Dispersion Property of CO_2 in Oil. Part 3: Aggregation of CO_2 Molecule in Organic Liquid at Near Critical and Supercritical Condition of CO_2

摘要

To study the dispersion property of CO_2 in organic liquids, the solubility of CO_2, the volume of CO_2 + organic liquids under different pressure at 318.15K were measured and the radial distribution function of CO_2 molecule aggregate in the organic liquids was calculated by molecule dynamic simulation. The results show that the aggregate of CO_2 molecules in the organic liquids is formed obviously; the aggregation and disperse property of CO_2 molecule in the organic liquids is affected by the structure and polarity of the organic molecule at near critical and supercritical condition of CO_2 dominantly.