{"title":"Recent advances in anodic hydrogen production: Electrochemical oxidative dehydrogenation of aldehydes to carboxylates","authors":"Nathanael C. Ramos , Adam Holewinski","doi":"10.1016/j.coelec.2024.101484","DOIUrl":null,"url":null,"abstract":"<div><p>Electrooxidation of aldehydes to carboxylates has been observed to yield H<sub>2</sub> at small anodic potentials on Group IB metal electrodes (mainly Cu, Ag, and Au) in alkaline media. When paired with hydrogen evolution at the cathode, only one mole of electrons is transferred to generate a mole each of hydrogen and carboxylate product. Recently, this phenomenon of electrochemical oxidative dehydrogenation (EOD) has gained renewed interest as it has been demonstrated with biomass-derived substrates at industrially relevant current densities. The high electron efficiency, low cell voltage, and valuable anode products of EOD all give cause for further investigation into its prospects for co-producing renewable hydrogen and organic chemicals. Currently, the underlying mechanism of EOD remains unclear. This contribution reviews the present understanding of the reaction mechanism and highlights notable performance benchmarks to date, emphasizing the role of catalyst material and reaction conditions.</p></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":null,"pages":null},"PeriodicalIF":7.9000,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Opinion in Electrochemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451910324000450","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Electrooxidation of aldehydes to carboxylates has been observed to yield H2 at small anodic potentials on Group IB metal electrodes (mainly Cu, Ag, and Au) in alkaline media. When paired with hydrogen evolution at the cathode, only one mole of electrons is transferred to generate a mole each of hydrogen and carboxylate product. Recently, this phenomenon of electrochemical oxidative dehydrogenation (EOD) has gained renewed interest as it has been demonstrated with biomass-derived substrates at industrially relevant current densities. The high electron efficiency, low cell voltage, and valuable anode products of EOD all give cause for further investigation into its prospects for co-producing renewable hydrogen and organic chemicals. Currently, the underlying mechanism of EOD remains unclear. This contribution reviews the present understanding of the reaction mechanism and highlights notable performance benchmarks to date, emphasizing the role of catalyst material and reaction conditions.
期刊介绍：
The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner:
1.The views of experts on current advances in electrochemistry in a clear and readable form.
2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications.
In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle:
• Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •
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