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Composition on the basis of zirconium oxide and of oxides of cerium, lanthanum and another rare ear 实用新型

2023-09-20 1430 128K 0

专利信息

申请日期 2025-07-09 申请号 DE20321841
公开(公告)号 DE20321841U1 公开(公告)日 2011-04-07
公开国别 DE 申请人省市代码 全国
申请人 Rhodia Operations Aubervilliers FR
简介 The invention concerns a composition based on zirconium and cerium oxides in an atomic ratio Zr/Ce>1, and further comprising lanthanum oxide or an oxide of a rare earth other than cerium and lanthanum. The invention is characterized in that after calcination for 6 hours at 1150 .C it has a specific surface area of not less than 10 m; /g. The composition is obtained by forming a mixture containing a sol of a zirconium compound and cerium, lanthanum, said rare earth compounds, contacting said mixture with a basic compound solution, while heating and calcining the resulting precipitate. The composition can be used as catalyst.


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