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高岭石/苯甲酰胺插层复合物的热分解行为及脱嵌反应动力学

周亚冲 ,  张生辉 ,  欧雪梅 ,  张晓彬 ,  张欣

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引用本文: 周亚冲, 张生辉, 欧雪梅, 张晓彬, 张欣. 高岭石/苯甲酰胺插层复合物的热分解行为及脱嵌反应动力学[J]. 无机化学学报, 2013, 29(5): 985-990. doi: 10.3969/j.issn.1001-4861.2013.00.112 shu
Citation:  ZHOU Ya-Chong, ZHANG Sheng-Hui, OU Xue-Mei, ZHANG Xiao-Bin, ZHANG Xin. Thermal Decomposition Behavior and Deintercalation Kinetics of Kaolinite/ Benzamide Intercalation Complex[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(5): 985-990. doi: 10.3969/j.issn.1001-4861.2013.00.112 shu

高岭石/苯甲酰胺插层复合物的热分解行为及脱嵌反应动力学

    通讯作者: 欧雪梅,E-mail:ouxmei@126.com
  • 基金项目:

    中国矿业大学中央高校基本科研业务费专项资金(2012LWA02) 资助项目。 (2012LWA02)

摘要: 以高岭石/二甲基亚砜为前驱体,利用置换法制备了高岭石/苯甲酰胺插层复合物。XRD和FTIR分析表明苯甲酰胺进入高岭石层间并与其形成新的氢键。采用TG、DSC研究了插层复合物的热分解行为。结果表明复合物在加热过程中发生两步分解,第一步是插层复合物的分解,即插层剂分子于231 ℃发生脱嵌,第二步为高岭石脱羟基的过程。针对第一阶段的脱嵌反应,采用等转化率法改进后的迭代法、Malek法以及Dollimore法等动力学方法计算得到了完整的动力学三因子:活化能Ea=75.4 kJ·mol-1,指前因子A的范围为4.9×1010～8.8×1010 s-1,动力学方程为:G(α)=[1-(1-α)1-n]/(1-n),f(α)=(1-α)n。

English

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  • 收稿日期:  2012-10-31
  • 网络出版日期:  2012-11-29
通讯作者: 陈斌, bchen63@163.com
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