Reduction of nitrophenols in an electrocatalytic system

Highly efficient electrochemical and chemical hydrogenation of 4-nitrophenol using recyclable narrow mesoporous magnetic CoPt nanowires

“…For example, in an acidic electrolyte (10% H 2 SO 4 ), nitrophenol is reduced to aminophenol in a virtually quantitative yield. 49,50 Therefore, based on the previously reported results from the literature, a potential of À0.35 V vs. Ag/AgCl/KCl (3 M)/H 2 SO 4 (0.5 M) was selected to explore the electroreduction of 4-nitrophenol in acidic media (1 M H 2 SO 4 ). 51,52 Therefore, in order to use Co-Pt NWs for an effective electrochemically catalysed hydrogenation of 4-nitrophenol, it is important to evaluate their stability, as well as their catalytic activity and chemoselectivity in this aggressive environment.…”

Electrocatalytic Hydrogenation of Biomass-Derived Organics: A Review

“…53,145,146 Cu has similar functionality to Ni but lower reactivity; Cu is capable of reducing substituting nitro groups (to amines), C C bonds, and aromatic rings that yield cyclohexanones, but hydrogenation to the corresponding alcohol seems difficult on this metal. 53,109,136,144 Co, Fe, and Zn have shown inferior performance to Cu and Ni for the same reactions under the same conditions. 94,96,109,144 Metals with very high overpotential for HER, such as Hg and Pb, have also been explored.…”

“…53,109,136,144 Co, Fe, and Zn have shown inferior performance to Cu and Ni for the same reactions under the same conditions. 94,96,109,144 Metals with very high overpotential for HER, such as Hg and Pb, have also been explored. These metals seem to have negligible reactivity for hydrogenation of phenolic (and aromatic) compounds but are about the only catalysts that have been claimed to convert highly stable compounds, such as carboxylic acids.…”

“…Literature reports with normalized rates reported in this way are discussed in Section . Activation barriers for the ECH reaction. Literature examples include refs , , and . …”

“…Cu has similar functionality to Ni but lower reactivity; Cu is capable of reducing substituting nitro groups (to amines), CC bonds, and aromatic rings that yield cyclohexanones, but hydrogenation to the corresponding alcohol seems difficult on this metal. ,,, Co, Fe, and Zn have shown inferior performance to Cu and Ni for the same reactions under the same conditions. ,,, Metals with very high overpotential for HER, such as Hg and Pb, have also been explored. These metals seem to have negligible reactivity for hydrogenation of phenolic (and aromatic) compounds but are about the only catalysts that have been claimed to convert highly stable compounds, such as carboxylic acids. ,, …”