ES462043A1 - Un metodo de hacer reaccionar contaminantes de gases de es- cape. - Google Patents

Un metodo de hacer reaccionar contaminantes de gases de es- cape.

Info

Publication number
ES462043A1
ES462043A1 ES462043A ES462043A ES462043A1 ES 462043 A1 ES462043 A1 ES 462043A1 ES 462043 A ES462043 A ES 462043A ES 462043 A ES462043 A ES 462043A ES 462043 A1 ES462043 A1 ES 462043A1
Authority
ES
Spain
Prior art keywords
weight percent
catalysts
composite
rhodium
platinum
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
ES462043A
Other languages
English (en)
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.)
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals Corp
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 Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Publication of ES462043A1 publication Critical patent/ES462043A1/es
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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group 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
    • 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
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0238—Impregnation, coating or precipitation via the gaseous phase-sublimation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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)

Abstract

Un método de hacer reaccionar contaminantes de gases de escape procedentes de combustión, mediante la oxidación de los hidrocarburos no quemados y mediante la reducción de los óxidos de nitrógeno, que comprende: (a) hacer pasar dichos gases de escape a través de un primer lecho de un catalizador, para la reducción de los óxidos de nitrógeno y después, (b) inyectar aire en dichos gases de escape y hacer pasar la mezcla resultante a través de un segundo lecho de catalizador para la oxidación de los hidrocarburos no quemados y del monóxido de carbono, en donde dichos primero y segundo lechos de catalizador comprenden (1) un soporte, (2) un componente de óxido metálicos de base depositado sobre dicho soporte, estando seleccionado dicho componente de óxido metálico de base de entre el grupo consistente en los óxidos de hierro, cobalto, níquel, cromo, wolframio, cinc, cobre, manganeso y renio o mezclas de los mismos, y (3) un componente metálico del grupo del platino depositado sobre dicho soporte, estando seleccionado dicho componente metálico del grupo del platino de entre el grupo consistente en platino y platino más, por lo menos, uno de los metales del grupo del platino, rodio, rutenio e iridio o mezclas o aleaciones de los mismos.
ES462043A 1975-08-27 1977-09-01 Un metodo de hacer reaccionar contaminantes de gases de es- cape. Expired ES462043A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60808475A 1975-08-27 1975-08-27

Publications (1)

Publication Number Publication Date
ES462043A1 true ES462043A1 (es) 1978-06-01

Family

ID=24434964

Family Applications (3)

Application Number Title Priority Date Filing Date
ES450974A Expired ES450974A1 (es) 1975-08-27 1976-08-25 Perfeccionamientos introducidos en un metodo de preparar un catalizador.
ES462043A Expired ES462043A1 (es) 1975-08-27 1977-09-01 Un metodo de hacer reaccionar contaminantes de gases de es- cape.
ES462042A Expired ES462042A1 (es) 1975-08-27 1977-09-01 Un metodo de hacer reaccionar los contaminantes de los gasesde escape.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES450974A Expired ES450974A1 (es) 1975-08-27 1976-08-25 Perfeccionamientos introducidos en un metodo de preparar un catalizador.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES462042A Expired ES462042A1 (es) 1975-08-27 1977-09-01 Un metodo de hacer reaccionar los contaminantes de los gasesde escape.

Country Status (16)

Country Link
US (1) US4157316A (es)
JP (1) JPS5227088A (es)
AR (1) AR220510A1 (es)
AU (1) AU505606B2 (es)
BE (1) BE845625A (es)
BR (1) BR7605638A (es)
CA (1) CA1083124A (es)
DD (1) DD127678A5 (es)
DE (1) DE2637198A1 (es)
ES (3) ES450974A1 (es)
FR (1) FR2321940A1 (es)
GB (1) GB1561683A (es)
IT (1) IT1068218B (es)
MX (1) MX4509E (es)
PL (1) PL107472B1 (es)
SE (1) SE446506C (es)

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Also Published As

Publication number Publication date
DE2637198C2 (es) 1989-08-10
SE7609423L (sv) 1977-02-28
FR2321940A1 (fr) 1977-03-25
DE2637198A1 (de) 1977-03-03
IT1068218B (it) 1985-03-21
JPS5227088A (en) 1977-03-01
DD127678A5 (es) 1977-10-05
BE845625A (fr) 1977-02-28
AU505606B2 (en) 1979-11-29
GB1561683A (en) 1980-02-27
US4157316A (en) 1979-06-05
ES462042A1 (es) 1978-06-01
AR220510A1 (es) 1980-11-14
MX4509E (es) 1982-06-02
AU1713376A (en) 1978-03-02
FR2321940B1 (es) 1983-01-28
SE446506C (sv) 1988-04-18
PL107472B1 (pl) 1980-02-29
CA1083124A (en) 1980-08-05
BR7605638A (pt) 1977-08-09
SE446506B (sv) 1986-09-22
ES450974A1 (es) 1978-01-16

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