IT1001405B - Catalizzatore utile per togliere l ossido d azoto dal gas di scari co di un motore a combustione interna - Google Patents

Catalizzatore utile per togliere l ossido d azoto dal gas di scari co di un motore a combustione interna

Info

Publication number
IT1001405B
IT1001405B IT2954/73A IT295473A IT1001405B IT 1001405 B IT1001405 B IT 1001405B IT 2954/73 A IT2954/73 A IT 2954/73A IT 295473 A IT295473 A IT 295473A IT 1001405 B IT1001405 B IT 1001405B
Authority
IT
Italy
Prior art keywords
exhaust gas
combustion engine
internal combustion
nitrogen oxide
remove nitrogen
Prior art date
Application number
IT2954/73A
Other languages
English (en)
Italian (it)
Original Assignee
Grace W R & 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 Grace W R & Co filed Critical Grace W R & Co
Application granted granted Critical
Publication of IT1001405B publication Critical patent/IT1001405B/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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/51—Spheres
    • 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
    • B01J23/70—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
    • B01J23/892—Nickel and noble 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • 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
    • B01D2255/1021—Platinum
    • 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
    • B01D2255/1023—Palladium
    • 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
    • B01D2255/10—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
    • B01D2255/20738—Iron
    • 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
    • B01D2255/20746—Cobalt
    • 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
    • B01D2255/20753—Nickel

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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
IT2954/73A 1972-12-14 1973-12-06 Catalizzatore utile per togliere l ossido d azoto dal gas di scari co di un motore a combustione interna IT1001405B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31506172A 1972-12-14 1972-12-14

Publications (1)

Publication Number Publication Date
IT1001405B true IT1001405B (it) 1976-04-20

Family

ID=23222715

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2954/73A IT1001405B (it) 1972-12-14 1973-12-06 Catalizzatore utile per togliere l ossido d azoto dal gas di scari co di un motore a combustione interna

Country Status (6)

Country Link
JP (1) JPS5635938B2 (fr)
CA (1) CA1038599A (fr)
DE (1) DE2360975A1 (fr)
FR (1) FR2326973A1 (fr)
GB (1) GB1415757A (fr)
IT (1) IT1001405B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466278A1 (fr) * 1979-10-04 1981-04-10 Pro Catalyse Catalyseur et procede de traitement des gaz d'echappement des moteurs a combustion interne
EP0244127A1 (fr) * 1986-04-16 1987-11-04 Johnson Matthey, Inc., Procédé pour le réglage catalytique des gaz déchappement de véhicules automobiles
US4895824A (en) * 1987-09-08 1990-01-23 W. R. Grace & Co.-Conn. Add-on hydrogen sulfide trap

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259453A (en) * 1962-07-19 1966-07-05 Du Pont Method and apparatus for treating exhaust gases of internal combustion engines
US3397154A (en) * 1963-07-09 1968-08-13 Du Pont Preparation of alumina-supported catalyst compositions and the products thereof
US3513109A (en) * 1967-04-19 1970-05-19 Du Pont Process for applying catalytic coatings
US3524721A (en) * 1967-12-22 1970-08-18 Ethyl Corp Catalyst composition
GB1390182A (en) * 1971-03-16 1975-04-09 Johnson Matthey Co Ltd Catalysis
JPS5338716B2 (fr) * 1972-05-08 1978-10-17

Also Published As

Publication number Publication date
GB1415757A (en) 1975-11-26
JPS5635938B2 (fr) 1981-08-20
CA1038599A (fr) 1978-09-19
JPS5046586A (fr) 1975-04-25
FR2326973A1 (fr) 1977-05-06
DE2360975A1 (de) 1974-06-20

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