Dehydroxylation of dioctahedral smectites in water vapor atmosphere

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• 作者：Katja Emmerich^a ; Annett Steudel^a ; ^{annett.steudel@kit.edu} ; Daniela Merz^b
• 关键词：Smectite ; Thermal analysis ; Water vapor atmosphere ; Trans-vacant ; Cis-vacant
• 刊名：Applied Clay Science
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：137
• 期：Complete
• 页码：1-5
• 全文大小：1127 K
• 卷排序：137

文摘

Water vapor delayed dehydroxylation (DHX) of montmorillonites by 50 °C. DHX boundary of trans- and cis-vacant layers shifted 50 to 75 °C under water vapor. Partial melting of Na-saturated montmorillonite yielded hollow spheres and bubbles. The heating atmosphere didn't influence the formation of high temperature phases. High temperature phases are cristobalite, spinel, hematite, and amorphous material.