Investigation of protic NH4SCN-based deep eutectic solvents as highly efficient and reversible NH3 absorbents

Deng, Dongshun; Gao, Bao Hong; Zhang, Chao; Duan, Xiuzhi; Cui, Yanhong; Ning, Jingheng

doi:10.1016/j.cej.2018.10.077

Cited by 108 publications

(88 citation statements)

References 41 publications

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“…Akhmetshina et al reported a study on the gas sorbent properties of the DES 1-butyl-3-methyl imidazolium methanesulfonate/urea toward ammonia, hydrogen sulfide and carbon anhydride, with good results relative to the sorption capacity of the ammonia [ 98 ]. This study follows the results presented by Zhong [ 99 , 100 ] about phenol-based ternary DESs, by Yang using the hybrid DES choline chloride/resorcinol/glycerol (1:3:5) [ 101 ], Deng with protic NH 4 SCN-based DESs [ 102 ] and Vorotyntsev who employed methanesulfonate-based DESs.…”

Section: Deep Eutectic Solvents For Gas Solubilizationsupporting

confidence: 52%

Promising Technological and Industrial Applications of Deep Eutectic Systems

et al. 2021

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Deep Eutectic Systems (DESs) are obtained by combining Hydrogen Bond Acceptors (HBAs) and Hydrogen Bond Donors (HBDs) in specific molar ratios. Since their first appearance in the literature in 2003, they have shown a wide range of applications, ranging from the selective extraction of biomass or metals to medicine, as well as from pollution control systems to catalytic active solvents and co-solvents. The very peculiar physical properties of DESs, such as the elevated density and viscosity, reduced conductivity, improved solvent ability and a peculiar optical behavior, can be exploited for engineering modular systems which cannot be obtained with other non-eutectic mixtures. In the present review, selected DESs research fields, as their use in materials synthesis, as solvents for volatile organic compounds, as ingredients in pharmaceutical formulations and as active solvents and cosolvents in organic synthesis, are reported and discussed in terms of application and future perspectives.

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Section: Deep Eutectic Solvents For Gas Solubilizationsupporting

confidence: 52%

Promising Technological and Industrial Applications of Deep Eutectic Systems

et al. 2021

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“…Therefore, the effect of water on NH 3 solubilities in metal‐based DESs prepared in this work is very minor. Table 2 presents the comparison of NH 3 solubilities in different DESs and ILs 25,36–50,65–76 . It is found that the solubilities of NH 3 in metal‐based DESs prepared in this work are remarkably high, especially at low pressures.…”

Section: Resultsmentioning

confidence: 83%

“…Therefore, DESs have the potential to replace ILs for highly efficient and reversible gas absorption. [31][32][33][34][35] As for the application of DESs in reversible NH 3 absorption, there have been some impressive examples such as ChCl + PhOH + EG DESs, 36 NH 4 SCN + Gly DESs, 37 EaCl + Gly DESs, 38 ChCl + TetrZ + EG DESs, 39 MAA + TetrZ DESs, 40 [Im][NO 3 ] + EG DESs, 41 [emim]Cl + BenTriz DESs, 42 [ImH] Cl + Gly DESs, 43 LiCl/EG DESs, 44 and [MeC OH 3 N]Cl/U. 45 After careful examination on these DESs, it can be found that they are typically constituted by one weak acidic compound (e.g., PhOH, NH 4 46 EaCl + Res DESs, 47 and [TMPDA]Cl 2 + PhOH DESs 48 ).…”

mentioning

confidence: 99%

Remarkable NH₃ absorption in metal‐based deep eutectic solvents by multiple coordination and hydrogen‐bond interaction

