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

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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.
出处 《Chinese Chemical Letters》 SCIE CAS CSCD 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)
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