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https://hdl.handle.net/10216/104885
Author(s): | Marina S. Manic António J. Queimada Eugénia A. Macedo Vesna Najdanovic-Visak |
Title: | High-pressure solubilities of carbon dioxide in ionic liquids based on bis(trifluoromethylsulfonyl)imide and chloride |
Issue Date: | 2012 |
Abstract: | In this work, the solubility of carbon dioxide (CO2) in seven different ionic liquids (ILs) was measured using a high-pressure sapphire cell, in the pressure range of 8-22 MPa and at two temperatures, 313.2 K and 323.2 K. In order to discuss the influence of the cation, ILs based on bis(trifluoromethylsulfonyl)imide. [NTf2] were chosen. They were coupled with 1-butyl-3-methylimidazolium, [C(4)mim](+), 1-decyl-3-methylimidazolium, [C(10)mim](+), 1-butyl-methylpyrrolidinium, [Pyrr(4,1)](+), butyltrimethylammonium, [N-4,N-1,N-1,N-1](+), methyltrioctylammonium, [N-1,N-8,N-8,N-8](+) and trihexyltetradecylphosphonium, [P-6,P-6,P-6,P-14](+)cation. The phosphonium based cation was also combined with chloride, [Cl](-), giving an opportunity to discuss the influence of an anion as well. The solubility data obtained in this work were used to evaluate the importance of explicitly including association for describing such systems. For that purpose, we compared the solubility modelling results from two cubic equations of state (Peng-Robinson and Soave-Redlich-Kwong) with those from the Cubic Plus Association Equation of State (CPA EoS) using different association schemes for the ionic liquids. We found that for such systems there is no major advantage in considering ILs as associating components. |
Subject: | Ciências Tecnológicas, Ciências da engenharia e tecnologias Technological sciences, Engineering and technology |
Scientific areas: | Ciências da engenharia e tecnologias Engineering and technology |
URI: | https://repositorio-aberto.up.pt/handle/10216/104885 |
Related Information: | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/PEst-C/EQB/LA0020/2011/Projeto Estratégico-LA 20 - 2011-2012/LA 20 |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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