无机材料学报

• 研究论文 • 上一篇    下一篇

莫来石膜的制备和结构研究

黄永前; 郑昌琼; 谢长清   

  1. 四川联合大学无机材料系; 成都610065
  • 收稿日期:1997-11-17 修回日期:1998-01-04 出版日期:1998-12-20 网络出版日期:1998-12-20

Study on the Preparation and Structure of Mullite Membrane

HUANG Yong-Qian; ZHENG Chang-Qiong; XIE Chang-Qing   

  1. Department of Inorganic Materials; Sichuan Union University Chengdu 610065 China
  • Received:1997-11-17 Revised:1998-01-04 Published:1998-12-20 Online:1998-12-20

摘要: 本文以正三酸乙酯(TEOS)和硝酸铝为原料,用溶胶-凝胶法制备了支撑和无支撑的莫来石膜.用DTA-TG、XRD:、SEM和BET等分析手段对莫来石膜的结构、形貌及孔径进行了表征,结果表明,非晶态凝胶膜在1050℃热处理后转变为莫来石膜,无支撑莫来石最可几孔径为371nm.

关键词: 溶胶-凝胶法, 莫来石膜, 结构, 制备

Abstract: Supported;and unsupported mullite membranes were prepared by sol-gel process from bothtetraethyoxysilane (TEOS) and aluminium nitrate precursors. Structure, appearance and poresize of the mullilte membrane were characterized by DAT-TG, XRD, SEM and BET. The resultsshowed non-crystal xerogel membrane transformed into the mullite membrane after heat treatmentat 1050℃. The most concentrative pore diameter of unsupported mullite membrane was about3. 71nm.

Key words: sol-gel process, mullite membrane, structure, preparation

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