Significant Improvements in CO<sub>2</sub> Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions

Luo, Xiaoyan; Guo, Yan; Ding, Fang; Zhao, Huimin; Cui, Guokai; Li, Haoran; Wang, Congmin

doi:10.1002/anie.201400957

Cited by 297 publications

(198 citation statements)

References 67 publications

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“…[4,7,8] This is mainly owed to the high CO 2 solubility in ILs as well as the possibility to fine-tune the sorption properties of the ionic material. [16][17][18][19][20][21] This mechanism requires much more energy for CO 2 release than the noncovalent path, but because of the formation of a CO 2 derivative, these ILs have in turn ah igherc apacity for CO 2 capture. [9,10] However,t he use of traditional and neat ILs as physicals orbents for CO 2 is not particularly good because, in most of the cases, their noticeable high solubility resultsf rom their high molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

et al. 2017

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Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO to yield bicarbonate. Three types of CO sorption in these "IL aqueous solutions" were observed: physical, CO -imidazolium adduct generation, and bicarbonate formation (up to 1.9 mol mol of IL), resulting in a 10:1 (molar ratio) total absorption of CO relative to imidazolate anions in the presence of water 1:1000 (IL/water). These sorption values are higher than the classical alkanol amines or even alkaline aqueous solutions under similar experimental conditions.

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Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

et al. 2017

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“…Lately, CO 2 capture and storage (CCS) has emerged due to its massive removal of CO 2 and the connectivity with a fossil fuel based process. [8][9][10][11][12] A promising alternative for CO 2 capture from ue gas is to utilize porous solid sorbents based on pressure, vacuum or temperature swing systems relying on its low energyconsumption and adsorption-sensitivity on temperature and pressure. 3 CO 2 capture and storage technologies primarily include precombustion (CO 2 /H 2 ), post-combustion (CO 2 /N 2 ), and oxycombustion.…”

Section: Introductionmentioning

confidence: 99%

Highly porous N-doped carbons impregnated with sodium for efficient CO₂ capture

Kim

Lee

2015

J. Mater. Chem. A

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Highly porous sodium-impregnated and N-doped carbon sorbents (SNSs) were prepared by KOH activation of polyacrylonitrile (PAN), followed by NaOH impregnation of the activated N-doped carbons. These new types of materials were investigated as sorbents for CO 2 capture. Particularly, SNS2-20 prepared with the KOH/PAN ratio of 2 at 700 C and 20 wt% NaOH based on the weight of the activated carbon exhibited the adsorption capacity of 6.84 and 4.48 mmol g À1 at 0 and 25 C under ambient pressure. Among the carbon sorbents reported to date, it showed the highest CO 2 uptake of 3.03 and 1.90 mmol g À1 at 0 and 25 C under a typical pressure condition of post-combustion flue gas (0.15 bar CO 2 ). The enhanced CO 2 uptake is due to high porosity caused by KOH activation, enriched pyridonic/pyrrolic nitrogen contents, and strong basic sites generated by NaOH impregnation. Moreover, CO 2 /N 2 selectivities of 59.5, 68.9 and 79.4 at 0, 25 and 50 C were achieved for the gas mixture (CO 2 : N 2 ¼ 15 : 85) according to the ideal adsorbed solution theory (IAST). The consecutive adsorption-desorption cycle experiments using SNS2-20 showed almost unaltered CO 2 uptake capacities. Combined with its simple preparation, the high CO 2 adsorption capacity and selectivity of the synthesized SNS2-20 could provide potential for practical applications of CO 2 capture and storage.

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“…To verify this speculation, 13 36 and after CO 2 bubbling, this peak was split into two peaks Figure S6). Thus the structural transition in the IL self-assemblies 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 shown that the pH value change also did not noticeably affect the size of the IL self-assembly (see Figure S7).…”

Section: Possible Mechanism For Co 2 -Driven Structural Transition Ofmentioning

confidence: 99%

Reversible Switching of Amphiphilic Self-Assemblies of Ionic Liquids between Micelle and Vesicle by CO₂

Shi¹,

Xiong²,

Wang³

et al. 2016

Langmuir

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The creation of CO2-responsive materials that undergo structural transition between micelle and vesicle is of great importance from both theoretical and practical points of view. In this work, we have developed a series of CO2-responsive single-tailed amphiphilic ionic liquids (ILs) composed of N-alkyl-N-methyldiethanolamine cation [CnMDEA](+) (n = 8, 10, 12, 14, 16, 18) and 2-pyrrolidinone [2-Pyr](-) anion. The aggregation behavior and self-assembly structures of the ILs in aqueous solution have been investigated by conductivity, surface tension, dynamic light scattering, cryogenic transmission electron microscopy, small-angle X-ray scattering, and nuclear magnetic resonance spectroscopy. For the first time, CO2 driven reversible switching of self-assembly between spherical micelle and unilamellar vesicle is found for [CnMDEA][2-Pyr] (n = 16, 18) in aqueous solutions at 20 °C and atmospheric pressure. It is shown that the mechanism behind the reversible micelle to vesicle transition involves the formation of carbamate anion from the reaction between [2-Pyr](-) and CO2.

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Significant Improvements in CO₂ Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions

Cited by 297 publications

References 67 publications

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

Highly porous N-doped carbons impregnated with sodium for efficient CO₂ capture

Reversible Switching of Amphiphilic Self-Assemblies of Ionic Liquids between Micelle and Vesicle by CO₂

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Significant Improvements in CO2 Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions

Cited by 297 publications

References 67 publications

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

Carbon Dioxide Capture by Aqueous Ionic Liquid Solutions

Highly porous N-doped carbons impregnated with sodium for efficient CO2 capture

Reversible Switching of Amphiphilic Self-Assemblies of Ionic Liquids between Micelle and Vesicle by CO2

Contact Info

Product

Resources

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Significant Improvements in CO₂ Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions

Highly porous N-doped carbons impregnated with sodium for efficient CO₂ capture

Reversible Switching of Amphiphilic Self-Assemblies of Ionic Liquids between Micelle and Vesicle by CO₂