【摘要】 通过微波辅助多元醇方法以XC-72碳黑作为基体材料制备了Pd/C材料,对其进行惰性气氛下热活化处理,制备了热活化Pd/C催化剂,并对不同温度制备的Pd/C催化剂的电催化甲酸氧化反应的性能进行了探究。在电化学测试中,热活化后的Pd/C催化剂的电催化活性和长时间运行稳定性都得到了显著提升。此外,在对热活化温度优化后,发现当热活化温度达到500℃时,所制备的Pd/C-500℃催化剂的甲酸电氧化活性和稳定性达到最佳水平。分析认为,催化性能的提升来源于Pd纳米颗粒的结晶性的提高,以及更强的金属载体的相互作用。更多还原

【Abstract】 The Pd/C material was prepared by microwave-assisted polyol method using XC-72 carbon black as the matrix material, and thermally activated under an inert atmosphere to prepare the thermally activated Pd/C catalyst. The performance for the electrocatalytic formic acid oxidation reaction of the C catalyst was explored. In the electrochemical test, the electrocatalytic activity and long-term operation stability of the thermally activated Pd/C catalyst have been significantly improved, in addition. The thermal activation temperature was optimized, and it was found that when the thermal activation temperature reached 500℃, the electro-oxidation activity and stability of formic acid of the prepared Pd/C-500℃ catalyst reached the best level. The analysis believes that the improvement of catalytic performance comes from the improvement of the crystallinity of Pd nanoparticles and stronger metal carrier interaction.更多还原