Hydration enthalpy of hydrotalcite low-temperature metaphases

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概要

• 論文の詳細を見る

• Enthalpies of hydration of low-temperature hydrotalcite(HT) metaphases have been measured by means of the adiabatic water-vapor absorption calorimeter. The metaphases were characterized by the Mg/Al ratio of 3 : 1 and CO32− interlayer group. The hydration heat for HT-B (partially dehydroxylated HT with bidentate bonded CO32−) is 2-3 times larger than that of HT-D (dehydrated HT), if they are treated at the same dehydration temperature. Large absolute values of hydration heat, namely 398±4 and 508±10Jg−1, were obtained for the HT-B at respective low dehydration temperatures, 70 and 110°C . This may promise the HT-B to be a new prospective heat exchanger usable at relatively low temperatures.

• 日本鉱物科学会の論文

著者

• Petrova Nadia

  Department Of Mineralogy Sofia University "st. Kl Ohridski

• MIZOTA Tadato

  Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi Universi

• Mizota Tadato

  Department Of Advanced Materials Science And Engineering Faculty Of Engineering Yamaguchi University

• STANIROVA Tsveta

  Department of Mineralogy, Sofia University "St. KL Ohridski"

• KIROV Georgi

  Department of Mineralogy, Sofia University "St. KL Ohridski"

• Mizota T

  Department Of Advanced Materials Science And Engineering Faculty Of Engineering Yamaguchi University

• Kirov Georgi

  Department Of Mineralogy Sofia University "st. Kl Ohridski

• Stanirova Tsveta

  Department Of Mineralogy Sofia University "st. Kl Ohridski

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