Electrochemical carbon dioxide capture to close the carbon cycle

Sharifian, Rezvan; Wagterveld, R.M.; Digdaya, Ibadillah A.; Xiang, Changsheng; Vermaas, David A.

doi:10.1039/d0ee03382k

Cited by 248 publications

(198 citation statements)

References 334 publications

(542 reference statements)

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“…[2][3][4] A common approach to eCCC is the use of redox carriers. [4][5][6] Redox carriers have two stable oxidation states, shown as R and R nin Scheme 1. In the reduced state (R n-), the carrier has a high binding constant (K1,CO2) to facilitate CO2 capture from dilute streams.…”

mentioning

confidence: 99%

Oxygen Stable Electrochemical CO2 Capture and Concentration through Alcohol Additives

Yang

Barlow

2021

Preprint

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Current methods for CO2 capture and concentration (CCC) are energy intensive due to their reliance on thermal cycles, which are intrinsically Carnot limited in efficiency. In contrast, electrochemically driven CCC (eCCC) can operate at much higher theoretical efficiencies. However, most reported systems are sensitive to O2, precluding their practical use. In order to achieve O2 stable eCCC, we pursued the development of molecular redox carriers with reduction potentials positive of the O2/O2- redox couple. Prior efforts to chemically modify redox carriers to operate at milder potentials resulted in a loss in CO2 binding. To overcome these limitations, we used common alcohols additives to anodically shift the reduction potential of a quinone redox carrier, 2,3,5,6-tetrachloro-p-benzoquinone (TCQ), by up to 350 mV, conferring O2 stability. Intermolecular hydrogen-bonding interactions to the dianion and CO2-bound forms of TCQ were correlated to alcohol pKa to identify ethanol as the optimal additive, as it imparts beneficial changes to both the reduction potential and CO2 binding constant, the two key properties for eCCC redox carriers. We demonstrate a full cycle of eCCC in aerobic simulated flue gas using TCQ and ethanol, two commercially available compounds. Based on the system properties, an estimated minimum of 21 kJ/mol is required to concentrate CO2 from 10% to 100%, or twice as efficient as state-of-the-art thermal amine capture systems and other reported redox carrier-based systems. Furthermore, this approach of using hydrogen-bond donor additives is general and can be used to tailor the redox properties of other quinones/alcohol combinations for specific CO2 capture applications.

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confidence: 99%

Oxygen Stable Electrochemical CO2 Capture and Concentration through Alcohol Additives

Yang

Barlow

2021

Preprint

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“…A variety of electrochemical pH-swing methodologies was devised to enable CO 2 separation under ambient temperature and pressure, such as direct electrolysis ( Mehmood et al., 2016 ; Datta et al., 2013 ), bipolar membrane electrodialysis ( Eisaman et al., 2011a ), and membrane capacitive deionization ( Legrand et al., 2020 ; Sharifian et al., 2021 ). In 1996 ( Xiao and Li, 1997 ), an electrodialysis system was reported for pH-swing CO 2 separation by an electrochemical membrane module with polyamide soaked with aqueous potassium carbonate for air revitalization in confined spaces.…”

Section: Electrochemical Gas Separationmentioning

confidence: 99%

Perspective and challenges in electrochemical approaches for reactive CO2 separations

Gurkan

Klemm

et al. 2021

iScience

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Summary The desire toward decarbonization and renewable energy has sparked research interests in reactive CO 2 separations, such as direct air capture that utilize electricity as opposed to conventional thermal and pressure swing processes, which are energy-intensive, cost-prohibitive, and fossil-fuel dependent. Although the electrochemical approaches in CO 2 capture that support negative emissions technologies are promising in terms of modularity, smaller footprint, mild reaction conditions, and possibility to integrate into conversion processes, their practice depends on the wider availability of renewable electricity. This perspective discusses key advances made in electrolytes and electrodes with redox-active moieties that reversibly capture CO 2 or facilitate its transport from a CO 2 -rich side to a CO 2 -lean side within the last decade. In support of the discovery of new heterogeneous electrode materials and electrolytes with redox carriers, the role of computational chemistry is also discussed.

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“…If we are talking only about capturing carbon dioxide, then to ensure competitiveness, such an approach should be sufficiently technological and should not use chemical reagents. In this regard, the most attractive methods seem to be ones based on the use of changes in pH of aqueous solutions to capture CO 2 [146,147]. For example, it is proposed to use electrolysis on seawater with simultaneous production of hydrogen and chlorine during which the resulting alkali absorbs CO 2 [148].…”

Section: Electrochemical Technologies For Co 2 Capture and Processingmentioning

confidence: 99%

Membrane Technologies for Decarbonization

Alent’ev

Волков

Воротынцев

et al. 2021

Membr. Membr. Technol.

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The deteriorating environmental situation has stimulated the world community to develop research related to the decarbonization of the economy and hydrogen energy. These two areas are essentially focused on membrane technologies, which play a crucial role in solving key tasks for these areas. This review is devoted to this research. The first part describes various membrane technologies aimed at capturing CO 2 from the most common gas mixtures, primarily containing nitrogen, methane, and hydrogen. In recent years, studies related to the amine purification of CO 2 , including membrane technologies, and the use of porous membranes filled with ionic liquids has also been intensively developed. Electromembrane technologies are also being developed that allow not only capture of CO 2 but also to process it into fuel or valuable chemicals. The course taken by several developed countries, including Russia, for the development of hydrogen energy includes the production, purification of hydrogen, and its conversion into energy. It should be noted that membrane technologies are fundamentally important for the development of each of these areas. Thus, the evolution of hydrogen is possible with the use of polymer membranes, and for deep purification and production of high-purity hydrogen by membrane catalysis; membranes based on palladium alloys are used. Finally, fuel cells are developed to produce energy from hydrogen, the most important part of which are proton or oxygen-conducting membranes.

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Electrochemical carbon dioxide capture to close the carbon cycle

Abstract: An overview of the state-of-the-art for capturing CO2via electrochemical routes.

Cited by 248 publications

References 334 publications

Oxygen Stable Electrochemical CO2 Capture and Concentration through Alcohol Additives

Oxygen Stable Electrochemical CO2 Capture and Concentration through Alcohol Additives

Perspective and challenges in electrochemical approaches for reactive CO2 separations

Membrane Technologies for Decarbonization

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