IT1039248B - Catalizzatore al retenio stabilizzato per la riduzione selettiva di ossidi di azoto e metodo di suapreparazione - Google Patents

Catalizzatore al retenio stabilizzato per la riduzione selettiva di ossidi di azoto e metodo di suapreparazione

Info

Publication number
IT1039248B
IT1039248B IT25360/75A IT2536075A IT1039248B IT 1039248 B IT1039248 B IT 1039248B IT 25360/75 A IT25360/75 A IT 25360/75A IT 2536075 A IT2536075 A IT 2536075A IT 1039248 B IT1039248 B IT 1039248B
Authority
IT
Italy
Prior art keywords
retenium
stabilized
catalyst
preparation
nitrogen oxides
Prior art date
Application number
IT25360/75A
Other languages
English (en)
Italian (it)
Original Assignee
Exxon Research 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 Engineering Co filed Critical Exxon Research Engineering Co
Application granted granted Critical
Publication of IT1039248B publication Critical patent/IT1039248B/it

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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/462—Ruthenium
    • 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
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • 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
    • B01D2255/1026—Ruthenium
    • 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
    • B01D2255/20707—Titanium
    • 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
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/92—Dimensions
    • B01D2255/9207—Specific surface

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (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)
IT25360/75A 1974-07-31 1975-07-11 Catalizzatore al retenio stabilizzato per la riduzione selettiva di ossidi di azoto e metodo di suapreparazione IT1039248B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US493329A US3922235A (en) 1974-07-31 1974-07-31 Stabilized ruthenium catalysts for selective reduction of oxides of nitrogen

Publications (1)

Publication Number Publication Date
IT1039248B true IT1039248B (it) 1979-12-10

Family

ID=23959791

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25360/75A IT1039248B (it) 1974-07-31 1975-07-11 Catalizzatore al retenio stabilizzato per la riduzione selettiva di ossidi di azoto e metodo di suapreparazione

Country Status (6)

Country Link
US (1) US3922235A (enExample)
JP (1) JPS5149191A (enExample)
DE (1) DE2531030A1 (enExample)
FR (1) FR2280429A1 (enExample)
GB (1) GB1509784A (enExample)
IT (1) IT1039248B (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1541928A (en) * 1975-12-23 1979-03-14 Sakai Chemical Industry Co Production of shaped catalysts or carriers comprising titanium oxide
US4149998A (en) * 1976-04-05 1979-04-17 Exxon Research & Engineering Co. Supported metal interaction catalysts
US4258026A (en) * 1979-03-26 1981-03-24 General Atomic Company Hydrogen iodide decomposition
EP0043251B1 (en) * 1980-06-30 1984-10-03 SIBIT S.p.A. Catalyst for the photodecomposition of water, and a process for the preparation thereof
US4477595A (en) * 1982-03-31 1984-10-16 Exxon Research And Engineering Co. Liquid hydrocarbon synthesis using supported ruthenium catalysts
DE68916285D1 (de) * 1988-03-12 1994-07-28 Akira Igarashi Verfahren zur Dampfreformierung von Kohlenwasserstoffen.
JP2879047B2 (ja) * 1989-04-14 1999-04-05 東京エレクトロン株式会社 熱処理装置及び熱処理方法
DE19537202C2 (de) * 1995-10-06 1997-12-11 Dornier Gmbh Katalysator für die Methanisierung von Kohlendioxid sowie seine Herstellung
TW375534B (en) * 1997-06-20 1999-12-01 Sumitomo Metal Ind Titanium oxide photocatalyst and producing method
WO1999033565A1 (en) * 1997-12-24 1999-07-08 Sumitomo Metal Industries, Ltd. Titanium oxide-based photocatalyst, process for preparing the same, and use thereof
DE60139569D1 (de) * 2000-11-06 2009-09-24 Corning Inc Katalysator zur reinigung von abgasen
FR2833253B1 (fr) * 2001-12-12 2004-10-08 Rhodia Elect & Catalysis Procede de preparation d'un oxyde a base de zirconium et de titane, oxydes ainsi obtenus et utilisation de ces oxydes comme catalyseurs
US7497942B2 (en) * 2003-06-06 2009-03-03 Basf Catalysts, Llc Catalyst additives for the removal of NH3 and HCN

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370914A (en) * 1963-11-20 1968-02-27 Esso Res And Eingineering Comp Method of treating exhaust gases of internal combustion engines
US3784675A (en) * 1971-08-02 1974-01-08 Gulf Research Development Co Process for reducing the content of nitrogen oxides in the exhaust gases from internal combustion engines
US3809743A (en) * 1972-01-07 1974-05-07 Monsanto Co Process for treating automotive exhaust
US3842017A (en) * 1972-12-13 1974-10-15 Corning Glass Works Process for depositing noble metal catalysts on oxide carriers

Also Published As

Publication number Publication date
US3922235A (en) 1975-11-25
FR2280429A1 (fr) 1976-02-27
DE2531030A1 (de) 1976-02-19
GB1509784A (en) 1978-05-04
JPS5149191A (enExample) 1976-04-28

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