Solubilities and partial molar volumes of three bis(2-ethoxyethyl) ethanedioate derivatives in supercritical carbon dioxide |
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| Affiliation: | 1. Department of Chemical and Biochemical Engineering, Center for Energy Resources Engineering (CERE), Technical University of Denmark, DK-2800 Lyngby, Denmark;2. Statoil ASA, Research and Development Center, N-7005 Trondheim, Norway;1. Department of Chemistry, Faculty of Science, University of Guilan, PO Box 19141, Rasht, Iran;2. Department of Chemical Engineering, Faculty of Engineering, University of Guilan, PO Box 19141, Rasht, Iran;1. Institute of Chemistry, Saint-Petersburg State University, Saint-Petersburg 198504, Universitetskii pr. 26, Russia;2. Nafomat Group, Applied Physics Department, Santiago de Compostela University, Santiago de Compostela E-15782, Spain;3. Saint-Petersburg State Technological Institute (Technical University), Saint-Petersburg 190013, Moskovskii pr. 26, Russia |
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| Abstract: | Three new CO2-philic bis(2-ethoxyethyl) ethanedioate derivatives, bis(2-(2-methoxyethoxy)ethyl) ethanedioate (compound 1), bis(2-(2-ethoxyethoxy)ethyl) ethanedioate (compound 2), and bis(2-(2-butoxyethoxy)ethyl) ethanedioate (compound 3), were designed and synthesized and their solubilities in supercritical carbon dioxide (scCO2) were then measured at different temperatures (313, 323, 333) K over the pressure range (8.9 to 13.9) MPa. The measured solubility data were correlated with five different theoretical semi-empirical models (Chrastil, kJ, SS, MST, JCF) and satisfactory agreements were obtained. The JCF model provided the best fit and the lowest average absolute relative deviation (AARD) varied from (3.58 to 6.80)%. Furthermore, the partial molar volumes of three compounds in the supercritical phase were also calculated according to the Kumar and Johnston theory, and the values were between −(19105 and 3510) cm3 · mol−1. |
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| Keywords: | Supercritical carbon dioxide Solubility Correlation Partial molar volume |
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