Electrocatalytic reduction of low concentration CO<sub>2</sub>

Kumagai, Hiromu; Nishikawa, Tetsuya; Koizumi, Hiroki; Yatsu, Taiki; Sahara, Go; Yamazaki, Yasuomi; Tamaki, Yusuke; Ishitani, Osamu

doi:10.1039/c8sc04124e

Cited by 74 publications

(65 citation statements)

References 34 publications

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“…By considering the importance of the factors described above, the membrane process for DAC was investigated as follows. [25]. These results make it apparent that it is not necessary to produce a highpurity CO 2 stream by membrane separation.…”

Section: The Design Strategy Of M-dac and Sensitivity Analysismentioning

confidence: 93%

A new strategy for membrane-based direct air capture

Fujikawa

Selyanchyn²,

Kunitake³

2020

Polym J

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Direct CO2 capture from the air, so-called direct air capture (DAC), has become inevitable to reduce the concentration of CO2 in the atmosphere. Current DAC technologies consider only sorbent-based systems. Recently, there have been reports that show ultrahigh CO2 permeances in gas separation membranes and thus membrane separation could be a potential new technology for DAC in addition to sorbent-based CO2 capture. The simulation of chemical processes has been well established and is commonly used for the development and performance assessment of industrial chemical processes. These simulations offer a credible assessment of the feasibility of membrane-based DAC (m-DAC). In this paper, we discuss the potential of m-DAC considering the state-of-the-art performance of organic polymer membranes. The multistage membrane separation process was employed in process simulation to estimate the energy requirements for m-DAC. Based on the analysis, we propose the target membrane separation performance required for m-DAC with competitive energy expenses. Finally, we discuss the direction of future membrane development for DAC.

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Section: The Design Strategy Of M-dac and Sensitivity Analysismentioning

confidence: 93%

A new strategy for membrane-based direct air capture

Fujikawa

Selyanchyn²,

Kunitake³

2020

Polym J

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“…1 Because CO 2 is a thermodynamically stable molecule, it is difficult to utilize CO 2 as the C resource. 2 Currently, ve ways to reduce CO 2 have been reported: (i) electrocatalytic reduction, [3][4][5][6][7][8] (ii) photocatalytic reduction, 2,9-11 (iii) thermal catalytic reduction, [12][13][14][15] (iv) enzymatic reduction 16,17 and (v) photoelectrocatalytic reduction. 18 In these cases, the catalyst plays a major role in CO 2 activity and reduction.…”

Section: Introductionmentioning

confidence: 99%

The mechanism for CO₂reduction over Fe-modified Cu(100) surfaces with thermodynamics and kinetics: a DFT study

Zhang

2020

RSC Adv.

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“…Consequently, sustainable syngas can result in a greener chemical industry and the production of transported liquid fuels by FT technology. A large number of polypyridyl complexes of transition metals including rhenium, osmium, manganese and ruthenium have been widely used as homogeneous and heterogeneous electrocatalysts for CO 2 reduction to CO. In recent years, synthesis and the electrocatalytic and photocatalytic activity of Dy (III), Gd (III), Re(I), and Ru (II) complexes containing different ligands have been reported for the reduction of CO 2 to CO.…”

Section: Introductionmentioning

confidence: 99%

A new polypyridyl‐based Ru (II) complex as a highly efficient electrocatalyst for CO₂ reduction

Daryanavard

Masoumpour

2020

Applied Organom Chemis

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A new polypyridyl Ru (II) complex, cis‐[Ru (Me4phen)2(CH3CN)2](NO3)2 (Me4phen = 3,4,7,8‐tetramethyl‐1,10‐phenanthroline) has been prepared and fully characterized by elemental analysis, X‐ray crystallography, cyclic voltammetry and spectroscopic techniques. The solid‐state structure of the complex indicated that the Ru (II) center is sitting in an N4N′2 coordination environment with a distorted octahedral geometry. Cyclic voltammetry technique was used to investigate the catalytic activity of the Ru (II) complex on the electrocatalytic reduction of CO2 to CO in acetonitrile. The effect of the different reaction parameters, including the scan rate, concentration of the electrocatalyst [complex Ru (II)] and reaction temperature, on the catalytic activity was also investigated. The results showed that the electrocatalytic activity of the complex increases with increasing electrocatalyst concentration and scan rate. Further, the CO2 reduction peak current decreases at lower temperatures owing to the inverse relationship between the temperature and activation energy. The theoretical calculations confirmed the proposed electrocatalytic mechanism comprising seven steps.

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Electrocatalytic reduction of low concentration CO₂

Abstract: Electrocatalytic reduction of low concentration CO2 was selectively and efficiently carried out by using a Re(I) complex with high CO2-capturing ability.

Cited by 74 publications

References 34 publications

A new strategy for membrane-based direct air capture

A new strategy for membrane-based direct air capture

The mechanism for CO₂reduction over Fe-modified Cu(100) surfaces with thermodynamics and kinetics: a DFT study

A new polypyridyl‐based Ru (II) complex as a highly efficient electrocatalyst for CO₂ reduction

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Electrocatalytic reduction of low concentration CO2

Abstract: Electrocatalytic reduction of low concentration CO2 was selectively and efficiently carried out by using a Re(I) complex with high CO2-capturing ability.

Cited by 74 publications

References 34 publications

A new strategy for membrane-based direct air capture

A new strategy for membrane-based direct air capture

The mechanism for CO2reduction over Fe-modified Cu(100) surfaces with thermodynamics and kinetics: a DFT study

A new polypyridyl‐based Ru (II) complex as a highly efficient electrocatalyst for CO2 reduction

Contact Info

Product

Resources

About

Electrocatalytic reduction of low concentration CO₂

The mechanism for CO₂reduction over Fe-modified Cu(100) surfaces with thermodynamics and kinetics: a DFT study

A new polypyridyl‐based Ru (II) complex as a highly efficient electrocatalyst for CO₂ reduction