Solubilities and partial molar volumes of new CO2-philic propane derivatives in supercritical carbon dioxide

•Three new CO2-philic propane derivatives were designed and synthesized.•The tested solubility data were calculated and correlated with three models.•Best agreement was obtained with JCF model between the tested and calculated data.•Symmetry influence of compound structure on solubility in scCO2 has been discussed.•The partial molar volumes V¯2 for three compounds were estimated.

Three new potent CO2-philic propane derivatives were designed and synthesized. Their structures were characterized by NMR, FTIR, and elemental analysis. Phase behavior of the three compounds was investigated at T = (313, 323, 333, 343 or 353) K and pressures from (7.7 to 12.1) MPa in supercritical carbon dioxide. The measured solubility data were correlated using three models: Chrastil, Sung and Shim (SS), and Jouyban–Chan–Foster (JCF) semi-empirical models, and satisfied agreements were obtained. Solubility data were also utilized to estimate the partial molar volume V¯2 for each compound in the supercritical phase using the theory developed by Kumar and Johnston.

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