Citation: Zong Ping SHAO, Guang Tao LI, Guo Xing XIONG, Wei Shen YANG. Improved Cellulose Adsorption Method for the Preparation of Perovskite Oxides with Large Specific Surface Area at Low Temperature[J]. Chinese Chemical Letters, ;2000, 11(12): 1103-1106. shu

Improved Cellulose Adsorption Method for the Preparation of Perovskite Oxides with Large Specific Surface Area at Low Temperature

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P. O. Box 110, Dalian 116023

Received Date: 15 May 2000

Fund Project: The authors gratefully acknowledge financial supports from the National Natural Science Foundation of China (Grant No. 59789201), the National Advanced Materials Committee of China (Grant No. 715-006-0122) and the Ministry of Science and Technology, China (Grant No. G1999022401).

Perovskite-type La_1-x Sr_x MO_3-δ (x=0,0.1,0.2, B=Co,Fe,Mn) oxides were prepared by pyrolysis of metal salt-(organic acid)-cellulose compound precursors. Low calcination temperatures, usually lower than 600℃, were needed. The specific surface area of the as-prepared oxides is higher than that prepared by the cellulose adsorption method, and is comparable to that prepared by sol-gel method. The effective organic acid could be EDTA acid, citric acid or DL-hydroxysuccinic acid, among them, EDTA acid is the best one.
- Perovskite,
- synthesis,
- cellulose,
- organic acid,
- surface area
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