热活化提升Pd/C催化剂甲酸电氧化性能的研究  

Study on the improvement of Pd/C catalyst electrooxidation performance of formic acid by thermal activation

作　　者：邰雪寒 裴昱昊 李芳芳 曲微丽 TAI Xue-han;PEI Yu-hao;LI Fang-fang;QU Wei-li(School of Chemical Engineering,Harbin Normal University,Harbin 150025,China)

机构地区：[1]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025

出　　处：《化学工程师》2022年第2期1-3,21,共4页Chemical Engineer

基　　金：国家自然科学基金(21503059);哈尔滨师范大学博士启动基金(XKB201416);哈尔滨师范大学硕士研究生创新科研项目(HSDSSCX2019-37)。

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。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.

关 键 词：DFAFC 甲酸氧化 PD/C催化剂 热活化 

分 类 号：O646[理学—物理化学]