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Dongare S, Zeeshan M, Aydogdu AS, Dikki R, Kurtoğlu-Öztulum SF, Coskun OK, Muñoz M, Banerjee A, Gautam M, Ross RD, Stanley JS, Brower RS, Muchharla B, Sacci RL, Velázquez JM, Kumar B, Yang JY, Hahn C, Keskin S, Morales-Guio CG, Uzun A, Spurgeon JM, Gurkan B. Reactive capture and electrochemical conversion of CO 2 with ionic liquids and deep eutectic solvents. Chem Soc Rev 2024; 53:8563-8631. [PMID: 38912871 DOI: 10.1039/d4cs00390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Ionic liquids (ILs) and deep eutectic solvents (DESs) have tremendous potential for reactive capture and conversion (RCC) of CO2 due to their wide electrochemical stability window, low volatility, and high CO2 solubility. There is environmental and economic interest in the direct utilization of the captured CO2 using electrified and modular processes that forgo the thermal- or pressure-swing regeneration steps to concentrate CO2, eliminating the need to compress, transport, or store the gas. The conventional electrochemical conversion of CO2 with aqueous electrolytes presents limited CO2 solubility and high energy requirement to achieve industrially relevant products. Additionally, aqueous systems have competitive hydrogen evolution. In the past decade, there has been significant progress toward the design of ILs and DESs, and their composites to separate CO2 from dilute streams. In parallel, but not necessarily in synergy, there have been studies focused on a few select ILs and DESs for electrochemical reduction of CO2, often diluting them with aqueous or non-aqueous solvents. The resulting electrode-electrolyte interfaces present a complex speciation for RCC. In this review, we describe how the ILs and DESs are tuned for RCC and specifically address the CO2 chemisorption and electroreduction mechanisms. Critical bulk and interfacial properties of ILs and DESs are discussed in the context of RCC, and the potential of these electrolytes are presented through a techno-economic evaluation.
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Affiliation(s)
- Saudagar Dongare
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Muhammad Zeeshan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Ahmet Safa Aydogdu
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Ruth Dikki
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Samira F Kurtoğlu-Öztulum
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, Sahinkaya Cad., Beykoz, 34820 Istanbul, Turkey
| | - Oguz Kagan Coskun
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Miguel Muñoz
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
| | - Avishek Banerjee
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Manu Gautam
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - R Dominic Ross
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Jared S Stanley
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Rowan S Brower
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Baleeswaraiah Muchharla
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Robert L Sacci
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - Jesús M Velázquez
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA
| | - Bijandra Kumar
- Department of Mathematics, Computer Science, & Engineering Technology, Elizabeth City State University, 1704 Weeksville Road, Elizabeth City, NC 27909, USA
| | - Jenny Y Yang
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Christopher Hahn
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Seda Keskin
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Carlos G Morales-Guio
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alper Uzun
- Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University TÜPRAŞ Energy Center (KUTEM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - Joshua M Spurgeon
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA
| | - Burcu Gurkan
- Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
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Vichou E, Adjez Y, Li Y, Gómez-Mingot M, Fontecave M, Sánchez-Sánchez CM. Smart Electrode Surfaces by Electrolyte Immobilization for Electrocatalytic CO 2 Conversion. J Am Chem Soc 2024; 146:2824-2834. [PMID: 38240579 DOI: 10.1021/jacs.3c13315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The activity and selectivity of molecular catalysts for the electrochemical CO2 reduction reaction (CO2RR) are influenced by the induced electric field at the electrode/electrolyte interface. We present here a novel electrolyte immobilization method to control the electric field at this interface by positively charging the electrode surface with an imidazolium cation organic layer, which significantly favors CO2 conversion to formate, suppresses hydrogen evolution reaction, and diminishes the operating cell voltage. Those results are well supported by our previous DFT calculations studying the mechanistic role of imidazolium cations in solution for CO2 reduction to formate catalyzed by a model molecular catalyst. This smart electrode surface concept based on covalent grafting of imidazolium on a carbon electrode is successfully scaled up for operating at industrially relevant conditions (100 mA cm-2) on an imidazolium-modified carbon-based gas diffusion electrode using a flow cell configuration, where the CO2 conversion to formate process takes place in acidic aqueous solution to avoid carbonate formation and is catalyzed by a model molecular Rh complex in solution. The formate production rate reaches a maximum of 4.6 gHCOO- m-2 min-1 after accumulating a total of 9000 C of charge circulated on the same electrode. Constant formate production and no significant microscopic changes on the imidazolium-modified cathode in consecutive long-term CO2 electrolysis confirmed the high stability of the imidazolium organic layer under operating conditions for CO2RR.
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Affiliation(s)
- Elli Vichou
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
| | - Yanis Adjez
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Maria Gómez-Mingot
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, Collège de France, UMR 8229 CNRS, Sorbonne Université, PSL Research University, 11 Place Marcelin Berthelot, 75005 Paris, France
| | - Carlos M Sánchez-Sánchez
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE, 4 Place Jussieu, 75005 Paris, France
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Nayak MK, Elvers BJ, Mandal D, Das A, Ramakrishnan R, Mote KR, Schulzke C, Yildiz CB, Jana A. Reduction of 2- H-substituted pyrrolinium cations: the carbon-carbon single bond in air stable 2,2'-bipyrrolidines as a two-electron-source. Chem Commun (Camb) 2023; 59:6698-6701. [PMID: 37183853 DOI: 10.1039/d3cc00891f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Reduction of 2-H-substituted pyrrolinium cations via initially formed secondary radicals results in either dimerisation or H-abstracted products, while the outcome depends on the N-substituents. The resultant central carbon-carbon single bond in the dimerised 2,2'-bipyrrolidine derivatives can be oxidised chemically and electrochemically. The notably air and moisture-stable dimers were subsequently utilised as a source of two electrons in various chemical transformations.
