Invention Grant
US08524183B2 Composition containing oxides of zirconium, cerium and another rare earth having reduced maximum reducibility temperature, a process for preparation and use thereof in the field of catalysis
有权
含有锆，铈和另一种具有降低的最大还原性温度的稀土的氧化物的组合物，其在催化领域中的制备及其应用的方法
- Patent Title: Composition containing oxides of zirconium, cerium and another rare earth having reduced maximum reducibility temperature, a process for preparation and use thereof in the field of catalysis
- Patent Title (中): 含有锆，铈和另一种具有降低的最大还原性温度的稀土的氧化物的组合物，其在催化领域中的制备及其应用的方法
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Application No.: US13521673Application Date: 2011-01-10
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Publication No.: US08524183B2Publication Date: 2013-09-03
- Inventor: Simon Ifrah , Emmanuel Rohart , Julien Hernandez , Stéphane Denaire
- Applicant: Simon Ifrah , Emmanuel Rohart , Julien Hernandez , Stéphane Denaire
- Applicant Address: FR Aubervilliers
- Assignee: Rhodia Operations
- Current Assignee: Rhodia Operations
- Current Assignee Address: FR Aubervilliers
- Agency: Dentons US LLP
- Priority: FR1000087 20100111
- International Application: PCT/EP2011/050206 WO 20110110
- International Announcement: WO2011/083157 WO 20110714
- Main IPC: B01D53/94
- IPC: B01D53/94 ; B01J21/06 ; B01J23/10 ; B01J37/00 ; B01J37/08
Abstract:
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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