Temperature Programmed Reduction Studies on CeO_2-Containing Catalysts 被引量：5

Temperature Programmed Reduction Studies on CeO_2-Containing Catalysts

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摘要 Temperature programmed reduction (TPR) study was carried out for CeO 2/Al 2O 3 and CeO 2/ZrO 2 catalysts to evaluate oxygen storage property induced by a facile redox cycling of Ce ion. The CeO 2/ZrO 2 catalyst possesses excellent oxygen storage activity at 373 K after reduction above 1173 K although the oxygen storage of CeO 2/Al 2O 3 catalyst after reduction above 1173 K is poor because of the formation of CeAlO 3. Consequently, the oxygen storage on the CeO 2/ZrO 2 catalyst smoothly occurs from low temperatures when the catalyst is reduced even at high temperatures. Temperature programmed reduction (TPR) study was carried out for CeO 2/Al 2O 3 and CeO 2/ZrO 2 catalysts to evaluate oxygen storage property induced by a facile redox cycling of Ce ion. The CeO 2/ZrO 2 catalyst possesses excellent oxygen storage activity at 373 K after reduction above 1173 K although the oxygen storage of CeO 2/Al 2O 3 catalyst after reduction above 1173 K is poor because of the formation of CeAlO 3. Consequently, the oxygen storage on the CeO 2/ZrO 2 catalyst smoothly occurs from low temperatures when the catalyst is reduced even at high temperatures.

作者 Noriyoshi Kakuta Harunobu Ohkita Takanori Mizushima

机构地区 Department of Materials Science

出处《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第1期1-6,共6页 稀土学报（英文版）

关键词 catalytic chemistry cerium oxide oxygen storage TPR rare earths catalytic chemistry cerium oxide oxygen storage TPR rare earths

分类号 TQ426 [化学工程]

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参考文献4

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Temperature Programmed Reduction Studies on CeO_2-Containing Catalysts 被引量：5

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