(Liquid + liquid) phase equilibria of 1-alkyl-3-methylimidazolium methylsulfate with alcohols,or ethers,or ketones |
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| Affiliation: | 1. Faculty of Chemistry, Physical Chemistry Division, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;2. COSMOlogic GmbH&Co. KG, Burscheider Str. 515, D-51381 Leverkusen, Germany;1. Centre for Gas Hydrate Research, Institute of Petroleum Engineering, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom;2. Hydrafact Ltd., Heriot-Watt University Research Park, Edinburgh EH14 4AP, United Kingdom;1. Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China;2. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;1. Université de Lorraine, Laboratoire Matériaux Optiques, Photonique et Systèmes, EA 4423, 2 rue Edouard Belin, 57070 Metz, France;2. Supélec, Laboratoire Matériaux Optiques, Photonique et Systèmes, EA 4423, 2 rue Edouard Belin, 57070 Metz, France;1. School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea;2. Climate Change Research Division, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea;1. School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea;2. Offshore Plant Resources R&D Center, Korea Institute of Industrial Technology, Busan 618-230, Republic of Korea |
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| Abstract: | Solubilities of binary mixtures that contain a room-temperature ionic liquid and an organic solvent – namely, 1,3-dimethylimidazolium methylsulfate, [mmim][CH3SO4], or 1-butyl-3-methylimidazolium methylsulfate, [bmim][CH3SO4] with an alcohol (hexan-1-ol, or octan-1-ol, or nonan-1-ol, or decan-1-ol), or an ether (dipropyl ether, or dibutyl ether, or methyl-1,1-dimethylethyl ether, or methyl-1,1-dimethylpropyl ether), or a ketone (pentan-2-one, or pentan-3-one, or hexan-2-one, or heptan-4-one, or cyclopentanone) – have been measured by a visual method from T = 270 K to the boiling temperature of the solvent. The (liquid + liquid) equilibria curves were predicted by the COSMO-RS method. For [bmim][CH3SO4], the COSMO-RS predictions correspond better with experimental results than do the predictions for [mmim][CH3SO4].Complete miscibility has been observed in the systems of [mmim][CH3SO4] with water and with alcohols ranging from methanol to octan-1-ol and that of [bmim][CH3SO4] with water and with alcohols ranging from methanol to decan-1-ol at the temperature T = 310 K. |
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