Effect of Cerium/Zirconium Molar Ratio on the Property of Series OSM Ce0.3+xZr0.6-xY0.1O1.95

Chem. J. Chinese Universities

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Effect of Cerium/Zirconium Molar Ratio on the Property of Series OSM Ce_0.3+xZr_0.6-xY_0.1O_1.95

MAO Xiao-Bo, CHEN Yao-Qiang, ZHONG Jun-Bo, WANG Jian-Li, ZHAO Ming, GONG Mao-Chu

College of Chemistry, Sichuan University, Chengdu 610064, China

Received:2006-04-03 Revised:1900-01-01 Online:2007-03-10 Published:2007-03-10
Contact: GONG Mao-Chu

Abstract

Abstract: A series of materials Ce_0.3+xZr_0.6-xY_0.1O_1.95were prepared by co-precipitation routine and the property of these materials was studied by means of oxygen storage capacity, temperature programming reduction, X-ray diffraction, transmission electronic microscope, and X-ray photoelectron spectroscopy. The results indicate that the materials with a low Ce/Zr molar ratio possess higher cerium atom utilization ratio, reducibility and thermal stability than the materials with a high Ce/Zr ratio, and Ce_0.35Zr_0.55Y_0.1O_1.95 possesses the best properties.

Key words: Oxygen storage material(OSM), Oxygen storage capacity(OSC), Cerium/zirconium molar ratio [n(Ce)/n(Zr)], Cerium atom utilization ratio

CLC Number:

O641

TrendMD:

MAO Xiao-Bo, CHEN Yao-Qiang, ZHONG Jun-Bo, WANG Jian-Li, ZHAO Ming, GONG Mao-Chu. Effect of Cerium/Zirconium Molar Ratio on the Property of Series OSM Ce_0.3+xZr_0.6-xY_0.1O_1.95[J]. Chem. J. Chinese Universities, doi: .

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Effect of Cerium/Zirconium Molar Ratio on the Property of Series OSM Ce_0.3+xZr_0.6-xY_0.1O_1.95

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