Low-temperature electrocatalytic conversion of CO2 to liquid fuels: effect of the Cu particle size

Lucas-Consuegra, A. de; Serrano‐Ruiz, Juan Carlos; Gutiérrez-Guerra, N.; Valverde, J.L.

doi:10.20944/preprints201807.0592.v1

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…Despite the non-microporous structure, the synthetic xerogel exhibited electrocatalytic activity during the formation of hydrocarbons, primarily CH 4 36 . Metal loading onto a carbon support generally results in a decrease in the surface area and total pore volume of the matrix, suggesting a partial pore blockage by the metal particles 48 . However, the highest electrocatalytic CO 2 reduction efficiency might be achieved using a sample with the lowest surface area 48 .…”

Section: Textural Propertiesmentioning

confidence: 99%

“…Metal loading onto a carbon support generally results in a decrease in the surface area and total pore volume of the matrix, suggesting a partial pore blockage by the metal particles 48 . However, the highest electrocatalytic CO 2 reduction efficiency might be achieved using a sample with the lowest surface area 48 . This behavior has been reported for nanostructured carbon nanotube that is used as an electrocatalyst support.…”

Section: Textural Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Bio-based Carbon Electrochemically Decorated with Cu Nanoparticles: Green Synthesis and Electrochemical Performance

Fonseca¹,

Araujo²,

Pinheiro³

et al. 2022

Mat. Res.

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This study aimed to synthesize a composite material composed of bio-based, porous carbon matrix and Cu nanoparticles through a simple, low-cost, and environmentally friendly method. Concentrated Kraft black liquor was used as a carbon precursor, and Cu nanoparticles were homogeneously deposited on the carbon matrix using electrochemical deposition. The textural properties determined using N 2 isotherms indicated increased surface area of a carbon matrix with a micro-mesoporous structure. Voltammetric tests demonstrated that the composite exhibited catalytic properties for electrochemical CO 2 reduction. Compared to the bio-based, porous carbon sample (C matrix), the bio-based carbon electrode electrochemically decorated with Cu nanoparticles (C-Cu composite) exhibited increased current values of approximately 2.4 times, a potential shift of approximately 90 mV, and an onset potential of −1.02 V, under CO 2 saturation.

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Section: Textural Propertiesmentioning

confidence: 99%

Section: Textural Propertiesmentioning

confidence: 99%

Bio-based Carbon Electrochemically Decorated with Cu Nanoparticles: Green Synthesis and Electrochemical Performance

Fonseca¹,

Araujo²,

Pinheiro³

et al. 2022

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…Carbon fiber paper (CP) was employed as the substrate for particle chalcogens. CP was chosen because of its composite of carbon and carbon fibers, which apart from being conductive, also allow cheaper price than glassy carbon substrates while offering enhanced structural rigidity than carbon cloth [18].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical reduction of CO2 using Germanium-Sulfide-Indium amorphous glass structures

Khan

Sugiyama

Fujii

et al. 2020

Heliyon

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The research in electrochemical reduction of CO 2 is shifting towards the discovery of new and novel materials. This study shows a new class of material, that of Ge-SIn chalcogenide glass, to be active for reduction of CO 2 in aqueous solutions. Experiments were conducted with bulk and particle form of the material, yielding different product for each structural form. Faradaic efficiency of upto 15% was observed in bulk form for CO production while formic acid with up to 26.1 % faradaic efficiency was measured in powder form. Chalcogenide studies have focused primarily on the photoelectrochemical reduction however these results provide a strong merit for introducing metal in chalcogenide glass structures for electrochemical reduction of CO 2. The activity for CO 2 reduction and the change in product selectivity reflects that further efforts to improve the glass structures can be undertaken in order to increase the faradaic efficiency and selectivity of the products.

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Reductive Catalytic Fractionation of Spruce Wood over Ru/C Bifunctional Catalyst in the Medium of Ethanol and Molecular Hydrogen

et al. 2022

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Reductive catalytic fractionation (RCF) has emerged as an effective lignin-first biorefinery strategy to depolymerize lignin into tractable fragments in high yields. Herein, we propose the RCF of spruce wood over a Ru/C bifunctional catalyst in the medium of ethanol and molecular hydrogen to produce monomeric phenolic compounds from lignin, polyols from hemicelluloses, and microcrystalline cellulose. This contribution attempts to elucidate the role of the Ru/C bifunctional catalysts characteristics. The results clarify the particular effect of the carbon support acidity, catalyst grain size, content and dispersion of Ru on the effectiveness of lignin and hemicelluloses extraction and the yields of liquid and gaseous products. The most efficient catalysts for RCF of spruce wood, providing high yields of the monomeric phenols, glycols, and solid product with content of cellulose up to 90 wt%, bear 3 wt% of Ru with a dispersion of 0.94 based on an acidic oxidized graphite-like carbon support Sibunit®, and having a grain size of 56–94 μm. The Ru/C catalysts intensify the reactions of hydrodeoxygenation of liquid products from lignin. The main phenolic monomers are 4-propyl guaiacol, 4-propenyl guaiacol, and 4-propanol guaiacol. We explored the effect of the process temperature and time on the yield and composition of the liquid, solid, and gaseous products of spruce wood RCF. The optimal trade-off between the yields of phenolic monomers (30.0 wt%). polyols (18.6 wt%) and the solid product containing 84.4 wt% of cellulose is reached at 225 °C and 3 h over the most acidic Ru/C catalyst.

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Low-temperature electrocatalytic conversion of CO2 to liquid fuels: effect of the Cu particle size

Cited by 5 publications

References 31 publications

Bio-based Carbon Electrochemically Decorated with Cu Nanoparticles: Green Synthesis and Electrochemical Performance

Bio-based Carbon Electrochemically Decorated with Cu Nanoparticles: Green Synthesis and Electrochemical Performance

Electrochemical reduction of CO2 using Germanium-Sulfide-Indium amorphous glass structures

Reductive Catalytic Fractionation of Spruce Wood over Ru/C Bifunctional Catalyst in the Medium of Ethanol and Molecular Hydrogen

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