A microelectrode study of the reduction of formaldehyde in neutral concentrated aqueous solutions

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ID: 265902
1970
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Abstract
Voltammetry at Hg microelectrodes has been used to investigate the mechanism of the reduction of formaldehyde in conditions close to those employed for the electrosynthesis of ethylene glycol (that is, a very high concentration of formaldehyde in a neutral buffer at high temperature). It is shown that, even with a 40% formaldehyde solution, it is possible to record a well formed reduction wave, limiting current densities up to 30 A cm−2. The variations in half-wave potential, limiting current density and wave shape with formaldehyde concentration are reported and the influence of pH, temperature and electrolyte are considered. With increasing formaldehyde concentration, the transition from 2e− reduction to 1e− reduction is clearly observed. The results led to a re-examination of the influence of cathode material on the yield of ethylene glycol and it is confirmed that graphite is definitely the best choice.
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montenegro1970journala Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors M. I. Montenegro;D. Pletcher;E. A. Liolios;D. J. Mazur;C. Zawodzinski;M. I. Montenegro;D. Pletcher;E. A. Liolios;D. J. Mazur;C. Zawodzinski;
Journal journal of applied electrochemistry
Year 1970
DOI
doi:10.1007/BF01012471
URL
https://doi.org/10.1007/bf01012471
Keywords
electrochemistry physical chemistry industrial chemistry/chemical engineering electrochemistry physical chemistry industrial chemistry/chemical engineering electrochemistry physical chemistry industrial chemistry/chemical engineering ethylene formaldehyde physical chemistry graphite aqueous solution

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