Abstract: Ni electrode with (220) highly preferred orientation was obtained with potentio-static electrodeposition in the solution containing1.0mol/L NiSO₄ and 0. 5 mol/L H₃BO₃.The Ni electrode deposited at - 1.25 Vfor 60 min was examined with X-ray diffaction. It was shown that the Ni electrode has a highly preferred orientation with texture degree of 92%. The mechanism and catalytic activities of propanol oxidation on the highly preferred orientation (220) Ni electrode were studied with cyclic voltammetry. It was shown that the electrocatalytic activity of the Ni electrode for propanol oxidation is higher than that for iso-propanol. The kinetic equation of propanol electrooxidation was derived. The kinetic param-eters were measured with polarization curves- The rate constant [K₁, (E)] for the oxidation of Ni(Ⅱ) to Ni(Ⅲ) is 5. 25×10^-13exp(0. 488FE/RT), The rate constant [k_-1(E)j]for the re-duction of Ni(Ⅲ) to Ni(Ⅲ) is 2. 46×10^-4exp(-0.512FE/RT) and the rate constant (k₂)for the oxidation of propanol by Ni(Ⅲ) is 5. 64×10^-6 L. mol^-1s^-1.

Key words: Highly preferred orientation Ni electrode, Propanol, Isopropanol, Electrocatalytic oxidation