Influence of Pt/Ru anodic ratio on the valorization of ethanol by PEM electrocatalytic reforming towards value-added products

Heterostructured Ru/Ni(OH)2Nanomaterials as Multifunctional Electrocatalysts for Selective Reforming of Ethanol

“…Constructing heterostructures has proven to be a promising synthetic strategy for gaining unique multifunctional catalytic properties − as it can optimize the electron binding energy of the catalysts, regulating the absorption and desorption ability of the intermediates on the catalysts, and modifying the reaction pathway. ,,, Therefore, it is highly satisfying to synthesize a Ru-based heterostructured catalyst through a heterogeneity strategy with excellent abilities for both cathodic hydrogen evolution and anodic ethanol oxidation. Another major challenge is that ethanol oxidation involves multiple electron transfers as well as multiple functional group transformations, resulting in the diversity of products. ,,,,,− By regulating the Ru-based heterostructured catalysts, changing the electrochemical oxidation process of ethanol molecules, and harvesting a single high-value-added product through selective reformation, it will lead the development of selective electric reforming of biomass.…”

New insights into lignin electrolysis on nickel-based electrocatalysts: Electrochemical performances before and after oxygen evolution

“…The objective was to prepare a Ni/C catalyst (20 % wt. Ni) by using the well-known polyol method [27,50]…”

“…These results are in good agreement with a previous study by Tang et al [51], where a ⍺-Ni(OH)2/Vulcan XC-72 composite was prepared by a different synthetic route, but still using common precursors (such as ethylene glycol and NaOH). The polyol synthetic route usually leads to the production of reduced metals supported on carbon when noble metals are used [27,50]. However, the higher tendency of nickel to get oxidized in an alkaline environment probably explains the formation of the ⍺-Ni(OH)2 crystalline phase.…”

“…if the by-products of the alcohol oxidation have an added value (which is the case according to recent publications [27]), and iii) if the feedstock is available at a much lower prize, which can be the case if such feedstock is a waste.…”

Overview on the Vital Step toward Addressing Platinum Catalyst Poisoning Mechanisms in Acid Media of Direct Ethanol Fuel Cells (DEFCs)

“…The distribution of intermediates and products is not well understood in DEFCs or under fuel cell operating conditions as mentioned above, and only a few studies have been done to elucidate the basic ethanol electrooxidation reaction mechanisms. ,,,,− For instance, PtSn is widely regarded as a much better catalyst for DEFCs than Pt because it provides much higher power densities in acid media. ,, However, the selectivity of PtSn is poor, which gets worse at higher potentials. Although the second metal removes CO at lower potentials, it also inhibits the dissociation of the C–C bond, and thus, the net effect is less CO 2 production. , In the work conducted by Wnuk and Lewera, it was proposed that fuel cell conditions play a crucial role in CO 2 formation; their findings are in good agreement with already published reports. ,,,, Wnuk and Lewera demonstrated that the main product was acetaldehyde at Pt and PtRu, while the highest selectivity for CO 2 formation was found to be at Pt catalyst.…”