GB971994A - Catalytic treatment of automobile exhaust gases - Google Patents

Catalytic treatment of automobile exhaust gases

Info

Publication number
GB971994A
GB971994A GB4522962A GB4522962A GB971994A GB 971994 A GB971994 A GB 971994A GB 4522962 A GB4522962 A GB 4522962A GB 4522962 A GB4522962 A GB 4522962A GB 971994 A GB971994 A GB 971994A
Authority
GB
United Kingdom
Prior art keywords
al2o3
sio2
exhaust gases
automobile exhaust
mgo
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
GB4522962A
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.)
WR Grace and Co
Original Assignee
WR Grace and 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 WR Grace and Co filed Critical WR Grace and Co
Publication of GB971994A publication Critical patent/GB971994A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts

Landscapes

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

Abstract

In a process for oxidizing pollutants in automobile exhaust gases which comprises contacting the gases mixed with an oxygen-containing gas at a temperature at which the pollutants are oxidized there is used a catalyst consisting essentially of an activated mixture of (1) a support of Al2O3, SiO2-Al2O3, SiO2-MgO or an acid-treated clay having a surface area of at least 100 sq.m./gm. and containing Pt and Pd in a weight ratio of from 0,125 to 2,0 and (2) a finely-divided, porous Al2O3, SiO2-Al2O3, acid-treated clay, SiO2-MgO, Al2O3-B2O3, Al2O3-TiO2, or Al2O3-ZrO2 diluent in an amount sufficient to provide a dilution ratio from 5-250; the mixture containing from 0,005-0,2 weight per cent each of Pt and Pd. The support may have a particle size of 10-100 microns. Examples are given. Specification 952,150 and U.S.A. Specification 2,886,512 are referred to.
GB4522962A 1962-01-19 1962-11-29 Catalytic treatment of automobile exhaust gases Expired GB971994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16886962A 1962-01-19 1962-01-19

Publications (1)

Publication Number Publication Date
GB971994A true GB971994A (en) 1964-10-07

Family

ID=22613280

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4522962A Expired GB971994A (en) 1962-01-19 1962-11-29 Catalytic treatment of automobile exhaust gases

Country Status (1)

Country Link
GB (1) GB971994A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976941A (en) * 1984-12-29 1990-12-11 Kawasaki Steel Corporation Process for oxidizing carbon monoxide in exhaust gas from a sintering furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976941A (en) * 1984-12-29 1990-12-11 Kawasaki Steel Corporation Process for oxidizing carbon monoxide in exhaust gas from a sintering furnace

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