Effect of Molecular Size of Solutes on Their Partial Molar Volumes in Supercritical n-Pentane |
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| Authors: | Xiao Gang ZHANG Hai Fei ZHANG Bu Xing HAN Bao Ke ZHANG Qing HUO Center for Molecular Sciences |
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| Institution: | Xiao Gang ZHANG1,Hai Fei ZHANG1,Bu Xing HAN1*,Bao Ke ZHANG2,Qing HUO2 1Center for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080 2Institute of Chemistry and Engineering,Beijing United University,Beijing 100 |
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| Abstract: | 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. |
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| Keywords: | Density supercritical fluid partial molar volum |
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