Journal ArticleDOI
Room-Temperature Ionic Liquids: Temperature Dependence of Gas Solubility Selectivity
TLDR
In this article, the authors studied the bulk fluid solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) gases in the imidazolium-based RTILs.Abstract:
This study focuses on bulk fluid solubility of carbon dioxide (CO2), methane (CH4), hydrogen (H2), and nitrogen (N2) gases in the imidazolium-based RTILs: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]), 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), and 1,3-dimethylimidazolium methyl sulfate ([mmim][MeSO4]) as a function of temperature (25, 40, 55, and 70 °C) at near-atmospheric pressures. The experimental behaviors are explained in terms of thermodynamic relationships that account for the negligible vapor pressure of the RTIL as well as the low solubilities of the gases. Results show that, as temperature increases, the solubility of CO2 decreases in all RTILs, the solubility of CH4 remains constant in [emim][Tf2N] and [hmim][Tf2N] but increases in [mmim][MeSO4] and [emim][BF4], and the solubility of N2 and H2 increases. Also, the ideal solubility selectivity (ratio of pure-componen...read more
Citations
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Journal ArticleDOI
An overview of CO2 capture technologies
Niall MacDowell,Nick Florin,Antoine Buchard,Jason P. Hallett,Amparo Galindo,George Jackson,Claire S. Adjiman,Charlotte K. Williams,Nilay Shah,Paul S. Fennell +9 more
TL;DR: Three of the leading options for large scale CO2 capture are reviewed from a technical perspective, including solvent-based chemisorption techniques, carbonate looping technology, and the so-called oxyfuel process.
Journal ArticleDOI
State-of-the-Art of CO2 Capture with Ionic Liquids
TL;DR: In this article, the authors provide a detailed overview of the achievements and difficulties that has been encountered in finding a suitable ionic liquid for CO2 capture from flue-gas streams.
Journal ArticleDOI
Guide to CO2 Separations in Imidazolium-Based Room-Temperature Ionic Liquids
Jason E. Bara,Trevor K. Carlisle,Christopher J. Gabriel,Dean Camper,Alexia Finotello,Douglas L. Gin,Richard D. Noble +6 more
TL;DR: In this paper, the authors used regular solution theory and group contributions to predict and explain CO2 solubility and selectivity in room-temperature ionic liquids (RTILs).
Journal ArticleDOI
Ionic-Liquid-Based CO2 Capture Systems: Structure, Interaction and Process
Shaojuan Zeng,Xiangping Zhang,Lu Bai,Xiaochun Zhang,Hui Wang,Jianji Wang,Di Bao,Mengdie Li,Xinyan Liu,Suojiang Zhang +9 more
TL;DR: The effects of anions, cations and functional groups on CO2 solubility and selectivity ofILs, as well as the studies on degradability of ILs are reviewed, and the recent developments on functionalized ILs, IL- based solvents, and IL-based membranes are discussed.
References
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Journal ArticleDOI
CO2 Capture by a Task-Specific Ionic Liquid
TL;DR: A new room temperature ionic liquid incorporating a cation with an appended amine group is produced, comparable in efficiency for CO2 capture to commercial amine sequestering reagents, and yet is nonvolatile and does not require water to function.
Journal ArticleDOI
Solubilities and Thermodynamic Properties of Gases in the Ionic Liquid 1-n-Butyl-3-methylimidazolium Hexafluorophosphate
TL;DR: In this paper, the solubility of nine different gases in 1-n-butyl-3-methylimidazolium hexafluorophosphate was investigated.
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Liquid Phase Behavior of Imidazolium-Based Ionic Liquids with Alcohols
TL;DR: In this paper, the impact of different factors on the phase behavior of imidazolium-based ionic liquids with alcohols was studied, and all systems examined showed upper critical solution temperature (UCST) behavior, with low solubility of the ionic liquid in the alcohol.
Journal ArticleDOI
Gas Solubilities in Room-Temperature Ionic Liquids
TL;DR: In this paper, the authors used regular solution theory to predict the solubility of room-temperature ionic liquids in RTILs at low pressure and temperature changes in CO2 and C2H4 measurements.
Journal ArticleDOI
Regular Solution Theory and CO2 Gas Solubility in Room-Temperature Ionic Liquids
TL;DR: In this article, the authors explored the arguments for using solubility parameters and the regular solution theory for modeling gas solubilities in five different room-temperature ionic liquids (RTILs) at low partial pressures and low mole fractions.