PdNi/C催化剂的制备及对甲酸的电催化氧化

Preperation of PdNi/C catalysts and the effect on the electro-catalytic oxidation of formic acid

采用化学还原法,在乙二醇体系中制备了碳载PdNi催化剂(PdNi/C),与相同方法制备的Pd/C催化剂比较,发现PdNi/C催化剂对甲酸氧化具有较负的峰电位和较高的峰电流,且起始氧化电位也较低。计时电流曲线测试表明,与Pd/C催化剂相比,甲酸在PdNi/C催化剂上的氧化电流密度随时间衰减得比较慢,且具有较高的稳定电流。

Carbon supported PdNi catalysts were prepared by chemical reduction in glycol solution. The results showed that the formic acid oxidation on PdNi/C catalyst has more negative peak potential,the lower onset potential and the higher peak current density compared with Pd/C catalyst which prepared with the same method.The oxidation current density of formic acid decreases slower and relatively higher value during 1 hour compared with Pd/C catalyst.