Experimental Investigation on the Solubility of CO۲ and H۲S in Some imidazolium-based Ionic Liquids

Room temperature ionic liquids (RTILs) are molten salts, which are liquid over a wide temperature range including ambient [۱]. In this work, the solubility of CO۲ and H۲S in a some ionic liquids, contain [hemim][PF۶], [hemim][BF۴], [hemim][OTf], [hemim][Tf۲N], [emim][EtSO۴], [emim][PF۳(C۲F۵)۲], [emim][BF۴], [emim][PF۶], [emim][Tf۲N], [hmim][BF۴], [hmim][PF۶], [hmim][OTf], [hmim][Tf۲N], [Omim][BF۴], [Omim][PF۶], [Omim][OTf], [Omim][Tf۲N] at temperature ۳۰۳.۱۵ K and pressures up to ۱.۵ MPa were experimentally measured. The solubility data were correlated using the Krichevsky–Kasarnovsky and also pitzer equations and Henry’s law constants were obtained. Then the results interpreted by interaction parameters and free space in the solvent related to molecular structure of solvent, and compared with each other and other data in the literature.

کلیدواژه ها:

ionic liquids ، Gas Solubility ، Physical solvent. Modeling