Amine-Ionic Liquid Blends in CO<sub>2</sub> Capture Process for Sustainable Energy and Environment

Perumal, Muthumari; Jayaraman, Dhanalakshmi

doi:10.1177/0958305x211070782

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…Ionic liquids have proven to be remarkably versatile materials, finding application in areas ranging from supercapacitor electrolytes , to organic synthesis, − carbon capture, − and ion propulsion. , Despite the broad utility of these materials, much remains to be understood about their properties from a fundamental perspective. For example, there has remained significant uncertainty over the extent to which RTILs dissociate until recently, and the relative importance of association and dissociation versus ion translational mobility in mediating conductivity remains an open question.…”

Section: Introductionmentioning

confidence: 99%

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

et al. 2023

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We report on dilution-dependent changes in the local environments of chromophores incorporated into roomtemperature ionic liquid (RTIL)-molecular solvent binary systems where the ionic liquid cation and molecular solvent possess the same alkyl chain length. We have used the RTIL 1-decyl-1methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (DMPyrr + TFSI − ) and the molecular solvent 1-decanol. Perylene was used as a non-polar probe, and cresyl violet (CV + ) was used as a polar probe chromophore. We observe that in both regions there is a change in the chromophore local environments with increasing 1-decanol content. The changes in the nonpolar regions of the binary RTIL-molecular solvent system occur at a lower 1-decanol concentration than changes in the polar regions. Both chromophores reorient as oblate rotors in this binary system, allowing detailed information on the relative values of the Cartesian components of the rotational diffusion constants to be extracted from the experimental data. The induced free charge density gradient, ρ f , known to exist in RTILs, persists to high 1-decanol content (1decanol mole fraction of 0.75), with the structural details of the gradient being reflected in depth-dependent changes in the Cartesian components of the rotational diffusion constants of CV + . This is the first time that changes in molecular organization have been correlated with ρ f .

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Section: Introductionmentioning

confidence: 99%

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

et al. 2023

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“…Since then, numerous studies focusing on ILs' incorporation into solid porous materials such as zeolites, silica and AC for CO 2 adsorption have been published [81][82][83]. Subsequently, the research has been extended to blended solvents by combining ILs with different liquid materials including deep eutectic solvents (DES) and commercial amines [66,84]. In recent years, there has been notable shift on ILs hybridization leading to the development of IL-membrane for selective separation [85].…”

Section: Application Of Ils Hybrid Materials In Carbon Dioxidementioning

confidence: 99%

Ionic Liquids Hybridization for Carbon Dioxide Capture: A Review

Ab Rahim,

Yunus,

Bustam

2023

Molecules

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CO2 absorption has been driven by the need for efficient and environmentally sustainable CO2 capture technologies. The development in the synthesis of ionic liquids (ILs) has attracted immense attention due to the possibility of obtaining compounds with designated properties. This allows ILs to be used in various applications including, but not limited to, biomass pretreatment, catalysis, additive in lubricants and dye-sensitive solar cell (DSSC). The utilization of ILs to capture carbon dioxide (CO2) is one of the most well-known processes in an effort to improve the quality of natural gas and to reduce the green gases emission. One of the key advantages of ILs relies on their low vapor pressure and high thermal stability properties. Unlike any other traditional solvents, ILs exhibit high solubility and selectivity towards CO2. Frequently studied ILs for CO2 absorption include imidazolium-based ILs such as [HMIM][Tf2N] and [BMIM][OAc], as well as ILs containing amine groups such as [Cho][Gly] and [C1ImPA][Gly]. Though ILs are being considered as alternative solvents for CO2 capture, their full potential is limited by their main drawback, namely, high viscosity. Therefore, the hybridization of ILs has been introduced as a means of optimizing the performance of ILs, given their promising potential in capturing CO2. The resulting hybrid materials are expected to exhibit various ranges of chemical and physical characteristics. This review presents the works on the hybridization of ILs with numerous materials including activated carbon (AC), cellulose, metal-organic framework (MOF) and commercial amines. The primary focus of this review is to present the latest innovative solutions aimed at tackling the challenges associated with IL viscosity and to explore the influences of ILs hybridization toward CO2 capture. In addition, the development and performance of ILs for CO2 capture were explored and discussed. Lastly, the challenges in ILs hybridization were also being addressed.

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“…In this respect, ionic liquids (ILs) have emerged as an alternative absorbent for CO 2 capture due to their excellent CO 2 solubility and selectivity, negligible vapor pressure, and good recyclability. − In 1999, Winterbottom et al first discovered that ILs could effectively capture CO 2 through physical absorption. However, the CO 2 absorption capacity is relatively low by physical absorption, which cannot meet the demands of industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Novel Tetramethylammonium Cation-Based Ionic Liquid Solutions for Highly Efficient CO₂ Absorption

Liu,

Wang,

Dong

et al. 2024

Ind. Eng. Chem. Res.

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In this work, a series of novel CO 2 absorption solvents were prepared using solid tetramethylammonium cation-based ionic liquids and water. Herein, for the first time, tetramethylammonium cations-based ionic liquids ([N 1111 ][AHA], namely [N 1111 ][Py], [N 1111 ][Im], and [N 1111 ]-[1,2,4-Tz]) with aprotic heterocyclic anion were synthesized. The viscosity of these absorbents ([N 1111 ][AHA]/H 2 O), composed of different contents of [N 1111 ][AHA] and H 2 O, was measured, indicating that their viscosity was below 50 mPa•s at 313.15 K. Moreover, the anion structure significantly affected the CO 2 absorption performance. The CO 2 absorption capacity increased in the order of [N 1111presenting excellent reversibility (5 cycles). The optimal solvent composition was 80 wt % [N 1111 ][1,2,4-Tz] and 20 wt % H 2 O, yielding a CO 2 absorption capacity of 0.268 g CO 2 /g absorbent and the ideal selectivity for CO 2 /N 2 and CO 2 /O 2 was 1217.8 and 911.1, respectively, at 313.15 K and 100 kPa CO 2 . The study of the CO 2 absorption mechanism was investigated using 13 C NMR, in situ FTIR, and DFT calculations, showing that water can cooperate with ILs to absorb CO 2 . Carbamate and carbonate were formed during CO 2 absorption, which is beneficial for CO 2 capture. These novel [N 1111 ][AHA] solutions are potential absorbents for CO 2 separation in flue gas.

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Amine-Ionic Liquid Blends in CO₂ Capture Process for Sustainable Energy and Environment

Cited by 5 publications

References 51 publications

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

Ionic Liquids Hybridization for Carbon Dioxide Capture: A Review

Novel Tetramethylammonium Cation-Based Ionic Liquid Solutions for Highly Efficient CO₂ Absorption

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Amine-Ionic Liquid Blends in CO2 Capture Process for Sustainable Energy and Environment

Cited by 5 publications

References 51 publications

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

Relating the Induced Free Charge Density Gradient in a Room-Temperature Ionic Liquid to Molecular-Scale Organization

Ionic Liquids Hybridization for Carbon Dioxide Capture: A Review

Novel Tetramethylammonium Cation-Based Ionic Liquid Solutions for Highly Efficient CO2 Absorption

Contact Info

Product

Resources

About

Amine-Ionic Liquid Blends in CO₂ Capture Process for Sustainable Energy and Environment

Novel Tetramethylammonium Cation-Based Ionic Liquid Solutions for Highly Efficient CO₂ Absorption