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تفاصيل البطاقة الفهرسية

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Excess properties of N,N,N′ ,N′ -tetramethylalkanediamine + n-heptane

A study of the N-N proximity effect

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

ملخص: The vapour pressure of liquid n-heptane + N,N,N′,N′ - tetramethylalkanediamine, (CH3)2 N-(CH2)u_N(CH3)2 (u = 1,2), mixtures were measured by a static method in the 303.15-343.15 K range at 10 K intervals. The excess molar enthalpies were also measured at 303.15 K.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 interaction parameters.


لغة: إنجليزية