DK141836C - - Google Patents

Info

Publication number
DK141836C
DK141836C DK696873A DK696873A DK141836C DK 141836 C DK141836 C DK 141836C DK 696873 A DK696873 A DK 696873A DK 696873 A DK696873 A DK 696873A DK 141836 C DK141836 C DK 141836C
Authority
DK
Denmark
Application number
DK696873A
Other languages
Danish (da)
Other versions
DK141836B (da
Inventor
K Matsushita
H Sakurada
K Onuma
Original Assignee
Mitsubishi Chemical Industries 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 Mitsubishi Chemical Industries Ltd filed Critical Mitsubishi Chemical Industries Ltd
Publication of DK141836B publication Critical patent/DK141836B/da
Application granted granted Critical
Publication of DK141836C publication Critical patent/DK141836C/da

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
    • B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • 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
    • 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
    • B01J23/12—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of actinides
    • 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
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
DK696873AA 1972-12-25 1973-12-20 Fremgangsmåde til katalytisk reduktion af nitrogenoxider i afgangsgas, især fra eksplosionsmotorer og salpetersyreanlæg. DK141836B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP78473 1972-12-25
JP73784A JPS5327699B2 (fi) 1972-12-25 1972-12-25

Publications (2)

Publication Number Publication Date
DK141836B DK141836B (da) 1980-06-30
DK141836C true DK141836C (fi) 1981-01-12

Family

ID=11483311

Family Applications (1)

Application Number Title Priority Date Filing Date
DK696873AA DK141836B (da) 1972-12-25 1973-12-20 Fremgangsmåde til katalytisk reduktion af nitrogenoxider i afgangsgas, især fra eksplosionsmotorer og salpetersyreanlæg.

Country Status (6)

Country Link
US (1) US3885019A (fi)
JP (1) JPS5327699B2 (fi)
DE (1) DE2362255C3 (fi)
DK (1) DK141836B (fi)
GB (1) GB1422840A (fi)
NL (1) NL161067C (fi)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062810A (en) * 1974-03-14 1977-12-13 Hoechst Aktiengesellschaft Carrier-supported catalyst
JPS5127865A (fi) * 1974-09-02 1976-03-09 Asahi Chemical Ind
JPS542913B2 (fi) * 1974-09-19 1979-02-15
JPS52122293A (en) * 1976-04-08 1977-10-14 Nippon Shokubai Kagaku Kogyo Co Ltd Catalyst for purifying nox
US4188365A (en) * 1976-04-16 1980-02-12 Mitsui Petrochemical Industries, Ltd. Process for catalytic vapor phase reduction of nitrogen oxides and catalyst composition used therefor
JPS52156168A (en) * 1976-06-22 1977-12-26 Mitsubishi Chem Ind Ltd Waste gas treatment of nitric acid plant
US4199938A (en) * 1976-12-26 1980-04-29 Nippon Soken, Inc. Method of operating a three-way catalyst for internal combustion engines
US4251496A (en) * 1979-03-22 1981-02-17 Exxon Research & Engineering Co. Process for the removal of SOx and NOx from gaseous mixture containing the same
US5213779A (en) * 1980-07-31 1993-05-25 Gas Desulfurization Corporation Process for optimizing the removal of NOX and SOX from gases utilizing lanthanide compounds
JPS57209819A (en) * 1981-06-19 1982-12-23 Nissan Motor Co Ltd Preparation of active alumina pellet supporting cerium uniformly
US4695437A (en) * 1986-06-13 1987-09-22 Johnson Matthey, Inc. Selective catalytic reduction catalysts
DE3733501A1 (de) * 1987-10-03 1989-04-13 Ruhrgas Ag Verfahren zur verminderung von emissionen beim betrieb von stationaeren verbrennungsmotoren
US4874590A (en) * 1988-04-07 1989-10-17 Uop Catalytic reduction of nitrogen oxides
US5137703A (en) * 1989-06-26 1992-08-11 Trustees Of Boston University Thermal catalytic methods for converting oxides of nitrogen into environmentally compatible products
CN115261923B (zh) * 2022-08-16 2024-05-17 西南科技大学 电催化氮气合成氨的单原子铀-二氧化钛催化剂的制备及应用

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008796A (en) * 1958-06-05 1961-11-14 Engelhard Ind Inc Method of purifying gases containing oxygen and oxides of nitrogen
US3140148A (en) * 1961-07-26 1964-07-07 Lawrence J E Hofer Method of treating exhaust gases with urania-containing catalysts
US3449063A (en) * 1966-05-13 1969-06-10 Ethyl Corp Method of controlling exhaust emission
US3649169A (en) * 1969-06-04 1972-03-14 Gas Council Treatment of gases
JPS531748B2 (fi) * 1972-11-30 1978-01-21

Also Published As

Publication number Publication date
NL7317543A (fi) 1974-06-27
JPS4987566A (fi) 1974-08-21
DE2362255B2 (de) 1977-12-15
DE2362255A1 (de) 1974-06-27
JPS5327699B2 (fi) 1978-08-10
GB1422840A (en) 1976-01-28
NL161067C (nl) 1980-01-15
US3885019A (en) 1975-05-20
DK141836B (da) 1980-06-30
DE2362255C3 (de) 1978-08-31

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Legal Events

Date Code Title Description
PBP Patent lapsed