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Type: Artigo de periódico
Title: High pressure phase behavior of carbon dioxide in 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids
Author: Carvalho, PJ
Alvarez, VH
Machado, JJB
Pauly, J
Daridon, JL
Marrucho, IM
Aznar, M
Coutinho, JAP
Abstract: New standards concerning environmental and safety issues are creating an increasing interest on ionic liquids as alternative solvents for a wide range of industrial applications. In this work, a new apparatus developed to measure vapor-liquid phase equilibrium in a wide range of pressures and temperatures was used to measure the phase behavior of the binary systems of carbon dioxide (CO(2))+1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide ([C(2) mim][Tf(2)N]) and CO(2)+1-methyl-3-pentyl-imidazolium bis(trifluoromethylsulfonyl)imide ([C(5) mim][Tf(2)N]) at temperatures up to 363 K and pressures up to 50 MPa. A thermodynamic consistency test, developed for systems with incomplete PTxy data and based on the Gibbs-Duhem equation, was applied to the experimental data measured in this work and the Peng-Robinson EoS using the Wong-Sandler mixing rule was used to describe the experimental data with excellent results. (C) 2008 Elsevier B.V. All rights reserved.
Subject: 1-Ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide 1-Methyl-3-pentyl-imidazolium bis(trifluoromethylsulfonyl)imide
Carbon dioxide
Phase behavior
High pressure
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Supercritical Fluids. Elsevier Science Bv, v. 48, n. 2, n. 99, n. 107, 2009.
Rights: fechado
Identifier DOI: 10.1016/j.supflu.2008.10.012
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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