Catalyst for catalytic combustion
AssigneeHitachi, Ltd.
InventorsAkira Kato, Tomoichi Kamo, Shigeo Uno, Hiroshi Kawagoshi, Hisao Yamashita, Shinpei Matsuda
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Abstract
A catalyst comprising precious metal particles supported on a carrier obtained from (a) titania as a first component and (b) as a second component at least one metal oxide selected from oxides of magnesium, strontium, lanthanum, yttrium, cerium, zirconium, silicon and tin, is effective for catalytic combustion of a fuel at a temperature of 400.degree. to 1500.degree. C. with excellent durability.
Claims18
A catalyst for catalytic combustion consisting essentially of precious metal particles of at least one member selected from the group consisting of platinum, palladium, ruthenium, iridium and rhodium supported on a carrier obtained from (a) a first component of titania and (b) a second component of at least one metal oxide selected from the group consisting of oxides of magnesium, strontium, lanthanum, yttrium, cerium, zirconium, silicon and tin;
- the compositional ratio of the first component titania to the second component metal oxide is 1:0.05 to 1:.notlessthan.1 in atomic ratio of Ti:metal of the second component.
A catalyst for catalytic combustion consisting of precious metal particles of at least one member selected from the group consisting of platinum, palladium, ruthenium, iridium and rhodium and at least one member selected from the group consisting of nickel, cobalt, manganese and chromium supported on a carrier obtained from (a) a first component of titania and (b) a second component of at least one metal oxide selected from the group consisting of oxides of magnesium, strontium, lanthanum, yttrium, cerium, silicon and tin;
- the compositional ratio of the first component titania to the second component metal oxide being 1:0.05 to 1:.notlessthan.1 in atomic ratio of Ti:metal of the second component.
Dependencies are inferred from the claim text.