Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (21): 2150-2160. Previous Articles     Next Articles

氯离子柱撑复合氢氧化物纳米微晶的制备及属性

苟国敬1,2, 马培华1, 褚敏雄1   

  1. 1. 中国科学院青海盐湖研究所, 西宁, 810008;
    2. 中国科学院研究生院, 北京, 100039
  • 投稿日期:2004-04-13 修回日期:2004-06-14 发布日期:2014-02-17
  • 通讯作者: ggj64@yahoo.com.cn
  • 作者简介:苟国敬,E-mail:ggj64@yahoo.com.cn
  • 基金资助:
    国家重点科技攻关"十五"计划(No.2001BA602B-03)资助项目.

Preparation and Basic Properties of Layered Double Hydroxides Intercalated by Chloride Anion

GOU Guo-Jing1,2, MA Pei-Hua1, CHU Min-Xiong1   

  1. 1. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039
  • Received:2004-04-13 Revised:2004-06-14 Published:2014-02-17

A series of layered double hydroxide compounds intercalated by chloride anion (LDH-Cl) have been prepared with coprecipitation method, and the resultant precursors were matured under different crystallization pattern such as microwave, boiling thermal and hydrothermal crystallization. Structural characterization was achieved with energy-dispersive microprobe analysis, X-ray powder diffraction, FT-IR spectra, transmission electron micrograph, thermogravimetric analysis, and BET-N2 surface area measurements in order to establish the relationship between composition and structure, and to show the influence of synthetic factor on composition, structure and property. It has been proved from different evidence that the LDH-Cl had supermolecular structure and layered structure trait in common with hydrotalcite. The particle of LDH-Cl possessed different crystal habit in different crystallization course, bringing about divergence of relativity between composition and structure, and the development difference among grain. This nanometer micro-crystal displayed different degree of crystallinity under different preparing condition and crystallization pattern, resulting in alteration of IR absorption spectrum, thermal stability and specific surface area.

Key words: LDH-Cl, crystal pattern, crystallinity, nanometer micro-crystal, crystal habit