高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 523.

• 研究简报 • 上一篇    下一篇

MZrO3(M＝Ba,Sr,Ca)水热合成中结构与反应活性的关系

郑文君, 庞文琴   

  1. 吉林大学化学系, 长春 130023
  • 收稿日期:1995-05-29 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 庞文琴
  • 作者简介:郑文君,男,35岁,博士研究生.
  • 基金资助:

    国家教育委员会博士点基金;吉林大学无机水热合成开放实验室资助

Relationship Between the Structures and Reaction Activity for Hydrothermal Synthesis of MZrO3(M=Ba,Sr,Ca)

ZHENG Wen-Jun, PANG Wen-Qin   

  1. Department of Chemistry, Jilin University, Changchun 130023
  • Received:1995-05-29 Online:1996-04-24 Published:1996-04-24

PDF (PC)

关键词: 水热合成, MZrO3(M＝Ba, Sr, Ca), 结构, 反应活性

Abstract: For hydrothermal synthesis of MZrO3(M=Ba,Sr,Ca),the synthetic regularitiesand hydrothermal conditions were investigated, and the reaction process was analyzed on thebasis of the structures and properties of ZrO2·xH2O gelate and MZrO3(M=Ba,Sr,Ca).We proposed that the structure unit formed in the reaction process, in which alkali-earth ioncombined with[Zr4(OH)8(H2O)16]8+ion.When the structure unit continually grew, the reactive activation energy increased with the decreasing of M2+(M=Ba,Sr,Ca)ionic radius,because the incorporation of a smaller A-ion in the perovskite-type structure is accompaniedby rotation of the ZrO6 octahedra.

Key words: Hydrothermal synthesis, MZrO3(M=Ba, Sr, Ca), Structure, Reaction activity

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