Efficient and reversible CO2 capture by amine functionalized-silica gel confined task-specific ionic liquid system

Aboudi, Javad; Vafaeezadeh, Majid

doi:10.1016/j.jare.2014.02.001

Cited by 36 publications

(15 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This behavior is associated with ILs high viscosity difficulting mass transfer. When ILs are immobilized in a solid support an increase of gas-liquid contact area is reached, improving kinetic to supported materials as previously reported (Aboudi and Vafaeezadeh, 2015; Moya et al., 2016; Safiah et al., 2014; Yang and Wang, 2015). The same behavior was evidenced for 1-Butyl-methylimidazolium acetate encapsulated in a solid material.…”

Section: Resultssupporting

confidence: 67%

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

View full text Add to dashboard Cite

Physical immobilization of ionic liquids (ILs) in solid materials appears as an interesting strategy for the development of new sorbents for CO 2 separation from natural gas. In this work the effect of physical immobilization of two ionic liquids with different anions (bmim[Cl] and bmim[OAc]) on two mesoporous supports (commercial silica SBA-15 and silica extracted from rice husk) was evaluated for CO 2 separation from natural gas by experimental determination of CO 2 sorption, CO 2 /CH 4 selectivity and sorption kinetics. Results showed that the pure supports present the greatest CO 2 sorption capacity when compared to immobilized ILs. However, CO 2 removal efficiency improves considerably in the CO 2 /CH 4 mixture when ILs are immobilized in these supports. The best selectivity results were obtained for supports immobilized with the IL bmim[Cl] and values increased for SIL-Cl by 37% and SBA-Cl 51% when compared with their respective supports. The contribution of SIL-Cl (3.03 ± 0.12) to separation performance (CO 2 /CH 4 ) is similar to SBA-Cl (3.29 ± 0.39). ILs supported also presented fast sorption kinetics when compared to pure ILs thus being an interesting alternative in the search for highly efficient and low-cost separation processes.

show abstract

Section: Resultssupporting

confidence: 67%

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

View full text Add to dashboard Cite

show abstract

“…The selection criteria were based on two factors, it should be easy in preparation which must utilize cheap starting materials, secondly it must be efficient ILs for CO 2 capturing . Both amine and organic acids are reported for efficient CO 2 capturing . The purpose of using the ethanolamine‐based ILs is to improve the properties of permeability and selectivity of membrane for CO 2 in the CO 2 /CH 4 gas mixture.…”

Section: Introductionmentioning

confidence: 99%

Development of ethanolamine‐based ionic liquid membranes for efficient CO₂/CH₄ separation

Rehman

Rafiq

Muhammad

et al. 2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

This study is focused on the development of ionic liquids (ILs) based polymeric membranes for the separation of carbon dioxide (CO2) from methane (CH4). The advantage of ILs in selective CO2 absorption is that it enhances the CO2 selective separation for the ionic liquid membranes (ILMs). ILMs are developed and characterized with two different ILs using the solution‐casting method. Three different blend compositions of ILs and polysulfone (PSF) are selected for each ILMs 10, 20, and 30 wt %. Effect of the different types of ILs such as triethanolamine formate (TEAF) and triethanolamine acetate (TEAA) are investigated on PSF‐based ILMs. Field emission scanning electron microscopy analysis of the membranes showed reasonable homogeneity between the ILs and PSF. Thermogravimetric analysis showed that by increasing the ILs loading thermal stability of the membranes improved. Mechanical analysis on developed membranes showed that ILs phase reduced the amount of plastic flow of the PSF phase and therefore, fracture takes place at gradually lower strains with increasing ILs content. Gas permeation evaluation was carried out on the developed membranes for CO2/CH4 separation between 2 bar to 10 bar feed pressure. Results showed that CO2 permeance increases with the addition of ILs 10–30 wt % in ILMs. With 20–30 wt % TEAF‐ILMs and TEAA‐ILMs, the highest selectivity of a CO2/CH4 53.96 ± 0.3, 37.64 ± 0.2 and CO2 permeance 69.5 ± 0.6, 55.21 ± 0.3 is observed for treated membrane at 2–10 bar. The selectivity using mixed gas test at various CO2/CH4 compositions shows consistent results with the ideal gas selectivity. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45395.

show abstract

“…58 Only a few works have examined supported task-specific ionic liquids as composite adsorbents. [59][60][61][62][63][64] Specifically, Zhang et al…”

Section: Introductionmentioning

confidence: 99%

Porous Solids Impregnated with Task-Specific Ionic Liquids as Composite Sorbents

et al. 2015

View full text Add to dashboard Cite

This work examines six task-specific ionic liquids (TSILs), comprised of the taurinate anion paired with five tetraalkylammonium cations (where alkyl = methyl, ethyl, propyl, butyl, and hexyl) and a tetrabutylphosphonium cation, impregnated in ordered mesoporous silica, SBA-15. The composites showed significantly increased CO 2 uptakes relative to the parent SBA-15 materials. The surface area of these materials varies from approximately 5 to 1000 m 2 /g depending on the amount of IL loaded into the silica pores. The presence of n-hexyl side chains on the TSIL significantly reduces water loading, indicating that judicious IL selection may provide a means of controlling water uptake. After exposure to water vapor, three of the six cation-taurinate composites displayed an increase in CO 2 capacity. X-ray diffraction data of the composite of tetramethylammonium taurinate and SBA-15 shows that the ionic liquid is crystalline inside the pores of the silica. Isotherms are measured at several different temperatures and the results show that storage at ambient humidity significantly impacts the capacity of these materials. By comparison, the TSILs supported on an amorphous porous support, BPL activated carbon, showed no increase in CO 2 adsorption capacity. The results provide physical insight into the synthesis, structure, porosity, and sorption capacity of composites of adsorbents and ionic liquids that need to be considered prior to application.

show abstract

Efficient and reversible CO2 capture by amine functionalized-silica gel confined task-specific ionic liquid system

Abstract: Graphical abstract

Cited by 36 publications

References 17 publications

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Development of ethanolamine‐based ionic liquid membranes for efficient CO₂/CH₄ separation

Porous Solids Impregnated with Task-Specific Ionic Liquids as Composite Sorbents

Contact Info

Product

Resources

About

Efficient and reversible CO2 capture by amine functionalized-silica gel confined task-specific ionic liquid system

Abstract: Graphical abstract

Cited by 36 publications

References 17 publications

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Development of ethanolamine‐based ionic liquid membranes for efficient CO2/CH4 separation

Porous Solids Impregnated with Task-Specific Ionic Liquids as Composite Sorbents

Contact Info

Product

Resources

About

Development of ethanolamine‐based ionic liquid membranes for efficient CO₂/CH₄ separation