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Electrochemical synthesis of glyoxylic acid from glyoxal—III. influence of the adatoms on the yields of the reaction on platinum and vitreous carbon electrodes

✍ Scribed by G. Pierre; M. El Kordi; G. Cauquis


Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
327 KB
Volume
30
Category
Article
ISSN
0013-4686

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✦ Synopsis


The addition in a cell of small amounts of adatoms like Ag, Sn, Bi, T1 or Au increases the yield of glyoxylic acid prepared by electrochemical oxidation of glyoxal on a platinum anode. The chemical yields reach values of 67 and 69 °. o at 20 and 50°C respectively when they were of 58 and 62 O g in the same experimental conditions on bright platinum. The glyoxal is almost completely eliminated.

Resume---L'addition de faibles quantit~s de certains adatomes tels que Ag, Sn, Bi, T1 ou Au dans le compartiment anodique d'une cellule d'61ectrolyse permet d'augmenter les rendements de la r6action de synth~se de l'acide glyoxylique par oxydation 61ectrochimique du glyoxal sur platine. Ce rendement peut atteindre 67 et 69 o~, h 20 et 50'~C respectivement alors qu'il 6tait de 58 et 62 ~' o sur platine pur. Un autre int6r~t de ces adatomes est de permettre une 61imination presque totale du glyoxal.


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