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Material mesostructured partially crystalline forms of the oxide of cerium, zirconium or titanium and comprising an element in solid solution in the oxide.
Material mesostructured partially crystalline forms of the oxide of cerium, zirconium or titanium and comprising an element in solid solution in the oxide.
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机译:铈,锆或钛氧化物的材料为介观结构的部分结晶形式,并且在氧化物中包含固溶元素。
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摘要
The invention relates to a mesostructured material partially crystalline, which is essentially constituted by a compound chosen from among cerium oxide, zirconium oxide, titanium oxide or a mixture of these compounds and which is characterized in that it comprises at least one element m in solid solution in the oxide. This material is obtained by a process in which (a) are placed in contact with a partially crystalline mesostructured material starting with a solution of the element m, which has a concentration of this element of at most 2 mol / l; and (b) is the material obtained after this placing in contact with said solution at a temperature of at most 500°C; the steps (a) and (b) being repeated if necessary, to obtain a material having the desired content of element m. the material can be used as catalyst.
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