GB3254575 A GB 3254575A GB 1480020 A GB1480020 A GB 1480020A
Authority
GB
United Kingdom
Prior art keywords
salt
waste gas
nitrogen oxides
catalytic reduction
aug
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
GB3254575A
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.)
JGC Corp
Original Assignee
Japan Gasoline Co 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
Application filed by Japan Gasoline Co Ltd filed Critical Japan Gasoline Co Ltd
Publication of GB1480020A publication Critical patent/GB1480020A/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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
    • 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

Abstract

1480020 NO x -reduction catalyst JAPAN GASOLINE CO Ltd 4 Aug 1975 [6 Aug 1974] 32545/75 Heading B1E [Also in Division Cl] A NO x -reduction catalyst comprises a salt of a heteropolyacid with one or more metals of the first transition series supported on a carrier, the catalyst containing at least 0.5% wt of the salt. The salt may be a Cu, Ti, V, Cr, Mn, Fe, Co or Ni salt of silicotungstic, silicomolybdic, phosphotungstic or phosphomolybdic acid. The carrier may be alumina, silica, e.g. kieselguhr or silica-alumina and suitably has a specific surface of not less than 50 m<SP>2</SP>/g and a pore volume of 0.2-1.5 a/g. The catalyst may further contain one or more oxides of the metals of the first transition series. It may be formed by impregnation followed by calcination..
GB3254575A 1974-08-06 1975-08-04 Catalytic reduction of nitrogen oxides in waste gas Expired GB1480020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49089470A JPS5118262A (en) 1974-08-06 1974-08-06 Haigasuchuno chitsusosankabutsuno jokyohoho

Publications (1)

Publication Number Publication Date
GB1480020A true GB1480020A (en) 1977-07-20

Family

ID=13971591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3254575A Expired GB1480020A (en) 1974-08-06 1975-08-04 Catalytic reduction of nitrogen oxides in waste gas

Country Status (5)

Country Link
JP (1) JPS5118262A (en)
DE (1) DE2534270C2 (en)
FR (1) FR2281165A1 (en)
GB (1) GB1480020A (en)
NL (1) NL171236C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410787A1 (en) * 1977-12-02 1979-06-29 Mitsubishi Heavy Ind Ltd PROCESS AND INSTALLATION FOR CONTROLLING THE NITROGEN OXIDE CONTENT IN BURNT GASES FROM COMBUSTION APPLIANCES

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5187163A (en) * 1975-01-29 1976-07-30 Mitsubishi Kakoki Kk
JPS6090043A (en) * 1983-10-21 1985-05-21 Nippon Shokubai Kagaku Kogyo Co Ltd Catalyst for purifying nitrogen oxide
DE3941554A1 (en) * 1989-12-16 1991-06-20 Draegerwerk Ag ELECTROCHEMICAL MEASURING CELL FOR DETECTING GAS COMPONENTS IN FLUID MEDIA
DE4038140A1 (en) * 1990-11-30 1992-06-04 Danfoss As METHOD FOR PRODUCING A GAS SENSOR

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608534A (en) * 1949-04-18 1952-08-26 Union Oil Co Heteropoly acids or salts thereof as catalysts
US3230034A (en) * 1960-09-29 1966-01-18 Du Pont Method of treating exhaust gases of internal combustion engines
CA1007830A (en) * 1972-09-01 1977-04-05 Albert B. Welty (Jr.) Removal of nitrogen oxides from flue gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410787A1 (en) * 1977-12-02 1979-06-29 Mitsubishi Heavy Ind Ltd PROCESS AND INSTALLATION FOR CONTROLLING THE NITROGEN OXIDE CONTENT IN BURNT GASES FROM COMBUSTION APPLIANCES

Also Published As

Publication number Publication date
JPS5118262A (en) 1976-02-13
NL171236C (en) 1983-03-01
DE2534270C2 (en) 1983-05-19
NL171236B (en) 1982-10-01
JPS576966B2 (en) 1982-02-08
DE2534270A1 (en) 1976-02-19
FR2281165B1 (en) 1982-03-05
NL7509356A (en) 1976-02-10
FR2281165A1 (en) 1976-03-05

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Legal Events

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