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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >EXCESS PROPERTIES OF N,N,N',N'-TETRAMETHYLALKANEDIAMINE PLUS N-HEPTANE - A STUDY OF THE N-N PROXIMITY EFFECT
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EXCESS PROPERTIES OF N,N,N',N'-TETRAMETHYLALKANEDIAMINE PLUS N-HEPTANE - A STUDY OF THE N-N PROXIMITY EFFECT

机译:N,N,N',N'-四甲基烷基乙二胺加正庚烷的过量性质-N-N邻近效应的研究

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摘要

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. (C) 1997 Elsevier Science B.V. [References: 18]
机译:液态正庚烷+ N,N,N',N'-四甲基链烷二胺,(CH3)(2)N-(CH2)(u-)N(CH3)(2)的蒸气压(u = 1,2)通过静态方法在303.15-343.15 K范围内以10 K的间隔测量混合物。过量的摩尔焓也在303.15 K处测量。根据蒸气-液体平衡数据和摩尔过量的焓计算得出的摩尔过量的吉布斯能量与基团贡献(DISQUAC)的预测令人满意。 N原子的邻近效应会导致相互作用参数的规则减小。 (C)1997 Elsevier Science B.V. [参考文献:18]

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