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Enthalpy Variation of the Nine Solid Phases of the Binary Molecular Alloys (n-Tricosane:n-Pentacosane) vs. Temperature

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Abstract

The enthalpy variations of pure n-tricosane (n-C23H48), pure n-pentacosane (n-C25H52) and sixteen binary mixtures were determined from 282 to 360 K. The differential enthalpy analyses were carried out on the pure components on the four terminal solid solutions, denoted βo(C23), β′o(C23), β′o(C25), βo(C25) and on the three intermediate phases, called β″1, β′1, β″2of the binary system (C23:C25) using a calorimeter of the Tian Calvet type. These variations can be represented by an analytical expression, which is derived from Einstein‘s model. The two Rotator phases β-RI and α-RII were also studied.

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Authors and Affiliations

  1. Laboratoire de Thermodynamique des Séparations, Ecole Nationale Supérieure des Industries Chimiques, Institut National Polytechnique de Lorraine, 1, rue Grandville - B. P. 451 -, F-54001, Nancy Cedex, France

    M. B. Jouti, M. Bouroukba, D. Balesdent & M. Dirand

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  1. M. B. Jouti
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  2. M. Bouroukba
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  3. D. Balesdent
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  4. M. Dirand
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Jouti, M.B., Bouroukba, M., Balesdent, D. et al. Enthalpy Variation of the Nine Solid Phases of the Binary Molecular Alloys (n-Tricosane:n-Pentacosane) vs. Temperature. Journal of Thermal Analysis and Calorimetry 54, 785–802 (1998). https://doi.org/10.1023/A:1010139803420

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