TEMPERATURE DEPENDENCE OF EXCESS THERMODYNAMIC FUNCTIONS OF HYDROCARBON MIXTURES
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概要
- 論文の詳細を見る
The Wilson equation is used to interrelate three different excess thermodynamic properties (the excess Gibbs free energy, the excess enthalpy of mixing, and the excess heat capacity) for four binary hydrocarbon systems : n-heptane-toluene, methylcyclohexane-toluene, cyclohexane-n-heptane and n-heptane-methylcyclohexane. It is assumed that the Wilson parameters are temperature-dependent. Calculated results are compared with experimental data by two methods : (I) the parameters vary linearly with temperature. (II) the parameters are given by a quadratic function of temperature. The methods (I) and (II) give a good simultaneous representation of the excess Gibbs free energy and the heat of mixing data for all the systems. The method (I) does not predict well the excess heat capacity data for the three other systems, except for the n-heptane-methylcyclohexane, but the method (II) does so with good accuracy.
- 公益社団法人 化学工学会の論文
著者
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YAMADA TOSHIRO
Department of Chemical Engineering, Kanazawa University
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NAGATA ISAMU
Department of Chemical Engineering, Kanazawa University
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NAGASHIMA MASATAKA
Department of Chemical Engineering, Kanazawa University
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