The study of bicyclic amidine-based ionic liquids as promising carbon dioxide capture agents

Fu, Hui; Wang, Xinyu; Sang, Haina; Fan, Ruo-Yao; Han, Yufen; Zhang, Jialü; Liu, Zhenzhen

doi:10.1016/j.molliq.2020.112805

Cited by 24 publications

(6 citation statements)

References 33 publications

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“…Carbon dioxide absorption in DESs has been extensively studied in the past decade. − ,− Previously, we have investigated the capacity of CO 2 absorption and associated mechanism for a series of anion-functionalized protic ILs, i.e., [DBUH][X] . We found that the basicity of comprising anion (X – ) of the IL dictates the maximum absorption capacity as well as kinetic and mechanism.…”

Section: Resultsmentioning

confidence: 99%

“…These DESs usually exhibit fairly good performance on CO 2 absorption. Similar to the CO 2 absorptions in ILs, − empirically, changing the anions of salt-based DESs heavily influences their CO 2 capture abilities. , However, because of a lack of available basicity data of comprising anions in these DESs, so far there have been few studies that investigated the effect of anion basicity of DES on CO 2 absorption ability as well as the mechanism associated. − …”

Section: Introductionmentioning

confidence: 99%

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Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

et al. 2023

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An equilibrium acidity (pK a ) scale that comprises 16 Bronsted organic acids, including phenols, carboxylic acids, azoles, and phenylmalononitriles, was established in a choline chloride/EG-based deep eutectic solvent (DES) ([Ch][Cl]:2EG) by ultraviolet−visible (UV−Vis) spectroscopic methods. The established acidity scale spans about 6 pK units in the DES, which is similar to that for these acids in water. The acidity comparisons and linear correlations between the DES and other solvents show that the solvent property of [Ch][Cl]:2EG is quite different from those of amphiphilic protic and dipolar aprotic molecular solvents. The carbon dioxide absorption capabilities as well as apparent absorption kinetics for a series of anion-functionalized DESs ([Ch][X]:2EG) were measured, and the results show that the basicity of comprising anion [X] of choline salt is essential for the maximum carbon dioxide absorption capacity, i.e., a stronger basicity leads to a greater absorption capacity. The possible absorption mechanisms for carbon dioxide absorption in these DESs were also discussed based on the spectroscopic evidence.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

et al. 2023

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Section: Resultsmentioning

confidence: 99%

“…87 The BCP and bond paths connecting two atoms show clear and unambiguous evidence for the existence of an interaction. 88,89 Therefore, the BCP is the most representative point in the interatomic interaction region to investigate the characteristics of the corresponding chemical bonds, 90 and CP (3, À1) is known as the BCP. 91,92 Based on the topological analysis, the BCP quantum mechanical parameters, such as charge density r (BCP) , Laplacian of the charge density r 2 r (BCP) , local potential energy density V (BCP) , local gradient kinetic energy density G (BCP) , and total energy density H (BCP) were subsequently calculated.…”

Section: Quantum Theory Of Atoms In Moleculesmentioning

confidence: 99%

Revealing the incorporation of an NH₂group into the edge of carbon dots for H₂O₂sensingviathe C–N⋯H hydrogen bond interaction

Putro

Maddu

Hardhienata

et al. 2023

Phys. Chem. Chem. Phys.

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“…Wu et al [ 76 ] studied the reactivity of azolate anions with CO 2 from the density functional theory (DFT) perspective. It was studied that the absorption capacity by imidazolate [ 66 , 69 ], pyrazolate ILs [ 77 , 78 ], and indazolate ILs [ 79 ] was affected by the substituents on the heterocycles. For example, Wang et al [ 60 ] showed that the molar ratio of CO 2 to [P 66614 ][4-CHO-Im] could reach 1.24 at 20 °C and 1 bar via the interactions of imidazolate-CO 2 and hydrogen bonding.…”

Section: Functionalized Ils For Co 2 Capturementioning

confidence: 99%

Tuning Functionalized Ionic Liquids for CO2 Capture

Zhang

Ke²,

Zhang³

et al. 2022

IJMS

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The increasing concentration of CO2 in the atmosphere is related to global climate change. Carbon capture, utilization, and storage (CCUS) is an important technology to reduce CO2 emissions and to deal with global climate change. The development of new materials and technologies for efficient CO2 capture has received increasing attention among global researchers. Ionic liquids (ILs), especially functionalized ILs, with such unique properties as almost no vapor pressure, thermal- and chemical-stability, non-flammability, and tunable properties, have been used in CCUS with great interest. This paper focuses on the development of functionalized ILs for CO2 capture in the past decade (2012~2022). Functionalized ILs, or task-specific ILs, are ILs with active sites on cations or/and anions. The main contents include three parts: cation-functionalized ILs, anion-functionalized ILs, and cation-anion dual-functionalized ILs for CO2 capture. In addition, classification, structures, and synthesis of functionalized ILs are also summarized. Finally, future directions, concerns, and prospects for functionalized ILs in CCUS are discussed. This review is beneficial for researchers to obtain an overall understanding of CO2-philic ILs. This work will open a door to develop novel IL-based solvents and materials for the capture and separation of other gases, such as SO2, H2S, NOx, NH3, and so on.

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The study of bicyclic amidine-based ionic liquids as promising carbon dioxide capture agents

Cited by 24 publications

References 33 publications

Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

Revealing the incorporation of an NH₂group into the edge of carbon dots for H₂O₂sensingviathe C–N⋯H hydrogen bond interaction

Tuning Functionalized Ionic Liquids for CO2 Capture

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The study of bicyclic amidine-based ionic liquids as promising carbon dioxide capture agents

Cited by 24 publications

References 33 publications

Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

Acidity Scale in a Choline Chloride- and Ethylene Glycol-Based Deep Eutectic Solvent and Its Implication on Carbon Dioxide Absorption

Revealing the incorporation of an NH2group into the edge of carbon dots for H2O2sensingviathe C–N⋯H hydrogen bond interaction

Tuning Functionalized Ionic Liquids for CO2 Capture

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About

Revealing the incorporation of an NH₂group into the edge of carbon dots for H₂O₂sensingviathe C–N⋯H hydrogen bond interaction