Cheng

Lan

et al. 2022

AIChE Journal

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The elimination and recycling of NH3 from the vented circulating stream of NH3 synthesis process is of great significance to the protection of air environment and saving of NH3 product. Deep eutectic solvents (DESs) with as many weak acidic sites as possible are anticipated to exhibit high efficiency for NH3 absorption at low pressures. Herein, we designed and prepared a series of metal‐based DESs by mixing EaCl, metal chloride (SnCl2, ZnCl2, FeCl3, or CoCl2), and Gly. The physiochemical properties, NH3 absorption performance, and mechanism of prepared metal‐based DESs were investigated systematically. It is found that considerably high solubilities of NH3 in DESs can be achieved by utilizing the multiple coordination and hydrogen‐bond interaction with NH3 provided by metal ions and Gly respectively. The values of NH3 solubilities (17.55 mol/kg at 298.2 K and 103.0 kPa, and 10.24 mol/kg at 298.2 K and 6.8 kPa) are the highest reported to date.

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“…The performance of 1,2,4-triazole/gly (1:3) and imidazole/gly (1:3) DESs was compared with some other DESs in term of selectivity. 1,24-triazole/gly (1:3) exhibited higher selectivity (216.3) than imidazole/gly (1:3), equivalent to that of ChCl/phenol/EG (1:5:4) DES (218), but lower than that of NH 4 SCN/gly (2:3) and ChCl/RES/gly (1:3:5) at 0.1 MPa and 313.2 K [ 113 , 115 , 121 ]. Azole-based ternary DES (ChCl/tetrazole/EG, 3:7:14) exhibited excellent selectivities ranging from 284–611 at 298.2–353.2 K and 0.043–0.1 MPa [ 123 ].…”

Section: Selectivity Of Dess In Capturing Gasesmentioning

confidence: 99%

“…NH 4 SCN/gly and NH 4 SCN/urea were obtained by mixing in 2:3 molar ratio. All other DESs were prepared in 1:2 molar ratio [ 109 , 111 , 115 , 116 , 121 ].…”

Section: Figurementioning

confidence: 99%

Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

2020

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The release of certain gases to the atmosphere is controlled in many countries owing to their negative impact on the environment and human health. These gases include carbon dioxide (CO2), sulfur oxides (SOx), nitrogen oxides (NOx), hydrogen sulfide (H2S) and ammonia (NH3). Considering the major contribution of greenhouse gases to global warming and climate change, mitigation of these gases is one of the world’s primary challenges. Nevertheless, the commercial processes used to capture these gases suffer from several drawbacks, including the use of volatile solvents, generation of hazardous byproducts, and high-energy demand. Research in green chemistry has resulted in the synthesis of potentially green solvents that are non-toxic, efficient, and environmentally friendly. Deep eutectic solvents (DESs) are novel solvents that upon wise choice of their constituents can be green and tunable with high biocompatibility, high degradability, and low cost. Consequently, the capture of toxic gases by DESs is promising and environmentally friendly and has attracted much attention during the last decade. Here, we review recent results on capture of these gases using different types of DESs. The effect of different parameters, such as chemical structure, molar ratio, temperature, and pressure, on capture efficiency is discussed.

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Investigation of protic NH4SCN-based deep eutectic solvents as highly efficient and reversible NH3 absorbents

Cited by 108 publications

References 41 publications

Promising Technological and Industrial Applications of Deep Eutectic Systems

Promising Technological and Industrial Applications of Deep Eutectic Systems

Remarkable NH₃ absorption in metal‐based deep eutectic solvents by multiple coordination and hydrogen‐bond interaction

Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

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Investigation of protic NH4SCN-based deep eutectic solvents as highly efficient and reversible NH3 absorbents

Cited by 108 publications

References 41 publications

Promising Technological and Industrial Applications of Deep Eutectic Systems

Promising Technological and Industrial Applications of Deep Eutectic Systems

Remarkable NH3 absorption in metal‐based deep eutectic solvents by multiple coordination and hydrogen‐bond interaction

Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

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Remarkable NH₃ absorption in metal‐based deep eutectic solvents by multiple coordination and hydrogen‐bond interaction