Ionic liquids for CO2 capture—Development and progress

Hasib-ur-Rahman, Muhammad; Siaj, Mohamed; Larachi, Faı̈çal

doi:10.1016/j.cep.2010.03.008

Cited by 589 publications

(370 citation statements)

References 70 publications

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“…SILMs not only guarantee minimal membrane liquid loss through solvent evaporation, but also allow more stable membranes due to the higher viscosity of ILs and greater capillary forces between the desired ionic liquid and the support membrane. 11,12 There has been a growing interest in the use of ILs in supported liquid membranes, particularly for CO 2 separation, not only due to the high levels of solubility and selectivity of CO 2 in these fluids relative to the other gases, namely CH 4 and N 2 , [13][14][15][16] but also because of the ability to tailor many of their physical and chemical properties by combining different cations and anions or by adding functional groups. 17,18 Consequently, several studies on the permeation properties of gases through SILM systems have explored the effect of the IL structure.…”

Section: Introductionmentioning

confidence: 99%

CO2 separation applying ionic liquid mixtures: the effect of mixing different anions on gas permeation through supported ionic liquid membranes

et al. 2013

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In order to increase flexibility in tailoring the permeability and selectivity of supported ionic liquid membranes (SILMs) for flue gas separation and natural gas purification, this work explores the use of ionic liquid mixtures. For that purpose, gas permeation properties of CO 2 , CH 4 were measured at 293 K using a time lag apparatus. In addition to gas permeation results, the thermophysical properties of those mixtures, namely viscosity and density, were also determined so that trends between the two types of properties could be evaluated. The results show that mixing [Ac] or

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Section: Introductionmentioning

confidence: 99%

CO2 separation applying ionic liquid mixtures: the effect of mixing different anions on gas permeation through supported ionic liquid membranes

et al. 2013

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“…110 In this context, ILs are considered as potential replacements for volatile amines due to their higher thermal stability and lower volatility. [111][112][113][114] In 2002, Bates et al proved that amine functionalization enhances the CO 2 uptake capacity of ILs considerably as compared to non-functionalized ILs. 115 While a number of experimental and theoretical studies had been performed addressing different ILs with primary and secondary amines attached to the IL cation or anion in the bulk, a detailed investigation at the gas-liquid interface had been missing.…”

Section: Reaction Of Gas Phase Molecules With An Il: Co 2 Capturementioning

confidence: 99%

Perspective: Chemical reactions in ionic liquids monitored through the gas (vacuum)/liquid interface

Maier

Niedermaier

Steinrück

2017

The Journal of Chemical Physics

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This perspective analyzes the potential of X-ray photoelectron spectroscopy under ultrahigh vacuum (UHV) conditions to follow chemical reactions in ionic liquids in situ. Traditionally, only reactions occurring on solid surfaces were investigated by X-ray photoelectron spectroscopy (XPS) in situ. This was due to the high vapor pressures of common liquids or solvents, which are not compatible with the required UHV conditions. It was only recently realized that the situation is very different when studying reactions in Ionic Liquids (ILs), which have an inherently low vapor pressure, and first studies have been performed within the last years. Compared to classical spectroscopy techniques used to monitor chemical reactions, the advantage of XPS is that through the analysis of their core levels all relevant elements can be quantified and their chemical state can be analyzed under well-defined (ultraclean) conditions. In this perspective, we cover six very different reactions which occur in the IL, with the IL, or at an IL/support interface, demonstrating the outstanding potential of in situ XPS to gain insights into liquid phase reactions in the near-surface region.

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“…Measurements were performed using the high-pressure magnetic suspension balance (MSB) sorption device by Rubotherm Präzisionsmesstechnik GmbH apparatus.This equipment is specially designed to measure sample mass change with high precision upon CO 2 …”

Section: Co 2 Solubility Measurementsmentioning

confidence: 99%

“…A huge interest in using ionic liquids as an alternative medium for CO 2 capture has become apparent because of its potential advantages compared to other conventional solvents, such as MEA 2 . There are many ways in which an ionic liquid can be defined, and perhaps the most widely accepted definition is, "A material that is composed solely of ions" 2 .…”

Section: Introductionmentioning

confidence: 99%

Applications of Ionic Liquids in Gas Processing

Karadaş

Jacquemin

et al. 2012

Proceedings of the 3rd Gas Processing Symposium

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Over the last decade ionic liquids have grown from relatively poorly understood materials to become integrated into industrial applications. These materials are, quite simply, comprised entirely of ions, and are liquid at room temperature. Given their nature, they have been described as "designer" solvents, with "tuneable" features that can be adjusted to suit the requirements of a particular process. A huge interest in using ionic liquids as an alternative medium for gas separation has become apparent because of such properties. For example, the high thermal stability of ionic liquids provide considerable potential to utilize them for CO 2 capture application. This paper investigates the potential of ionic liquids in gas processing applications. Initial screenings of the ability of ionic liquids for CO 2 separation up to 100 bar are presented.

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Ionic liquids for CO2 capture—Development and progress

Cited by 589 publications

References 70 publications

CO2 separation applying ionic liquid mixtures: the effect of mixing different anions on gas permeation through supported ionic liquid membranes

CO2 separation applying ionic liquid mixtures: the effect of mixing different anions on gas permeation through supported ionic liquid membranes

Perspective: Chemical reactions in ionic liquids monitored through the gas (vacuum)/liquid interface

Applications of Ionic Liquids in Gas Processing

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