![2-Methyl-2-propanyl (2E)-5-chloro-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]pentanoate structure](https://static.chemtradehub.com/structs/122/1225232-42-7-ee03.webp "2-Methyl-2-propanyl (2E)-5-chloro-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]pentanoate structure")
2-Methyl-2-propanyl (2E)-5-chloro-2-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]pentanoate
CAS Number:
1225232-42-7
Molecular Formula:
C21H27ClN2O3
Mechanisms of low temperature capture and regeneration of CO2 using diamino protic ionic liquids
Literature Information
Publication Date
2015-12-11
DOI
10.1039/C5CP05200A
Impact Factor
3.676
Authors
Thomas Verheyen, Ekaterina I. Izgorodina, R. Vijayaraghavan, Scott Young, Douglas R. MacFarlane
View Original
Abstract
Carbon dioxide (CO2) chemical absorption and regeneration was investigated in two diamino carboxylate protic ionic liquids (PILs), dimethylethylenediamine formate (DMEDAH formate) and dimethylpropylenediamine acetate (DMPDAH acetate), using novel calorimetric techniques. The PILs under study have previously been shown to possess a CO2 absorption capacity similar to the industrial standard, 30% aqueous MEA, while requiring much lower temperatures to release the captured CO2. We show that this is in part due to the fact that the PILs exhibit enthalpies of CO2 desorption as low as 40 kJ mol−1, significantly lower than the 85 kJ mol−1 required for 30% aqueous MEA. Computational and spectroscopic analyses were used to probe the mechanism of CO2 capture, which was found to proceed via the formation of carbamate moieties on the primary amine of both DMEDAH and DMPDAH. Evidence was also found that weakly acidic counter-ions such as formate and acetate provide, unexpectedly, an additional proton acceptor site in the traditional carbamate mechanism, revealing opportunities to increase CO2 uptake capacity in the future through careful design of the anion and cation used in the PIL capture agent.
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Source Journal
Physical Chemistry Chemical Physics
CiteScore:
5.5
Self-citation Rate:
10.3%
Articles per Year:
3036
Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
Recommended Compounds
2-Methyl-2-propanyl 4-(5-iodo-2-pyrimidinyl)-1-piperazinecarboxylate
CAS Number:
1027616-32-5
Molecular Formula:
C13H19IN4O2
-1,2-cyclohexanediamine structure](https://static.chemtradehub.com/structs/928/928769-12-4-a4f0.webp "N,N'-Bis[3-(2-methoxyphenyl)-2-hydroxybenzyl](1R,2R)-1,2-cyclohexanediamine structure")
N,N'-Bis[3-(2-methoxyphenyl)-2-hydroxybenzyl](1R,2R)-1,2-cyclohexanediamine
CAS Number:
928769-12-4
Molecular Formula:
C34H38N2O4
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