AU7259874A - 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
AU7259874A
AU7259874A AU72598/74A AU7259874A AU7259874A AU 7259874 A AU7259874 A AU 7259874A AU 72598/74 A AU72598/74 A AU 72598/74A AU 7259874 A AU7259874 A AU 7259874A AU 7259874 A AU7259874 A AU 7259874A
Authority
AU
Australia
Prior art keywords
removal
exhaust gas
nitrogen oxides
reduction catalyst
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
AU72598/74A
Other versions
AU494241B2 (en
Inventor
Norihiko Fujita Chihiro Matsuura Takaaki Tamura
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.)
KOGYO KAIHATSU KENKYUSHO
Original Assignee
KENKY USHO KK
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 KENKY USHO KK filed Critical KENKY USHO KK
Application granted granted Critical
Publication of AU494241B2 publication Critical patent/AU494241B2/en
Publication of AU7259874A publication Critical patent/AU7259874A/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
AU72598/74A 1974-08-22 Reduction catalyst for removal of nitrogen oxides in exhaust gas Expired AU494241B2 (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 (2)

Publication Number Publication Date
AU494241B2 AU494241B2 (en) 1976-02-26
AU7259874A true AU7259874A (en) 1976-02-26

Family

ID=

Also Published As

Publication number Publication date
DE2443899C3 (en) 1978-11-30
DE2443899A1 (en) 1975-04-03
CH596880A5 (en) 1978-03-31
FR2243732B1 (en) 1979-03-09
SE407605B (en) 1979-04-02
NL7412183A (en) 1975-03-17
AT344668B (en) 1978-08-10
FR2243732A1 (en) 1975-04-11
IT1021324B (en) 1978-01-30
DE2443899B2 (en) 1978-03-23
BR7407660D0 (en) 1975-07-08
GB1474119A (en) 1977-05-18
ATA728374A (en) 1977-12-15
SE7411524L (en) 1975-03-14
SU660571A3 (en) 1979-04-30

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