Volumetric properties of the binary liquid mixtures of N,N-dimethylacetamide plus benzene, plus toluene, or plus ethylbenzene at different temperatures and atmospheric pressure
Volumetric properties of the binary liquid mixtures of N,N-dimethylacetamide plus benzene, plus toluene, or plus ethylbenzene at different temperatures and atmospheric pressure
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DOI：
10.1016/j.molliq.2007.12.005
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发表时间：
2008-04-15
影响因子：
6
通讯作者：
Wang, Zhengwu
中科院分区：
文献类型：
--
作者：
Chen, Fushan;Wu, Jiang;Wang, Zhengwu
在(293.15,298.15,303.15,308.15,313.15,318.15和323.15)K和大气压下，测量了N，N-二甲基乙酰胺(DMA)与苯、甲苯和乙苯的二元混合物的密度，包括纯液体的密度。根据实验数据，用不同的方法计算了整个组成范围内的过剩摩尔体积V-m(E)。在所研究的各个温度下，所有混合物的V-m(E)值均为负值，并且随着温度的升高而减小，表明DMA与芳香烃分子之间存在特定的相互作用。V值的负偏差程度依次为：甲苯和GT；苯和GT；乙苯。(C)2008年，爱思唯尔出版。
The densities of binary mixtures of N, N-dimethylacetamide (DMA) with benzene, toluene and ethylbenzene, including those of pure liquids, over the entire composition range were measured at temperatures (293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K and atmospheric pressure. From the experimental data, the excess molar volume, V-m(E), were calculated using different methods over whole composition range. The V-m(E) values were found negative for all the mixtures at each temperature studied, and decrease with rising temperature, indicating the presence of specific interactions between DMA and aromatic hydrocarbon molecules. The extent of negative deviations in V., values follows the order: toluene > benzene > ethylbenzene. (c) 2008 Published by Elsevier B.V.