The electro-oxidation of 2-methylpyridine(2-picoline) was investigated at a PbO2 electrode in the presence of sodium dodecylbenzenesulfonate(SDBS) in water/acetone solvents by cyclic voltammetry and controlled-potential coulometry.It was found that the selectivity and the current efficiency of the electro-oxidation from 2-picoline to 2-pyridinecarboxylic acid were obviously higher than that in aqueous and water/acetone mixed solvents when SDBS was added in acetone /water mixed solvents.The results indicate that under the optimal conditions

the reaction can obtain a selectivity of 81.98% and a current efficiency of 59.32%.The present method provides a simple method for electro-oxidation of 2-methylpyridine.