Selective electro-oxidation of glycerol to dihydroxyacetone by a non-precious electrocatalyst – CuO

Liu, Chin; Hirohara, Makoto; Maekawa, Tatsuhiro; Chang, Ryongsok; Hayashi, Tomohiro; Chiang, Chia‐Ying

doi:10.1016/j.apcatb.2019.118543

Cited by 150 publications

(114 citation statements)

References 62 publications

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“…Although this value is inconsiderable, it indicates the need to carry out research with regard to the application of waste engine oils for direct electricity production. It seems, however, that further research should also include an analysis of the selection of a suitable reaction catalyst-preferably one that does not contain noble metals [58][59][60][61][62][63][64][65].…”

Section: Discussionmentioning

confidence: 99%

Applicability of Waste Engine Oil for the Direct Production of Electricity

Włodarczyk

2021

Energies

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New methods for the use of waste products as input for other technologies are a constant subject of research efforts. One such product is waste engine oil. Due to the constantly increasing number of motor vehicles in the world, the recycling or application of engine oils for energy production purposes is currently of considerable importance. This paper contains research regarding the analysis of the electro-oxidation potential of waste engine oil, and thus the possibility of using such oil as a material in fuel cells. The research demonstrates the basic possibility of the electro-oxidation of this oil emulsion on a platinum electrode in an acid electrolyte (aqueous solution of H2SO4). It was shown that in the temperature range of 20–80 °C, the electro-oxidation of the waste engine oil emulsion occurred for all emulsion concentrations (0.005%, 0.010%, 0.030%, and 0.060% of the reactor volume). The maximum current density obtained in the measurements was 21 mA·cm−2 at the temperature of 60 °C (0.030% waste oil and 0.5 M electrolyte). Although this value is small, it encourages further research on the use of used engine oil for the direct generation of electricity.

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Section: Discussionmentioning

confidence: 99%

Applicability of Waste Engine Oil for the Direct Production of Electricity

Włodarczyk

2021

Energies

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“…As displayed in Figure S4d, the signals located at 931.8 eV and 953.0 eV were assignable to the emissions from Cu 2p 3/2 and Cu2p 1/2 levels, which corresponded to the typical binding energy of Cu 0 [19]. Other binding energies present at 934.4 eV for Cu 2p 3/2 and 954.0 eV for Cu 2p 1/2 were ascribed to Cu 2+ [6,20]. Besides these peaks, the presence of shake-up satellite peaks within the region of 940-945 eV (Cu 2p 3/2 ) and 959-965 eV (Cu 2p 1/2 ) also indicated the presence of Cu 2+ species on the cathode surface.…”

Section: Characterizationsmentioning

confidence: 91%

A Bifunctional Electroactive Ti4O7-Based Membrane System for Highly Efficient Ammonia Decontamination

et al. 2020

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Herein, an electroactive filtration system, consisting of a Ti4O7 anode and a Pd-Cu co-modified nickel foam cathode, was developed and applied for the decontamination of ammonia from water. When assisted with an external electrical field, ClO• was generated on the surface of the Ti4O7 anode, which then reacted selectively with ammonia to generate N2. The anodic byproduct, NO3−, could also be reduced efficiently at the functional cathode to produce N2 as well. Electron paramagnetic resonance technique and radical scavenging tests synergistically verified the essential role of ClO• during the highly efficient ammonia conversion process. Relative to conventional batch systems, the developed flow-through design demonstrated enhanced ammonia conversion kinetics, thanks to the convection-enhanced mass transport. The proposed technology also showed desirable stability across a wide environmental matrix. This work provides new insights for the development of advanced and affordable continuous-flow systems towards effective decontamination of ammonia.

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“…[ 22 ] Wang, Angelucci, and co‐workers studied the GOR activity of the catalyst at different pH values and found that the catalytic activity increased with the increase in the pH value in alkaline environment, and the selectivity of the catalyst changed with the variation of pH. [ 18,19,23 ] Chiang and co‐workers studied the pH effects on the selectivity of a CuO electrocatalyst for GOR and found that glycerol favored to convert to formate and DHA in electrolyte with lower pH (pH = 9), while tended to form formate and glycolate at higher pH (pH = 13) [23a] . In another research, Koper et al used Pt electrodes to measure their catalytic selectivity under alkaline, neutral, and acidic conditions, respectively.…”

Section: Electrochemical Conversion Of Glycerolmentioning

confidence: 99%

“…Furthermore, Cu‐based catalysts also presented good glycerol electro‐oxidation performance. CuO showed a high ability to oxidize the secondary hydroxyl group of glycerol, leading to a high DHA selectivity (≈60%) [23a] . It makes it possible to convert waste glycerol from biodiesel plant to valuable DHA and split water for hydrogen generation at the same time.…”

Section: Electrocatalystsmentioning

confidence: 99%

Recent Progress in Electrocatalytic Glycerol Oxidation

et al. 2020

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Glycerol, as the major by‐product of biodiesel, can be oxidized into diverse value‐added chemical products via either traditional chemical methods or electrochemical routes. Electrocatalytic glycerol oxidation reaction (GOR) driven by renewable‐derived electricity (e.g., wind and solar) is a promising pathway for fine chemicals production. In an electrochemical cell, GOR can be coupled with various cathodic reactions, including hydrogen evolution reaction (HER), CO2 reduction reaction (CO2RR), and oxygen reduction reaction (ORR); in this manner, different benefits of either energy effectiveness or additional value‐added products can be obtained depending on the cathode reduction reaction selected. Comprehensively understanding of electrocatalytic GOR and the associated processes is of great significance to promote its industrial application. Herein, recent progress of GOR is focused on. The background of biomass‐derived glycerol valorization to energy and value‐added chemicals as well as the electrochemical conversion techniques via GOR is introduced. Then, the electrocatalytic reaction pathways, the potential application of GOR, and the measurement method for products are also discussed and summarized. Special emphasis is put on the design and the development of high‐selectivity and high‐activity electrocatalysts for GOR. Finally, the challenges and the future prospects in the fields of GOR are highlighted.

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Selective electro-oxidation of glycerol to dihydroxyacetone by a non-precious electrocatalyst – CuO

Cited by 150 publications

References 62 publications

Applicability of Waste Engine Oil for the Direct Production of Electricity

Applicability of Waste Engine Oil for the Direct Production of Electricity

A Bifunctional Electroactive Ti4O7-Based Membrane System for Highly Efficient Ammonia Decontamination

Recent Progress in Electrocatalytic Glycerol Oxidation

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