Melting properties of molten salts and ionic liquids. Chemical homology,correlation, and prediction |
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| Institution: | 1. Faculty of Engineering, Department of Mechanical Engineering, University of La Serena, P.O. Box 554, La Serena, Chile;2. Center for Technological Information (CIT), c/Monseñor Subercaseaux 667, La Serena, Chile;3. Faculty of Sciences, Department of Physics, University of La Serena, P.O. Box 554, La Serena, Chile |
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| Abstract: | The application of the concept of chemical homology to describe melting properties of molten salts and ionic liquids (ILs) is analyzed. This concept was used several years ago to correlate and predict properties of solids and more recently to correlate melting temperatures of ILs. To analyze the characteristics of the extended method, this is first applied to melting properties of organic substances for which abundant data are available. The method is extended to analyze its applicability for properties of molten salts and ILs such as glass transition temperature, heat of melting, and entropy of melting. The foundation of the chemical homology concept is revised, and the difficulties for extending the method to correlate and predict melting properties of ILs are presented. Despite the difficulties, the homology concept can still be used with some conditions and limitations that are analyzed in this article. Several correlations are proposed. |
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| Keywords: | Chemical homology Ionic liquids Molten salts Melting properties Melting temperature |
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