Abstract:

As the background of the preparation of glyoxylic acid by the electroreduction of oxalic acid on Pb electrodes, the effects of additives structure on electrode reaction have been studied.The results show that the cation of the additives has the most influence on current efficiency and the reaction selectivity.Furthermore, cation radicle is more symmetrical or the longest alkyl chain is shorter, the current efficiency and the reaction selectivity are higher.The tetraethyl quarternary ammonium salt has the best active effect.