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Kollias L, Zhang D, Allec SI, Nguyen MT, Lee MS, Cantu DC, Rousseau R, Glezakou VA. Advanced Theory and Simulation to Guide the Development of CO 2 Capture Solvents. ACS OMEGA 2022; 7:12453-12466. [PMID: 35465123 PMCID: PMC9022203 DOI: 10.1021/acsomega.1c07398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Increasing atmospheric concentrations of greenhouse gases due to industrial activity have led to concerning levels of global warming. Reducing carbon dioxide (CO2) emissions, one of the main contributors to the greenhouse effect, is key to mitigating further warming and its negative effects on the planet. CO2 capture solvent systems are currently the only available technology deployable at scales commensurate with industrial processes. Nonetheless, designing these solvents for a given application is a daunting task requiring the optimization of both thermodynamic and transport properties. Here, we discuss the use of atomic scale modeling for computing reaction energetics and transport properties of these chemically complex solvents. Theoretical studies have shown that in many cases, one is dealing with a rich ensemble of chemical species in a coupled equilibrium that is often difficult to characterize and quantify by experiment alone. As a result, solvent design is a balancing act between multiple parameters which have optimal zones of effectiveness depending on the operating conditions of the application. Simulation of reaction mechanisms has shown that CO2 binding and proton transfer reactions create chemical equilibrium between multiple species and that the agglomeration of resulting ions and zwitterions can have profound effects on bulk solvent properties such as viscosity. This is balanced against the solvent systems needing to perform different functions (e.g., CO2 uptake and release) depending on the thermodynamic conditions (e.g., temperature and pressure swings). The latter constraint imposes a "Goldilocks" range of effective parameters, such as binding enthalpy and pK a, which need to be tuned at the molecular level. The resulting picture is that solvent development requires an integrated approach where theory and simulation can provide the necessary ingredients to balance competing factors.
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Affiliation(s)
- Loukas Kollias
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Difan Zhang
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Sarah I. Allec
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Manh-Thuong Nguyen
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Mal-Soon Lee
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - David C. Cantu
- Department
of Chemical and Materials Engineering, University
of Nevada, Reno, Reno, Nevada 89557, United States
| | - Roger Rousseau
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Vassiliki-Alexandra Glezakou
- Basic
& Applied Molecular Foundations, Physical and Computational Sciences
Directorate, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
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Nemoto F, Nakamura SY, Abe H. Surface structure of the mixture of 1-alkyl-3-methylimidazolium iodide and polyiodide observed by surface tension measurement and X-ray reflectivity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rezaeian M, Izadyar M, Housaindokht MR. Exploring the interaction of amino acid-based ionic liquids in water and organic solvents: Insight from MD simulations and QM calculations. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Insight into the behavior at the hygroscopicity and interface of the hydrophobic imidazolium-based ionic liquids. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.09.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abe H, Nemoto F, Kishimura H, Ozawa S. CO2 capture by quenched quaternary ammonium ionic liquid-propanol mixtures assessed by Raman spectroscopy. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113687] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Interactions of CO2 with the homologous series of СnMIMBF4 ionic liquids studied in situ ATR-FTIR spectroscopy: spectral characteristics, thermodynamic parameters and their correlation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113694] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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