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Affiliation(s)
- Mithilesh Kumar Nayak
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Benedict J Elvers
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald D-17489, Germany.
| | - Debdeep Mandal
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Ayan Das
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Raghunathan Ramakrishnan
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Kaustubh R Mote
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Carola Schulzke
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald D-17489, Germany.
| | - Cem Burak Yildiz
- Department of Aromatic and Medicinal Plants, Aksaray University, Aksaray-68100, Türkiye.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
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Martini MB, Fernández JL, Adam CG. Insights on the catalytic behaviour of sulfonic acid-functionalized ionic liquids (ILs) in transesterification reactions - voltammetric characterization of sulfonic task-specific ILs with bisulfate anions. Phys Chem Chem Phys 2021; 23:2731-2741. [PMID: 33491717 DOI: 10.1039/d0cp05674j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This work shows for the first time the link between the amount of free sulfuric acid (as detected by cyclic voltammetry) and the activity of sulfonic-acid-functionalized ionic liquids (ILs) as acid catalysts for a transesterification reaction, and demonstrates that sulfonic acid groups, while are not directly involved in the catalysis, release the free acid during the reaction. Two imidazolic ILs with bisulfate as the counterion and their corresponding task-specific ILs (TSILs) that resulted from the addition of a sulfonic acid group inside the imidazolic-base structure were studied. The outstanding catalytic activity at room temperature of the TSILs 1-(4-sulfonic acid)-butyl-3-methylimidazolium bisulfate ([bsmim]HSO4) and 1-(4-sulfonic acid)-butyl-imidazolium bisulfate ([bsHim]HSO4) for the transesterification of p-nitrophenyl acetate with methanol was associated to the significant amounts of free sulfuric acid in equilibria with the ionic pairs. It was concluded that these TSILs function as reservoirs for releasing the free acid, which is the actual acid catalyst. In contrast, the corresponding non-sulfonic ILs supply very little amounts of free acid and consequently present low catalytic activities at room temperature, which in fact can be improved by increasing the reaction temperature up to 100 °C.
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Affiliation(s)
- María B Martini
- Instituto de Química Aplicada del Litoral (IQAL, UNL-CONICET) and Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829 (3000) Santa Fe, Argentina.
| | - José L Fernández
- Instituto de Química Aplicada del Litoral (IQAL, UNL-CONICET) and Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829 (3000) Santa Fe, Argentina. and Programa de Electroquímica Aplicada e Ingeniería Electroquímica (PRELINE), Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829 (3000) Santa Fe, Argentina
| | - Claudia G Adam
- Instituto de Química Aplicada del Litoral (IQAL, UNL-CONICET) and Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829 (3000) Santa Fe, Argentina.
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Montiel MA, Solla-Gullón J, Montiel V, Sánchez-Sánchez CM. Electrocatalytic studies on imidazolium based ionic liquids: defining experimental conditions. Phys Chem Chem Phys 2018; 20:19160-19167. [PMID: 29978164 DOI: 10.1039/c8cp02662a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The number of publications devoted to studying electrochemical reactions in room temperature ionic liquids (RTILs) is constantly growing, but very few of them have been devoted to defining proper experimental conditions to obtain reproducible electrochemical results. In this work, we demonstrate that the combination of a proper RTIL purification treatment and a filtered Ar gas stream allow us to obtain featureless voltammograms in [C4mim][BF4], [C4mim][NTf2], and [C4m2im][NTf2], which otherwise present signals associated with different types of impurities such as water and some minor electroactive impurities acquired during the RTIL synthesis process. Moreover, we demonstrate that bubbling Ar, or another inert gas, through the electrolyte in order to purge O2 dissolved in RTILs is one of the major sources of water and O2 impurities incorporated in RTILs within the electrochemical cell. To overcome this source of water uptake, we have incorporated a gas stream purification filter before the gas reaches the RTIL in the electrochemical cell. To illustrate the effect of these impurities in relevant electrocatalytic studies, we study the electrocatalytic reduction of CO2 on Pt nanoparticles and the key role of an appropiate filter when the CO2 gas stream is bubbled within imidazolium based RTILs. Our cyclic voltammetric studies point out that CO2 electroreduction on Pt nanoparticles only presents activity in [C4mim][NTf2] and [C4m2im][NTf2], thus suggesting that the C-2 position on the imidazolium ring is not the key position in CO2 electrochemical reduction. In contrast, the same Pt nanoparticles are inactive towards CO2 electroreduction in [C4mim][BF4], which is a more hydrophilic RTIL.
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Affiliation(s)
- Miguel A Montiel
- Instituto Universitario de Electroquímica, Universidad de Alicante, Ap. 99, 03080 Alicante, Spain
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