GB1499051A - Process for the decontamination of the off-gases of internal combustion engines - Google Patents

Process for the decontamination of the off-gases of internal combustion engines

Info

Publication number
GB1499051A
GB1499051A GB8042/76A GB804276A GB1499051A GB 1499051 A GB1499051 A GB 1499051A GB 8042/76 A GB8042/76 A GB 8042/76A GB 804276 A GB804276 A GB 804276A GB 1499051 A GB1499051 A GB 1499051A
Authority
GB
United Kingdom
Prior art keywords
mouldings
temperatures
gases
calcined
combustion engines
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
GB8042/76A
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of GB1499051A publication Critical patent/GB1499051A/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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/889—Manganese, technetium or rhenium
    • B01J23/8892—Manganese
    • 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
    • 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
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • 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
    • B01J23/755—Nickel
    • 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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)

Landscapes

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

Abstract

In a process for purifying the exhaust gases of combustion engines, operated at least partly with methanol, by oxidation with oxygen-containing gases, the exhaust gases are reacted with excess oxygen at temperatures above 100 DEG C in the presence of a supported catalyst which is composed of at least two of the aluminates of copper, manganese, nickel and of cerium as active constituents and of pure aluminium oxide as support. To produce this supported catalyst, preferably pure aluminium oxide is pressed with addition of graphite to give mouldings, the graphite is burned off at temperatures of 600 to 700 DEG C, the mouldings are calcined at 1000 to 1200 DEG C, the calcined mouldings are impregnated with at least two of the nitrates of copper and/or of manganese and/or of nickel and/or of cerium in aqueous solution, the metal nitrates drawn into the mouldings are decomposed at temperatures of 350 to 500 DEG C and the metal-oxide-containing mouldings are then calcined at temperatures of 800 to 1100 DEG C.
GB8042/76A 1975-03-29 1976-03-01 Process for the decontamination of the off-gases of internal combustion engines Expired GB1499051A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2513942A DE2513942C3 (en) 1975-03-29 1975-03-29 Process for the production of a supported catalyst

Publications (1)

Publication Number Publication Date
GB1499051A true GB1499051A (en) 1978-01-25

Family

ID=5942686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8042/76A Expired GB1499051A (en) 1975-03-29 1976-03-01 Process for the decontamination of the off-gases of internal combustion engines

Country Status (10)

Country Link
AT (1) AT359049B (en)
BE (1) BE840153A (en)
CH (1) CH621386A5 (en)
DE (1) DE2513942C3 (en)
DK (1) DK146678C (en)
FR (1) FR2306334A1 (en)
GB (1) GB1499051A (en)
IT (1) IT1057393B (en)
NL (1) NL7603214A (en)
SE (1) SE427247B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950476A (en) * 1986-11-06 1990-08-21 Ford Motor Company Method of catalytically oxidizing alcohol vapor accompanied by varying amounts of excess oxygen
US5279997A (en) * 1991-10-07 1994-01-18 Ford Motor Company Selective reduction of NOx

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS169764B2 (en) * 1973-05-09 1976-07-29

Also Published As

Publication number Publication date
NL7603214A (en) 1976-10-01
FR2306334B1 (en) 1981-08-07
ATA223176A (en) 1980-03-15
DE2513942B2 (en) 1979-01-11
DE2513942A1 (en) 1976-09-30
DK146678C (en) 1984-05-14
IT1057393B (en) 1982-03-10
AT359049B (en) 1980-10-10
CH621386A5 (en) 1981-01-30
SE7601700L (en) 1976-09-30
DK135276A (en) 1976-09-30
BE840153A (en) 1976-09-29
DK146678B (en) 1983-12-05
SE427247B (en) 1983-03-21
FR2306334A1 (en) 1976-10-29
DE2513942C3 (en) 1979-09-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee