Preparation and Properties of Ce-Zr-Mn Composite Oxide Oxygen-Storage Materials


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The low cerium oxygen-storage materials of Ce-Zr-Mn composite oxide were prepared by co-precipitation method. The materials were characterized by XRD,BET, OSC and so on. The results show that the precursor is prepared using ammonia as the precipitant at pH=10-13, T≥20°C. The precursor is calcined to form a fresh oxygen-storage materials at 700 °C for 5h. It has single crystalline phase -the solid solution Ce 0.45 Zr0.45-x Mn x Y 0.1 O 1.95 ,which has the cube structure of ZrO2 and contains Mn,Y. Phase structure in the materials is stable in the aging process.The addition of Mn in the oxygen-storage materials contributes to raise oxygen-storage performance of the materials. The materials has the better oxygen-storage performance and heat stability when Mn content in the materials is 0.03.



Advanced Materials Research (Volumes 535-537)

Edited by:

Chunxiang Cui, Yali Li and Zhihao Yuan




Y. Q. Zhou et al., "Preparation and Properties of Ce-Zr-Mn Composite Oxide Oxygen-Storage Materials", Advanced Materials Research, Vols. 535-537, pp. 165-168, 2012

Online since:

June 2012




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