著者

中谷 利雄 脇田 崇弘 大田 陸夫 田中 勝久 若杉 隆

出版者

公益社団法人日本セラミックス協会

雑誌

日本セラミックス協会学術論文誌 : Nippon Seramikkusu Kyokai gakujutsu ronbunshi (ISSN:18821022)

巻号頁・発行日

vol.111, no.1290, pp.137-141, 2003-02-01

被引用文献数

8

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Powders in the CeO_2-ZrO_2-MO_x system were prepared by coprecipitation method. Influence of adding a third components MO_x of transition metal oxides and rare earth metal oxides on the specific surface area (SA) and oxygen storage capacity (OSC) were investigated. It was found that transition metal oxides decrease drastically both SA and OSC values at 1000℃. On the other hand, rare earth metal oxides slightly decreased OSC values. The OSC values of the 20CeO_2- (80-y) ZrO_2-yMO_x powders with y=0-20 mol% LaO_1.5, showed a maximum at around 6 mol% LaO_1.5. In the CeO_2-ZrO_2-MO_x system, 20CeO_2・74ZrO_2・6LaO_1.5 (mol%) powders exhibited the most efficient performance with a high thermal stability up to 1000℃.