Active electrodes exhibit on their surface electrocatalytically active species, which represent immobilized mediators. Ideally, a compact and electrically conductive reagent is formed which is regenerated in-situ. This does facilitate the electro-conversion and represents a redox-filter because only the electrochemical potential of this redox-active layer is relevant. Within the multitude of electrochemical transformations, only a few metals are known to perform as active anodes in protic media. Most commonly, nickel and lead systems perform well with their active and conductive surfaces, but represent harmful or environmentally less benign metals. This talk will provide a survey on such active anodes which usually operate in aqueous media. Due to the limited solubility of organic molecules in aqueous media, alcohols are more versatile solvents for anodic conversions. In particular, fluorinated alcohols, such as 1,1,1,3,3,3-hexafluoroisopropanol (HFIP), offer a broad applicability and are known to stabilize radicals. Such intermediates are of significant importance in the dehydrogenative coupling reaction employing Mo(V) reagents. The second part of the talk will present new anode system that can replace stoichiometric Mo reagents and show higher performance than the classical chemical reagents.<br/>

New active electrode systems for electrosynthesis

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.