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

Abstract:

Article Preview

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.

Info:

Periodical:

Advanced Materials Research (Volumes 535-537)

Edited by:

Chunxiang Cui, Yali Li and Zhihao Yuan

Pages:

165-168

Citation:

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

Export:

Price:

$41.00

[1] Chen Yaoqiang,  Wang Jianli, Shi Zhonghua: Bulletin of Nationai Natural Science Foundation of China Vol. 22 (2008), p.8(In Chinese).

[2] A. Laachir, V. Perrichen, A. Badri: J. Chem. Soc., Faraday Transl, Vol. 87 (1991), p.299.

[3] Tsutomu Yamaguchi, Norimasa Ikeda, Hideshi Hattori: J. Catal. Vol. 67 (1981), p.324.

[4] P. Vidmar, P. Fornasiero, J. Kaspar: J. Catal. 171(1997), p.160.

[5] Chen Yaoqiang, Gong Maochu, wang Ming, Zhao Ming: China Patent1817447. (2006).

[6] Hu Yucai, Feng Changgen, Wang Liqiong: Environmental Science & Technology, Vol. 25(2002), p.42 (In Chinese).

[7] Guo Jiaxiu; Yuan Shuhua; Gong Maochu: Chinese Journal of Chemical Physics Vol. 23(2007), p.73(In Chinese).

[8] ChangYunfeng, McCartyJonG: CatalysisToday, Vol. 30(1996), p.163.

[9] Baldcci G, Fornasiero P: Catal Lett, Vol. 33(1993), p.193.

[10] Fornasiero P, Di Monte P: J Catal, Vol. 151(1995), p.168.