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Catalysts based on highly dispersed metal oxides, especially containing zirconia
Catalysts based on highly dispersed metal oxides, especially containing zirconia
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机译:基于高度分散的金属氧化物(尤其是含氧化锆)的催化剂
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摘要
Catalyst including at least one zirconium oxide, characterised in that at least 85 % of its weight consists of a thermally stable support with a specific surface greater than or equal to 150 m2/g containing from 60 to 99 % by weight of at least one zirconium oxide and from 40 to 1 % by weight of at least one metal oxide of at least one metal chosen from the group consisting of the metals of groups V, VI and VII, noble metals such as ruthenium, osmium, rhodium, iridium and uranium, and the elements phosphorus, arsenic and sulphur, the support being obtained by the molten salts technique by introducing this mixture of oxides into a eutectic mixture of alkali metal nitrates or sulphates which, after dehydration, is maintained between 250 and 550 DEG C, for 30 minutes to 5 hours.
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