GB1474588A - Oxidic catalyst compositions containing a platinum group metal - Google Patents

Oxidic catalyst compositions containing a platinum group metal

Info

Publication number
GB1474588A
GB1474588A GB5345974A GB5345974A GB1474588A GB 1474588 A GB1474588 A GB 1474588A GB 5345974 A GB5345974 A GB 5345974A GB 5345974 A GB5345974 A GB 5345974A GB 1474588 A GB1474588 A GB 1474588A
Authority
GB
United Kingdom
Prior art keywords
oxide
composite
platinum group
calcination
tungsten
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
GB5345974A
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
Priority claimed from US05/423,095 external-priority patent/US3945946A/en
Priority claimed from US423096A external-priority patent/US3870455A/en
Priority claimed from US05/423,114 external-priority patent/US3956188A/en
Priority claimed from US05/423,093 external-priority patent/US3966391A/en
Application filed by Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Publication of GB1474588A publication Critical patent/GB1474588A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts 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
    • B01J23/24Chromium, molybdenum or tungsten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • B01D53/8628Processes characterised by a specific catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/864Removing carbon monoxide or hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/10Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts 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
    • B01J23/56Platinum group metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts 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
    • B01J23/56Platinum group metals
    • B01J23/64Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J35/60
    • B01J35/613

Abstract

1474588 Oxidation catalysts for burners ENGELHARD MINERALS & CHEMICALS CORP 10 Dec 1974 [10 Dec 1973 (4)] 53459/74 Headings B1E and B1F Catalyst compositions comprise a catalytically active calcined composite of alumina, an additional oxidic component which is an oxide of chromium and/or tungsten and/or a rare earth metal and an oxide of titanium, zirconium hafnium and/or thorium, or which is an oxide of chromium and/or tungsten and a rare earth metal oxide and, optionally an oxide of calcium, strontium, barium, silicon and/or tin and a platinum group metal component incorporated in the composite after its calcination. The calcination of the composite is performed at a temperature of at least 850‹C except in the case where the additional oxidic component contains an oxide of chromium and/or tungsten, a rare earth metal oxide and an oxide of calcium, strontium, barium, silicon and/or tin when the minimum temperature is 500‹C. The calcined composite has a surface area of at least 20 m<SP>2</SP>/g after calcination at 1200‹C for two hours. The composite may be supported on an inert carrier such as a ceramic honeycomb before or after incorporation of the platinum group metal component. The catalysts may be promoted by an oxide or sulphide of Mn, V, Cu, Fe, Co or Ni. They may be used in the oxidation of organic compounds and carbon monoxide in, for example, exhaust gases and in the combustion of fuels. The catalytic combustion of unleaded gasoline is described. The fuel is mixed with preheated air, passed serially through two catalyst compositions of the invention supported on ceramic honeycombs separated by a small space to effect adiabatic combustion. The effluent gas is then mixed with more air to effect cooling. Each catalyst composition comprises palladium on a calcined composite of Al 2 O 3 + CeO 2 + Cr 2 O 3 , the upstream honeycomb carrying a greater amount of the composition than the downstream one.
GB5345974A 1973-12-10 1974-12-10 Oxidic catalyst compositions containing a platinum group metal Expired GB1474588A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US05/423,095 US3945946A (en) 1973-12-10 1973-12-10 Compositions and methods for high temperature stable catalysts
US423096A US3870455A (en) 1973-12-10 1973-12-10 Method for catalytically supported thermal combustion
US05/423,114 US3956188A (en) 1973-12-10 1973-12-10 Compositions and methods for high temperature stable catalysts
US05/423,093 US3966391A (en) 1973-12-10 1973-12-10 Method of combustion using high temperature stable catalysts

Publications (1)

Publication Number Publication Date
GB1474588A true GB1474588A (en) 1977-05-25

Family

ID=27503713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5345974A Expired GB1474588A (en) 1973-12-10 1974-12-10 Oxidic catalyst compositions containing a platinum group metal

Country Status (2)

Country Link
GB (1) GB1474588A (en)
SE (2) SE448348B (en)

Also Published As

Publication number Publication date
SE448348B (en) 1987-02-16
SE7415423L (en) 1975-06-11
SE8005917L (en) 1980-08-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee