文献类型：期刊文献

英文题名：A study of densities and volumetric properties of binary mixtures of N-methyl-2-pyrrolidone with xylene at different temperatures and atmospheric pressure

作者：Chen, Jianhui[1]; Shen, Runpu[2]; Liu, Wei[2]; Yu, Guoqi[1]

机构：[1] Zhejiang Medicine Co. Ltd., Xinchang Pharmaceutical Factory, China; [2] College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China

年份：2007

卷号：39

期号：6

起止页码：934

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20071710570563)、Scopus(收录号：2-s2.0-34247279294)

语种：英文

外文关键词：Atmospheric pressure - Binary mixtures - Density (specific gravity) - Thermal effects - Volumetric analysis

外文摘要：The densities of binary mixtures of N-methyl-2-pyrrolidone (NMP) with o-xylene, m-xylene, and p-xylene, including those of pure liquids, over the entire composition range were measured at T = (293.15, 303.15, 313.15, 323.15, 333.15, 343.15, and 353.15) K and atmospheric pressure. From the experimental data, the excess molar volume, VmE, and partial molar volumes, Vm,1 and Vm,2, were calculated over whole composition range. The VmE values were found negative for all the mixtures at each temperature studied, and decrease with rising temperature. The extent of negative deviations in VmE values follows the order: p-xylene > m-xylene > o-xylene. The variation of these parameters with composition and temperature of the mixtures has been discussed. ? 2006.