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Effect of cations on thermal properties of montmorillonite

Effect of cations on thermal properties of montmorillonite
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摘要 Based on comparison and analysis on structural cations of montmorillonite in bentonite samples collected from several typical areas in Jilin Province, relationships among type and quantity of interlayer/tetrahedral/octahedral cations and temperature and activation energy of removal of bound and hydroxyl water were investigated. The results show that the interlayer cations not only play decisive roles on removal temperature of bound water, but also influence dehydroxylation temperature and activation energy of montmorillonite. Type of octahedral cations also has an effect on dehydroxylation process. Based on comparison and analysis on structural cations of montmorillonite in bentonite samples col- lected from several typical areas in Jilin Province, relationships among type and quantity of interlayer/tetrahe- dral/octahedral cations and temperature and activation energy of removal of bound and hydroxyl water were in- vestigated. The results show that the interlayer cations not only play decisive roles on removal temperature of bound water, but also influence dehydroxylation temperature and activation energy of montmorillonite. Type of octahedral cations also has an effect on dehydroxylation process.
出处 《Global Geology》 2013年第2期88-93,共6页 世界地质(英文版)
关键词 MONTMORILLONITE CATION interlayer water structural water 层间阳离子 蒙脱石 热性能 羟基化 典型地区 束缚水 八面体 活化能
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