2026-05-05T10:08:52Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/261432025-03-26T19:10:04Zcom_10324_31661com_10324_952com_10324_894com_10324_23040com_10324_954col_10324_31662col_10324_23041

Determination of density and excess molar volume of dimethyl sulfoxide+1-allyl-3-methylimidazolium chloride mixtures at high pressure Pablo Nisa, Laura de Segovia Puras, José Juan Martín Martínez, Ángel Martín González, María del Carmen Bermejo Roda, Maria Dolores Densidades Producción Científica In this work, densities of dimethyl sulfoxide + 1-allyl-3-methylimidazolium chloride mixtures have been experimentally determined with a vibrating tube densimeter. Densities were measured at temperatures between 293.15 and 373.15 K and molar fractions of dimethyl sulfoxide xDMSO = 0, 0.05, 0.1, 0.15, 0.25, 0.5, 0.75, 0.9 and 1 at pressures in the range P = [0.1, 35] MPa. It was found that density increases with ionic liquid concentration and with pressure and decrease with temperature. Excess molar volumes were calculated resulting in negative values with a maximum of non-ideality at DMSO concentration of xDMSO = 0.5. The excess molar values were less negative at high pressures. At T = 330 K a maximum in the excess molar values was observed at several concentrations. Density was correlated as a function of temperature, pressure and concentration with an average relative deviation of 0.12%. 2017-10-05T10:27:49Z 2017 info:eu-repo/semantics/article The Journal of Supercritical Fluids, Volume 130, December 2017, Pages 76-83 0896-8446 http://uvadoc.uva.es/handle/10324/26143 10.1016/j.supflu.2017.07.040 76 83 The Journal of Supercritical Fluids 130 spa https://www.sciencedirect.com/science/article/pii/S0896844617301808 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Elsevier B.V. Attribution-NonCommercial-NoDerivatives 4.0 International Elsevier B.V. SI