Application of hydrogen-storage alloy electrode in electrochemical reduction of glucose

作者：Tang Y; Chen H; Jiang JZ; Tang Z; Huang BY; Roesky HW^*

来源：Journal of Power Sources, 2004, 130(1-2): 56-60.

DOI：10.1016/j.jpowsour.2003.12.033

• hydrogen-storage alloy electrode
• sorbitol
• glucose
• catalytic reduction

Electrolysis of glucose was performed at constant potential using hydrogen-storage alloy as catalytic reduction electrode. A superficial treatment and activation of the hydrogen-storage alloy powder had an obvious effect on improving the current efficiency for the generation of sorbitol. The most favorable results were obtained when a current density of 8 mA cm(-2), a voltage of 4.0-5.0 V and a pH of 8 at a temperature of 30 degreesC are used. Prior to use the electrode was treated for 2 h at 80 degreesC with a solution containing KBH(4) (0.5 mol/l), KF (0.5 mol/l) and KOH (6 mol/l). Under optimized conditions the current efficiency for sorbitol by electrolyzing glucose exceeded 90%. The yield of sorbitol was around 80%. The lifetime of the electrode was tested and analyzed, and methods of regeneration are discussed.

• 出版日期2004-5-3
• 单位中南大学