کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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231318 | 1427430 | 2010 | 6 صفحه PDF | دانلود رایگان |
We measured the density and liquid-phase CO2 mole fraction of CO2-expanded ketones (acetone, methyl ethyl ketone, methyl propyl ketone, methyl butyl ketone, methyl i-propyl ketone, and t-methyl butyl ketone) at 40 °C and evaluated the expansion coefficient on the basis of the experimental results. Volume expansion was slow in the region of a low carbon dioxide mole fraction (<0.7) but rapid in the region of a high carbon dioxide mole fraction (>0.7). The dependence of the expansion coefficient on the carbon dioxide mole fraction could be attributed to the number of molecules in a certain volume. These phenomena were inferred from the partial molar volume estimated using the Peng–Robinson equation of state (PR-EOS).
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Journal: The Journal of Supercritical Fluids - Volume 55, Issue 1, November 2010, Pages 71–76