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The composition based on oxides of zirconium, cerium and of another rare earth a temperature of reducibility reduced, in the field of catalysis.
The composition based on oxides of zirconium, cerium and of another rare earth a temperature of reducibility reduced, in the field of catalysis.
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机译:在催化领域中,基于锆,铈和另一种稀土的氧化物的组合物的还原温度降低。
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摘要
A composition is described that includes oxides of zirconium, cerium and another rare earth different from cerium, having a cerium oxide content not exceeding 50 wt % and, after calcination at 1000° C. for 6 hours, a maximal reducibility temperature not exceeding 500° C. and a specific surface of at least 45 m2/g. The composition can be prepared according to a method that includes continuously reacting a mixture that includes compounds of zirconium, cerium and another rare earth having a basic compound for a residence time not exceeding 100 milliseconds, wherein the precipitate is heated and contacted with a surfactant before calcination.
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