FR2257324A1 - Catalyst for selective redn of nitrogen oxides - contg copper and alkali(ne earth) or transition metal on alumina carrier - Google Patents

Catalyst for selective redn of nitrogen oxides - contg copper and alkali(ne earth) or transition metal on alumina carrier

Info

Publication number
FR2257324A1
FR2257324A1 FR7425408A FR7425408A FR2257324A1 FR 2257324 A1 FR2257324 A1 FR 2257324A1 FR 7425408 A FR7425408 A FR 7425408A FR 7425408 A FR7425408 A FR 7425408A FR 2257324 A1 FR2257324 A1 FR 2257324A1
Authority
FR
France
Prior art keywords
esp
alkali
catalyst
transition metal
contg
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.)
Granted
Application number
FR7425408A
Other languages
French (fr)
Other versions
FR2257324B1 (en
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
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 Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Publication of FR2257324A1 publication Critical patent/FR2257324A1/en
Application granted granted Critical
Publication of FR2257324B1 publication Critical patent/FR2257324B1/fr
Granted 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
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • 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
    • B01J23/74—Iron group metals
    • 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
    • B01J23/78—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 alkali- or alkaline earth metals
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2047—Magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20784—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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Catalyst for the selective redn. of N oxides in gases with NH3 consists of an Al2O3 carrier contg. Cu and alkali, alkaline earth and/or transition metal(s). The catalyst can be prepd. by copptn. or kneading of Al2O3 and alkali, alkaline earth or transition metal oxide(s) or by impregnating Al2O3 with a liquid contg. alkali, alkaline earth or transition metal(s) and then heating; and then introducing Cu and small amt. of noble metal by immersion or impregnation. The catalyst pref. contain 3-10, esp. 5-8 wt. % Cu and either 4-10, esp. 5-7 wt. % Cr, Mn, Fe, Co, Ni and/or Mo or 2-25, esp. 3-22% Mg or 0.2-5, esp. 2-3% Ba or 0.1-1, esp. 0.2-0 5% K or Pr and pref. also 0.005-0.5, esp. 0.02-0.1% Rh, Ru, Pt or Pd. The catalysts are useful in the purificn. of waste gases from combustion plants, chemical factories, automobiles etc. having stable high activity over long periods and wide temp. ranges and resistance to poisoning.
FR7425408A 1973-09-29 1974-07-22 Catalyst for selective redn of nitrogen oxides - contg copper and alkali(ne earth) or transition metal on alumina carrier Granted FR2257324A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10977473A JPS5621450B2 (en) 1973-09-29 1973-09-29

Publications (2)

Publication Number Publication Date
FR2257324A1 true FR2257324A1 (en) 1975-08-08
FR2257324B1 FR2257324B1 (en) 1980-10-31

Family

ID=14518875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425408A Granted FR2257324A1 (en) 1973-09-29 1974-07-22 Catalyst for selective redn of nitrogen oxides - contg copper and alkali(ne earth) or transition metal on alumina carrier

Country Status (3)

Country Link
JP (1) JPS5621450B2 (en)
DE (1) DE2402094C3 (en)
FR (1) FR2257324A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428863A (en) 1982-07-06 1984-01-31 The Dow Chemical Company Alumina compositions of improved strength useful as catalyst supports
DE3430887A1 (en) * 1984-08-22 1986-02-27 Didier-Werke Ag, 6200 Wiesbaden METHOD FOR REACTIVATING A CATALYST AND SYSTEM FOR CARRYING OUT THE METHOD
EP0362960A3 (en) * 1988-10-05 1990-06-27 Sakai Chemical Industry Co., Ltd., Use of a catalyst composition for denitrization and denitrizing catalysts
DE102018128152A1 (en) * 2018-11-12 2020-05-14 Man Energy Solutions Se Process for the aftertreatment of the exhaust gas of an internal combustion engine and internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036510A (en) * 1964-06-05 1966-07-20 Grace W R & Co Catalytic treatment of exhaust gases
US3449063A (en) * 1966-05-13 1969-06-10 Ethyl Corp Method of controlling exhaust emission
GB1438120A (en) * 1972-09-01 1976-06-03 Exxon Research Engineering Co Removal of nitrogen oxides from flue gas

Also Published As

Publication number Publication date
DE2402094B2 (en) 1980-06-12
DE2402094C3 (en) 1981-12-03
DE2402094A1 (en) 1975-04-17
JPS5621450B2 (en) 1981-05-19
FR2257324B1 (en) 1980-10-31
JPS5060465A (en) 1975-05-24

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