A study of the calcium oxide-water vapor system by means of the transpiration method.
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概要
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The system of calcium oxide and water vapor was studied using the transpiration method. Under the conditions of a temperature range from 1678 to 2016 K and <I>P</I><SUB>H<SUB>2</SUB>O</SUB> values from 1.2×10<SUP>−2</SUP> to 4.7×10<SUP>−1</SUP> atm, the predominant reaction in this system was found to be CaO(s)+H<SUB>2</SUB>O(g)=Ca(OH)<SUB>2</SUB>(g). The standard Gibbs free energy of the reaction is given by this equation: Δ<I>G</I><SUB>r</SUB><SUP>°</SUP>=(61300±820)−(12.8±0.48)<I>T</I> (cal/mol) in the present temperature range. From the thermochemical cycle, the dissociation energy, <I>D</I><SUB>0</SUB><SUP>°</SUP>(Ca–(OH)<SUB>2</SUB>), was estimated to be 206.4 kcal/mol.
- 公益社団法人 日本化学会の論文
著者
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Sata Toshiyuki
Research Laboratory Of Engineering Materials Tokyo Institute Of Technology
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Matsumoto Kazutoshi
Research Laboratory of Engineering Materials, Tokyo Institute of Technology
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