Development of Low-Cost Deep Eutectic Solvents for CO 2 Capture

Ma, Chunyan; Sarmad, Shokat; Mikkola, Jyri‐Pekka; Ji, Xiaoyan

doi:10.1016/j.egypro.2017.12.464

Cited by 48 publications

(20 citation statements)

References 13 publications

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“…A similar phenomenon can be found in DESs hybrid solvent. Ma et al indicated that a small amount of water in [BTMA][Cl]-GLY 1:2 not only decreases the viscosity but also improves the CO 2 solubility due to the increase of the mass transfer[61], while excess water in[BTMA][Cl]-GLY 1:2 results in a decrease of CO 2 solubility, which is in agreement with Li et al[12].…”

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confidence: 74%

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

Liu

Dai

et al. 2020

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The CO2 solubilities (including CO2 Henry’s constants) and viscosities in ionic liquids (ILs)/deep eutectic solvents (DESs)-based hybrid solvents were comprehensively collected and summarized. The literature survey results of CO2 solubility illustrated that the addition of hybrid solvents to ILs/DESs can significantly enhance the CO2 solubility, and some of the ILs-based hybrid solvents are super to DESs-based hybrid solvents. The best hybrid solvents of IL–H2O, IL–organic, IL–amine, DES–H2O, and DES–organic are [DMAPAH][Formate] (2.5:1) + H2O (20 wt %) (4.61 mol/kg, 298 K, 0.1 MPa), [P4444][Pro] + PEG400 (70 wt %) (1.61 mol/kg, 333.15 K, 1.68 MPa), [DMAPAH][Formate] (2.0:1) + MEA (30 wt %) (6.24 mol/kg, 298 K, 0.1 MPa), [TEMA][Cl]-GLY-H2O 1:2:0.11 (0.66 mol/kg, 298 K, 1.74 MPa), and [Ch][Cl]-MEA 1:2 + DBN 1:1 (5.11 mol/kg, 298 K, 0.1 MPa), respectively. All of these best candidates show higher CO2 solubility than their used pure ILs or DESs, evidencing that IL/DES-based hybrid solvents are remarkable for CO2 capture. For the summarized viscosity results, the presence of hybrid solvents in ILs and DESs can decrease their viscosities. The lowest viscosities acquired in this work for IL–H2O, IL–amine, DES–H2O, and DES–organic hybrid solvents are [DEA][Bu] + H2O (98.78 mol%) (0.59 mPa·s, 343.15 K), [BMIM][BF4] + DETA (94.9 mol%) (2.68 mPa·s, 333.15 K), [L-Arg]-GLY 1:6 + H2O (60 wt %) (2.7 mPa·s, 353.15 K), and [MTPP][Br]-LEV-Ac 1:3:0.03 (16.16 mPa·s, 333.15 K) at 0.1 MPa, respectively.

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confidence: 74%

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

Liu

Dai

et al. 2020

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“…The experimental apparatus for measuring the gas absorption loading has been described previously 33 . It contains a gas reservoir, an absorption vessel, a magnetic stirrer and two pressure transducers.…”

Section: Methodsmentioning

confidence: 99%

A smart friction control strategy enabled by CO2 absorption and desorption

Hua

Björling

Grahn

et al. 2019

Sci Rep

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Intelligent control of friction is an attractive but challenging topic and it has rarely been investigated for full size engineering applications. In this work, it is instigated if it would be possible to adjust friction by controlling viscosity in a lubricated contact. By exploiting the ability to adjust the viscosity of the switchable ionic liquids, 1,8-Diazabicyclo (5.4.0) undec-7-ene (DBU)/ glycerol mixture via the addition of CO2, the friction could be controlled in the elastohydrodynamic lubrication (EHL) regime. The friction decreased with increasing the amount of CO2 to the lubricant and increased after partial releasing CO2. As CO2 was absorbed by the liquid, the viscosity of the liquid increased which resulted in that the film thickness increased. At the same time the pressure-viscosity coefficient decreased with the addition of CO2. When CO2 was released again the friction increased and it was thus possible to control friction by adding or removing CO2.

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“…Concerning CO 2 capture, it has been observed that CO 2 absorption depends on the strength of inter-and intramolecular interactions or the free volume [141]. A wide class of DESs formulations has been tested in terms of CO 2 capacity and water content effect [141,142].…”

Section: Co 2 Capture Deep Eutectic Solventsmentioning

confidence: 99%

New Solvents for CO2 and H2S Removal from Gaseous Streams

et al. 2021

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Acid gas removal from gaseous streams such as flue gas, natural gas and biogas is mainly performed by chemical absorption with amines, but the process is highly energy intensive and can generate emissions of harmful compounds to the atmosphere. Considering the emerging interest in carbon capture, mainly associated with increasing environmental concerns, there is much current effort to develop innovative solvents able to lower the energy and environmental impact of the acid gas removal processes. To be competitive, the new blends must show a CO2 uptake capacity comparable to the one of the traditional MEA benchmark solution. In this work, a review of the state of the art of attractive solvents alternative to the traditional MEA amine blend for acid gas removal is presented. These novel solvents are classified into three main classes: biphasic blends—involving the formation of two liquid phases, water-lean solvents and green solvents. For each solvent, the peculiar features, the level of technological development and the main expected pros and cons are discussed. At the end, a summary on the most promising perspectives and on the major limitations is provided.

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Development of Low-Cost Deep Eutectic Solvents for CO 2 Capture

Cited by 48 publications

References 13 publications

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

A smart friction control strategy enabled by CO2 absorption and desorption

New Solvents for CO2 and H2S Removal from Gaseous Streams

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