ELECTROSYNTHESIS OF P-METHOXYBENZALDEHYDE ON GRAPHITE NAFION MEMBRANECOMPOSITE ELECTRODES/

The electro-oxidation of p-methoxytoluene (p-MT) at the graphite/Nafio n composite electrodes was investigated, p-Methoxybenzaldehyde (p-MBA) and a small amount of p-methoxybenzoic acid (p-MBAc) are obtained thr ough preparative electrolysis of p-MT. There is slightly higher curren t efficiency at the composite electrode employing a Ce3+-Nafion membra ne than at that employing a H+-Nafion membrane at low current densitie s.The electrochemical oxidation of p-MT is mainly a four-electron oxid ation process controlled by the diffusion of some species. (C) 1998 El sevier Science Ltd. All rights reserved.