发明名称 |
COMPOSITION BASED ON OXIDES OF ZIRCONIUM, CERIUM, YTTRIUM, LANTHANUM AND OF ANOTHER RARE EARTH, METHOD FOR PREPARING SAME AND CATALYTIC USE |
摘要 |
<p>The invention concerns a composition based on zirconium oxide in a weight proportion of at least 25%, and comprising between 15% and 60% of cerium oxide, between 10% and 25% of yttrium oxide, between 2% and 10% of lanthanum oxide and between 2% and 15% of another rare earth oxide. Additionally, it has, after calcination for 10 hours at 1150°C, a specific surface of at least 15 m<SUP>2</SUP>/g as well as a cubic phase. It is obtained by forming a mixture comprising zirconium, cerium, yttrium, lanthanum and the additional rare earth, by precipitating said mixture with a base, heating in aqueous medium said precipitate, adding thereto a surfactant and calcining the precipitate. Said composition can be used as catalyst.</p> |
申请公布号 |
WO2007093593(A1) |
申请公布日期 |
2007.08.23 |
申请号 |
WO2007EP51387 |
申请日期 |
2007.02.13 |
申请人 |
RHODIA RECHERCHES ET TECHNOLOGIES;LARCHER, OLIVIER;VERDIER, STEPHAN;ROHART, EMMANUEL;HUANG, AIMIN |
发明人 |
LARCHER, OLIVIER;VERDIER, STEPHAN;ROHART, EMMANUEL;HUANG, AIMIN |
分类号 |
B01J35/10;B01J23/63;B01J37/03;B01J37/06;C01G25/02 |
主分类号 |
B01J35/10 |
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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