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]Shaoxing Univ, Coll Chem & Chem Engn, Zhejiang 31200, Peoples R 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：SCI-EXPANDED(收录号：WOS:000247431400010)、、WOS

语种：英文

外文关键词：N-methyl-2-pyrrolidone; xylene; binary mixture; excess volume; partial molar volume; temperature dependence

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, V-m(E), and partial molar volumes, V-m,V-1 and V-m,V-2 were calculated in 2, 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. The extent of negative deviations in V-m(E) values follows the order: p-xylene > m-xylene > o-xylene. The variation of in these parameters with composition and temperature of the mixtures has been discussed. (c) 2006 Published by Elsevier Ltd.