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氨丙基三乙氧基硅烷嫁接蒙脱石的制备与表征
  • 期刊名称：科学通报, 53 (21): 2624-2629, 2008.
  • 时间：0
  • 分类：TQ264.12[化学工程—有机化工] P578.967[天文地球—矿物学;天文地球—地质学]
  • 作者机构：[1]中国科学院广州地球化学研究所,广州510640, [2]中国科学院研究生院,北京100049
  • 相关基金：中国科学院知识创新工程重要方向（批准号：KZCX2-YW-112）、国家杰出青年科学基金（批准号：40725006）和国家自然科学基金（批准号：40572023）资助项目 致谢 三位审稿专家提出了中肯意见和修改建议,中国科学院广州地球化学研究所樊明德博士生帮助进行DTG实验和分析.在此一并深表谢意.
  • 相关项目：有机硅嫁接粘土矿物的结构特征、表面性能及其制约因素
关键词： 蒙脱石, 酸活化, 氨丙基三乙氧基硅烷, 嫁接反应
中文摘要：

采用有机硅烷（氨丙基三乙氧基硅烷）对蒙脱石及其酸化土进行嫁接改性，制备了有机硅嫁接蒙脱石，并利用X射线衍射（XRD）、傅里叶转换红外光谱（FFIR）和热重分析（TG）等技术对有机硅嫁接蒙脱石的结构进行了表征．XRD结果表明，有机硅烷嫁接产物的层间距明显增大，说明有机硅烷进入了蒙脱石及其酸化土的层间，并以双层排列方式存在于蒙脱石及其酸化土的层间域内．TG结果表明，酸化处理会降低蒙脱石的热稳定性，但通过对其进行有机硅烷嫁接改性后，不仅能够提高产物的热稳定性，而且能够改变蒙脱石及其酸化土表面与端面的亲和性．

同期刊论文项目
矿物学
期刊论文 38 会议论文 4
有机硅嫁接粘土矿物的结构特征、表面性能及其制约因素
期刊论文 7
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