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تفاصيل البطاقة الفهرسية

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Vapour pressures and excess functions of N, N, N′ , N′ -tetramethylalkanediamine + cyclohexane. A group contribution study of the N---N proximity effect

مقال من تأليف: Dahmani, Abdallah ; Jose, Jacques ; Kaci, Ahmed Ait ;

ملخص: The vapour pressuresof liquid cyclohexane + N, N, N′, N′-tetramethylalkanediamine, (CH3)2 N(CH2)uN(CH3)2 (u = 1,2) + cyclohexane mixtures were measured by a static method between 303.15 and 343.15 K at 10 K intervals. The excess molar enthalpies at 303.15 K were also measured.The molar excess Gibbs energies, calculated from the vapour-liquid equilibrium data, and the molar excess enthalpies compare satisfactorily with group contribution (DISQUAC) predictions.The proximity effect of N atoms produces a regular decrease of the interactional parameters.


لغة: إنجليزية