GB1474119A - Reduction catalyst for removal of nitrogen oxides in exhaust gas - Google Patents

Reduction catalyst for removal of nitrogen oxides in exhaust gas

Info

Publication number
GB1474119A
GB1474119A GB3968374A GB3968374A GB1474119A GB 1474119 A GB1474119 A GB 1474119A GB 3968374 A GB3968374 A GB 3968374A GB 3968374 A GB3968374 A GB 3968374A GB 1474119 A GB1474119 A GB 1474119A
Authority
GB
United Kingdom
Prior art keywords
nitrogen oxides
metal
removal
exhaust gas
reduction 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.)
Expired
Application number
GB3968374A
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.)
KAIHATSU KENKYUSHO IND RES
Original Assignee
KAIHATSU KENKYUSHO IND RES
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 JP10349573A external-priority patent/JPS5315708B2/ja
Priority claimed from JP10349673A external-priority patent/JPS5315709B2/ja
Priority claimed from JP11027773A external-priority patent/JPS5315710B2/ja
Priority claimed from JP11027873A external-priority patent/JPS5315711B2/ja
Application filed by KAIHATSU KENKYUSHO IND RES filed Critical KAIHATSU KENKYUSHO IND RES
Publication of GB1474119A publication Critical patent/GB1474119A/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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/76—Iron group metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
    • B01J29/26—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/50—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the erionite or offretite type, e.g. zeolite T, as exemplified by patent document US2950952
    • B01J29/58—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the erionite or offretite type, e.g. zeolite T, as exemplified by patent document US2950952 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/40—Special temperature treatment, i.e. other than just for template removal

Abstract

1474119 Catalyst for reducing nitrogen oxides KOGYO KK 11 Sept 1974 39683/74 Heading B1E [Also in Division Cl] A catalyst for reduction of nitrogen oxides in exhaust gases comprises at least one metal or compound of a metal selected from Cr, Mn and metals of Gps. Ib (e.g. Cu, Ag, Au), IIb (e.g. Zn, Hg, Cd) and VIII (e.g. Fe, Ni, Co, Pd) supported by a carrier comprising a naturally-occuring inorganic tuff, the tuff being formed principally of SiO 2 , Al 2 O 3 and H 2 O and containing a combined total of 1 to 10% wt of alkali metal oxide and alkaline earth metal oxide. The carrier may be treated with an ammonium-cation-containing solution before application of the metal or metal compound.
GB3968374A 1973-09-13 1974-09-11 Reduction catalyst for removal of nitrogen oxides in exhaust gas Expired GB1474119A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP10349573A JPS5315708B2 (en) 1973-09-13 1973-09-13
JP10349673A JPS5315709B2 (en) 1973-09-13 1973-09-13
JP11027773A JPS5315710B2 (en) 1973-09-26 1973-09-26
JP11027873A JPS5315711B2 (en) 1973-09-26 1973-09-26

Publications (1)

Publication Number Publication Date
GB1474119A true GB1474119A (en) 1977-05-18

Family

ID=27469133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3968374A Expired GB1474119A (en) 1973-09-13 1974-09-11 Reduction catalyst for removal of nitrogen oxides in exhaust gas

Country Status (10)

Country Link
AT (1) AT344668B (en)
BR (1) BR7407660D0 (en)
CH (1) CH596880A5 (en)
DE (1) DE2443899C3 (en)
FR (1) FR2243732B1 (en)
GB (1) GB1474119A (en)
IT (1) IT1021324B (en)
NL (1) NL7412183A (en)
SE (1) SE407605B (en)
SU (1) SU660571A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232410A (en) * 1989-05-15 1990-12-12 Cottrell Res Inc Reduction of NOx by fuel staging with acetylene-like fuels
US5041272A (en) * 1989-12-08 1991-08-20 Institute Of Research And Innovation Method for removing nitrogen oxides from exhaust gases

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362966B1 (en) * 1988-10-07 1994-01-12 Sakai Chemical Industry Co., Ltd., Catalysts and methods for denitrization
DE3841990A1 (en) * 1988-12-14 1990-06-21 Degussa PROCESS FOR REDUCING STICK OXIDES FROM EXHAUST GASES
DE102005010221A1 (en) * 2005-03-05 2006-09-07 S&B Industrial Minerals Gmbh Process for the preparation of a catalytically active mineral based on a framework silicate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232410A (en) * 1989-05-15 1990-12-12 Cottrell Res Inc Reduction of NOx by fuel staging with acetylene-like fuels
US5041272A (en) * 1989-12-08 1991-08-20 Institute Of Research And Innovation Method for removing nitrogen oxides from exhaust gases

Also Published As

Publication number Publication date
SE407605B (en) 1979-04-02
DE2443899A1 (en) 1975-04-03
SE7411524L (en) 1975-03-14
FR2243732B1 (en) 1979-03-09
AU7259874A (en) 1976-02-26
SU660571A3 (en) 1979-04-30
DE2443899B2 (en) 1978-03-23
BR7407660D0 (en) 1975-07-08
FR2243732A1 (en) 1975-04-11
CH596880A5 (en) 1978-03-31
AT344668B (en) 1978-08-10
ATA728374A (en) 1977-12-15
DE2443899C3 (en) 1978-11-30
IT1021324B (en) 1978-01-30
NL7412183A (en) 1975-03-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee