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Investigation of the hydrogenation reactivity of some organic substrates using an electrocatalytic method

Paper ID Volume ID Publish Year Pages File Format Full-Text
42361 45922 2010 7 PDF Available
Title
Investigation of the hydrogenation reactivity of some organic substrates using an electrocatalytic method
Abstract

The hydrogenation reactivity of some classes of organic substrates (α,β-unsaturated ketones, benzaldehydes and acetophenones) was investigated using an electrocatalytic method (undivided cell, nickel sacrificial anode and water/methanol solvent). During the process a nickel deposit is produced on the cathode surface, at the same time that hydrogen is generated by water reduction. Nickel deposit morphologies (catalyst surface) were investigated, taking into account different cathode matrix materials (Cu, Ni, Fe, Fe/Ni (alloy 64:36)). The electrocatalytic method was evaluated by electrochemical efficiency of the hydrogenation process ((hydrogenation theoretical charge/experimental charge) × product yield). It was observed that Ni deposit/Ni cathode matrix ensemble exhibits slightly better catalytic activity, likely due the nanostructure of the nickel deposit. Moreover, the reactivity order determined through the electrochemical efficiencies (α,β-unsaturated ketones > benzaldehydes > acetophenones) is the same as that found in the literature.

Graphical abstractThe hydrogenation of some organic substrates was investigated through an electrocatalytic method. Nickel deposit morphologies (catalyst surface) were also investigated, taking into account different cathode matrix materials (Cu, Ni, Fe, Fe/Ni (alloy 64:36)). Ni deposit/Ni cathode matrix ensemble exhibited slightly better activity, likely due the nanostructure of the nickel deposit. Hydrogenation reactivity order observed: α,β-unsaturated ketones > benzaldehydes > acetophenones.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Electrocatalytic hydrogenation; Nickel sacrificial anode; Nickel catalyst; Olefins; Ketones; Aldehydes
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Investigation of the hydrogenation reactivity of some organic substrates using an electrocatalytic method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 372, Issue 1, 5 January 2010, Pages 1–7
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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