高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 295.

• 论文 • 上一篇    下一篇

高层间距的羟基硅铝交联蒙托土的合成与表征

赵东源1, 王国甲1, 杨亚书2, 郭燮贤2   

  1. 1. 吉林大学化学系, 长春, 130023;
    2. 中国科学院大连化学物理研究所
  • 收稿日期:1991-10-24 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 赵东源(现在沈阳化工学院).

Synthesis and Characterization of Hydroxyaluminosilicate Cross-Linked Montmorillonites with High Basal Spacings

ZHAO Dong-yuan1, WANG Gou-jia1, YANG Ya-shu2, GUO Xie-xian2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian
  • Received:1991-10-24 Online:1992-03-24 Published:1992-03-24

PDF (PC)

被引次数

11

摘要： 采用溶胶分散法合成了一系列高层间距(2.6nm)的羟基硅铝交联蒙托土(SiAl-CLM),并用27AlNMR、XRD、DTA、XPS、吡啶吸附-IR、正丁胺吸附-TPD等技术进行了表征,用脉冲反应技术考察了其催化活性。结果表明:SiAl-CLM层间存在氧化硅胶团与羟基铝聚体形成的复合Si-Al柱.SiAl-CLM的热稳定性较好,对异丙苯的裂解活性(76.8%)较高。Si的引入增加了交联蒙托土的表面酸性,尤其增加了Brönsted酸性。

关键词: 交联, 蒙托土, 柱化粘土, 合成, 表征

Abstract: A series of hydroxyaluminosilicate cross-linked montmorillonites (Al-Si-CLM) with high basal spacing(2.6 nm) were prepared by the method of collosol dispersed for the first time.The pillaring structuer, thermal stability and surface acidity of the pillared clays were studied by 27Al NMR.XRD, DTA, IR, XPS, TPD.The results show that the thermal stability of the pillared clays was not changed by doping silicate, and the surface acidity, especially the Brönsted acid, was greatly increased.The cracking of cumene was carried out in a pulse reaction system at 400℃ over the pillared clays.Doping silicate increased cracking activity of cumene.

Key words: Cross-linked, Montmorillonite, Pillared clay, Synthesis, Characterization

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