Invention Grant
US08460626B2 Compositions based on cerium oxide, zirconium oxide and, optionally, another rare earth oxide, having a specific raised surface at 1100° C, method for the production and use thereof as a catalyst
有权
基于氧化铈，氧化锆和任选的另一稀土氧化物的组合物，在1100℃具有特定的凸起表面，其制备方法和用作催化剂
- Patent Title: Compositions based on cerium oxide, zirconium oxide and, optionally, another rare earth oxide, having a specific raised surface at 1100° C, method for the production and use thereof as a catalyst
- Patent Title (中): 基于氧化铈，氧化锆和任选的另一稀土氧化物的组合物，在1100℃具有特定的凸起表面，其制备方法和用作催化剂
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Application No.: US12977236Application Date: 2010-12-23
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Publication No.: US08460626B2Publication Date: 2013-06-11
- Inventor: Olivier Larcher , Emmanuel Rohart
- Applicant: Olivier Larcher , Emmanuel Rohart
- Applicant Address: FR Rochelle
- Assignee: Rhodia Electronics and Catalysis
- Current Assignee: Rhodia Electronics and Catalysis
- Current Assignee Address: FR Rochelle
- Agency: Dentons US LLP
- Priority: FR0303292 20030318
- Main IPC: B01J23/00
- IPC: B01J23/00 ; B01J31/00 ; B01J8/02 ; B01D53/56 ; B01D53/94 ; C01B21/00 ; C01B23/00 ; C01B25/00 ; C01B31/00 ; C01B33/00 ; C01B35/00 ; C01G28/00 ; C01G30/00
Abstract:
The inventive composition, according to a first embodiment, consists essentially of a cerium oxide and a zirconium oxide in an atomic ratio Ce/Zr of at least 1. According to a second embodiment, said composition is based on cerium oxide, zirconium oxide with an atomic ratio Ce/Zr of at least 1 and at least one rare earth oxide other than cerium. After calcination at 1100° C., said composition has a specific surface of at least 9 m2/g in the second embodiment. The inventive composition can be used as a catalyst especially for the treatment of waste gases from internal combustion engines.
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