Jing Peng, Haijian Yang, Hongwei Yang
Apr 1, 2015
Citations
0
Influential Citations
10
Citations
Journal
The Journal of Chemical Thermodynamics
Abstract
Abstract Three new CO 2 -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 (scCO 2 ) 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) cm 3 · mol −1 .