GB1453316A - Removal of nitrogen oxides using coated catalyst - Google Patents

Removal of nitrogen oxides using coated catalyst

Info

Publication number
GB1453316A
GB1453316A GB5706773A GB5706773A GB1453316A GB 1453316 A GB1453316 A GB 1453316A GB 5706773 A GB5706773 A GB 5706773A GB 5706773 A GB5706773 A GB 5706773A GB 1453316 A GB1453316 A GB 1453316A
Authority
GB
United Kingdom
Prior art keywords
oxide
nitrogen oxides
alumina
catalyst
reduction
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
GB5706773A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1453316A publication Critical patent/GB1453316A/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
    • B01J23/74—Iron group 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
    • B01D53/74—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
    • B01J23/72—Copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

1453316 Nitrogen oxide reduction EXXON RESEARCH & ENG CO 10 Dec 1973 [27 Dec 1972] 57067/73 Heading B1E [Also in Division Cl] A catalyst active for the selective reduction of nitrogen oxides and which comprises at least one non-noble transition metal oxide-containing active material on a porous refractory carrier comprising an alumina base and a coating of a second refractory oxide on said base is used in a process in which the quantity of nitrogen oxides in a gas stream containing oxygen is reduced by (a) adding at least 5 mole of ammonia per mole of nitrogen oxides and-(b) contacting the gas mixture in a reaction zone at at least 500‹F with said solid catalyst. The coating is preferably silica, titania, zirconia, ceria and/or thoria and the catalyst material is preferably an oxide of Fe, Co, Ni, Cu, V, Cr, Mo and/or W. In the Examples, a two stage reduction is effected using copper oxide on alumina in the first state and iron oxide on titaniacoated alumina in the second stage.
GB5706773A 1972-12-27 1973-12-10 Removal of nitrogen oxides using coated catalyst Expired GB1453316A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31892172A 1972-12-27 1972-12-27

Publications (1)

Publication Number Publication Date
GB1453316A true GB1453316A (en) 1976-10-20

Family

ID=23240134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5706773A Expired GB1453316A (en) 1972-12-27 1973-12-10 Removal of nitrogen oxides using coated catalyst

Country Status (7)

Country Link
JP (1) JPS594175B2 (en)
BE (1) BE809129A (en)
CA (1) CA1002732A (en)
DE (1) DE2363865A1 (en)
FR (1) FR2212171B1 (en)
GB (1) GB1453316A (en)
NL (1) NL7317416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247412A (en) * 1989-03-17 1992-03-04 Mobil Oil Corp Regeneration of Fischer-Tropsch catalysts

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523086B2 (en) * 1973-03-26 1980-06-20
JPS5429991B2 (en) * 1973-10-15 1979-09-27
JPS542912B2 (en) * 1973-09-10 1979-02-15
JPS5235342B2 (en) * 1973-12-12 1977-09-08
JPS526953B2 (en) * 1973-12-12 1977-02-25
JPS5222839B2 (en) * 1973-12-12 1977-06-20
JPS5152361A (en) * 1974-11-01 1976-05-08 Hitachi Ltd Haigasuchuno chitsusosankabutsu ojokyosuru hoho
JPS5334195B2 (en) * 1975-01-28 1978-09-19
JPS5621469B2 (en) * 1975-02-25 1981-05-19
JPS5296966A (en) * 1976-02-12 1977-08-15 Hitachi Ltd Treatment of exhaust gas containing nitrogen oxides and sulfur oxides
JPS52152865A (en) * 1976-06-16 1977-12-19 Hitachi Ltd Treatment of gas containing nitrogen oxides and sulfur oxides
JPS5340680A (en) * 1977-10-11 1978-04-13 Mitsubishi Chem Ind Ltd Decomposing method for nitrogen oxide by catalytic reduction
DE3407291A1 (en) * 1984-02-29 1985-09-05 Basf Ag, 6700 Ludwigshafen Process for the catalytic purification of exhaust gases from diesel engines
DE3643605C1 (en) * 1986-12-19 1988-07-14 Otto Feuerfest Gmbh Carrier catalyst, process for its preparation and its use for the reduction of nitrogen oxides
SE464688B (en) * 1989-02-27 1991-06-03 Eka Nobel Ab CATALYST FOR REDUCING NITROGEN OXIDES AND USING THEREOF

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253685B (en) * 1963-01-22 1967-11-09 Degussa Process for the removal of nitrogen oxides from nitrogen oxide-containing exhaust gases
US3279884A (en) * 1963-10-31 1966-10-18 Basf Ag Selective removal of oxides of nitrogen from gas mixtures containing oxygen
DE1259298B (en) * 1964-08-29 1968-01-25 Hamburger Gaswerke Gmbh Process for removing nitrogen oxides from gases by catalytic reduction thereof to nitrogen
US3502595A (en) * 1965-10-28 1970-03-24 Sinclair Research Inc Preparation of silica-alumina,titania-alumina,and phosphorous oxide-alumina catalysts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247412A (en) * 1989-03-17 1992-03-04 Mobil Oil Corp Regeneration of Fischer-Tropsch catalysts

Also Published As

Publication number Publication date
BE809129A (en) 1974-06-27
CA1002732A (en) 1977-01-04
NL7317416A (en) 1974-07-01
FR2212171A1 (en) 1974-07-26
DE2363865A1 (en) 1974-07-04
JPS594175B2 (en) 1984-01-28
JPS4997794A (en) 1974-09-17
FR2212171B1 (en) 1980-05-16

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Legal Events

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