Using a phase-transfer catalyst, we studied the kinetics of oxidation of benzaldehyde in a batch reactor and the effect of concentration of benzyl alcohol on the indirect anodic oxidation of benzyl alcohol in a CSTER. The reaction orders of both tetrabutylammonium hypochlorite ion pairs and benzaldehyde for the oxidation of benzaldehyde in the organic phase were both unity. The activation energy of the oxidation of benzaldehyde was 10.97 kJ mol(-1). The experimental results of the indirect anodic oxidation of benzyl alcohol in a CSTER revealed that the conversion of benzyl alcohol, the yield of benzaldehyde and the power consumption decreased as the concentration of benzyl alcohol increased. The selectivity of benzaldehyde increased from 25.5 to 118.6 when the concentration of benzyl alcohol was increased from 0.100 to 0.500 M. The theoretical model calculations agreed well with experimental data.