发明名称 |
COMPOSITION CONTAINING OXIDES OF ZIRCONIUM, CERIUM AND ANOTHER RARE EARTH HAVING REDUCED MAXIMAL REDUCIBILITY TEMPERATURE, AND METHOD FOR PREPARING AND USING SAME IN THE FIELD OF CATALYSIS |
摘要 |
<p>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.</p> |
申请公布号 |
EP2523907(B1) |
申请公布日期 |
2013.11.27 |
申请号 |
EP20110700821 |
申请日期 |
2011.01.10 |
申请人 |
RHODIA OPERATIONS |
发明人 |
IFRAH, SIMON;ROHART, EMMANUEL;HERNANDEZ, JULIEN;DENAIRE, STEPHANE |
分类号 |
C01G25/00;B01D53/00;B01D53/94;B01J21/06;B01J23/10;C01F17/00;C01G25/02 |
主分类号 |
C01G25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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