Mechanism Study of Preparing Composite Oxide Powders by a Cellulose Adsorption Method

Abstract

Abstract: The whole process of preparing La_0.8Sr_0.2CoO₃ oxide powders by a cellulose adsorp-tion method was investigated by TG, DTA, XRD, and CO₂-TPD
techniques. It was found that cellulose first acted as an adsorbent. During the initial stage of pyrolysis, the cellulose was partially oxidized, and some
carboxyl groups were formed in the cellulose texture, which was then complexed with the metal ions. At optimized condition, pure phase LSCO powder could be
acquired at low temperature. But, if the produced CO₂ could not elute in time, carbonate would form during pyrolysis, and a calcined temperature higher than
800℃ was needed.

Key words: cellulose, synthesis, La_0.8Sr_0.2CoO₃, mechanism study

CLC Number:

TF123

SHAO Zong-Ping,XIONG Guo-Xing,YANG Wei-Shen. Mechanism Study of Preparing Composite Oxide Powders by a Cellulose Adsorption Method[J]. Journal of Inorganic Materials.

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Mechanism Study of Preparing Composite Oxide Powders by a Cellulose Adsorption Method

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