Effect of Molecular Size of Solutes on Their Partial Molar Volumes in Supercritical n-Pentane  

作　　者：Xiao Gang ZHANG Hai Fei ZHANG Bu Xing HAN Bao Ke ZHANG Qing HUO 

机构地区：[1]Center for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080 [2]Institute of Chemistry and Engineering,Beijing United University,Beijing 100023

出　　处：《Chinese Chemical Letters》2001年第1期81-82,共2页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China for the financial support(29725308,29633020)

摘　　要：The densities of n-pentane, methane-n-pentane, propane-n-pentane, n-heptane-n-pentane, and n-decane-n-pentane binary mixtures were determined at 476.5K in the pressure range from 2 to 5 MPa. The partial molar volumes of the solutes in n-pentane were calculated using the density data. It was found that the partial molar volumes of methane and propane are positive, while those of n-heptane and n-decane are negative.The densities of n-pentane, methane-n-pentane, propane-n-pentane, n-heptane-n-pentane, and n-decane-n-pentane binary mixtures were determined at 476.5K in the pressure range from 2 to 5 MPa. The partial molar volumes of the solutes in n-pentane were calculated using the density data. It was found that the partial molar volumes of methane and propane are positive, while those of n-heptane and n-decane are negative.

分 类 号：O62[理学—有机化学]