无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (2): 27-.

• 论文 • 上一篇    下一篇

钙基膨润土的有机改性及其结构表征

唐宏科,薛锋锋   

  1. 教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021
  • 出版日期:2012-02-10 发布日期:2012-02-13

Organic modification and structure characterization of Ca-bentonite

 TANG  Hong-Ke, XUE  Feng-Feng   

  1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,
    Shaanxi University of Science & Technology,Xi′an 710021,China
  • Published:2012-02-10 Online:2012-02-13

摘要: 以钙基膨润土为原料,经提纯钠化改性,用十六烷基三甲基氯化铵对其进行有机改性。研究了改性剂用量、反应温度和反应时间对改性膨润土有机化程度的影响,得到了最佳实验条件:改性剂用量为35%(以钠基膨润土质量计)、反应温度为70 ℃、反应时间为2 h。利用红外光谱仪和X射线衍射仪对最优样品进行测试分析,结果表明:季铵盐插层进入了膨润土的晶层间,层间距明显增大,改性效果良好。

关键词: 膨润土, 十六烷基三甲基氯化铵, 有机改性, 结构表征

Abstract: Na-bentonite from purified and modified Ca-bentonite was modified with organic hexadecyl trimethyl ammonium chloride(CTAC).Influences of dosage of CTAC,reaction temperature,and reaction time on organic degree were discussed and optimal experiment conditions were as follows: the dosage of CTAC was 35%(mass fraction) of Na-bentonite, reaction temperature was 70 ℃,and reaction time was 2 h.The best sample was characterized by IR and XRD.Results showed that the CTAC cations were successfully absorbed in the layers of bentonite clay and the layers′ distance was obviously expanded,and the modification effect was well.

Key words: bentonite, CTAC, organized modification, structure characterization

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