Next Article in Journal
Functional Films from Silica/Polymer Nanoparticles
Previous Article in Journal
Effect of Receptor Structure and Length on the Wrapping of a Nanoparticle by a Lipid Membrane
Open AccessArticle

CO2 Capture and Separation Properties in the Ionic Liquid 1-n-Butyl-3-Methylimidazolium Nonafluorobutylsulfonate

by Lingyun Zhou 1,2, Jing Fan 1,* and Xiaomin Shang 1
1
School of Environment, Henan Normal University, Xinxiang 453007, Henan, China
2
College of Resource and Environment, Henan Institute of Science and Technology, Xinxiang 453007, Henan, China
*
Author to whom correspondence should be addressed.
Materials 2014, 7(5), 3867-3880; https://doi.org/10.3390/ma7053867
Received: 4 April 2014 / Revised: 4 May 2014 / Accepted: 5 May 2014 / Published: 14 May 2014
(This article belongs to the Section Energy Materials)
Recently, the use of ionic liquids (ILs) for carbon capture and separation processes has gained great interest by many researchers due to the high solubility of CO2 in ILs. In the present work, solubility measurements of CO2 in the novel IL 1-n-butyl-3-methylimidazolium nonafluorobutylsulfonate [C4mim][CF3CF2CF2CF2SO3] were performed with a high-pressure view-cell technique in the temperature range from 293.15 to 343.15 K and pressures up to about 4.2 MPa. For comparison, solubilities of H2, N2, and O2 in the IL were also measured at 323.15 K via the same procedure. The Krichevsky-Kasarnovsky equation was employed to correlate the measured solubility data. Henry’s law constants, enthalpies, and entropies of absorption for CO2 in the IL were also determined and presented. The CO2 solubility in this IL was compared with other ILs sharing the same cation. It was shown that the solubility of CO2 in these ILs follows the sequence: [C4mim][CF3CF2CF2CF2SO3] ≈ [C4mim][Tf2N] > [C4mim][CF3CF2CF2COO] > [C4mim][BF4], and the solubility selectivity of CO2 relative to O2, N2, and H2 in [C4mim][CF3CF2CF2CF2SO3] was 8, 16, and 22, respectively. Furthermore, this IL is regenerable and exhibits good stability. Therefore, the IL reported here would be a promising sorbent for CO2. View Full-Text
Keywords: carbon capture; selectivity; ionic liquid; Krichevsky-Kasarnovsky equation; 1-n-Butyl-3-methylimidazolium nonafluorobutylsulfonate carbon capture; selectivity; ionic liquid; Krichevsky-Kasarnovsky equation; 1-n-Butyl-3-methylimidazolium nonafluorobutylsulfonate
MDPI and ACS Style

Zhou, L.; Fan, J.; Shang, X. CO2 Capture and Separation Properties in the Ionic Liquid 1-n-Butyl-3-Methylimidazolium Nonafluorobutylsulfonate. Materials 2014, 7, 3867-3880.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop