甘油在氧化物/钯复合催化剂上的电氧化研究  

Study of the Electrooxidation of Glycerol on Oxide and Pd/C Composite Catalysts

作　　者：严志远[1] 徐常威[1] 沈培康[1] 

机构地区：[1]中山大学光电材料与技术国家重点实验室物理科学与工程技术学院,广东广州510275

出　　处：《电化学》2006年第4期408-411,共4页Journal of Electrochemistry

基　　金：国家自然科学基金(20476108);广东省自然科学重点基金(04105500);广东省科技基金(2005A11001002)资助

摘　　要：应用交替微波加热法制备碳载氧化物和Pd的复合催化剂,并以电化学方法研究这一新型催化剂在碱性条件下对甘油的氧化性能.实验表明,Pd/C催化剂对甘油的电化学氧化有较好活性,但氧化物复合的非铂催化剂对甘油的电化学氧化显示出更高的活性,相对于Pd/C催化剂,其氧化起始电位发生负移及峰电流大幅度提高.本工作还优化了氧化物与Pd的比例.结果证明,氧化物的加入使复合催化剂对甘油氧化产生了协同效应.oxide and Pd on carbon composite catalysts have been prepared by intermittent microwave heating （IMH） method. The performance of the catalysts for glycerol oxidation in alkaline solution is studied by electrochemical techniques. It is shown that the Pd/C catalyst is active for glycerol electrooxidation. However, the oxide-Pd/C catalysts are even better in terms of the onset potential that is more negative and peak current density.The ratio of oxide to Pd is optimized according to the electrochemical measurement. The results reveal that the addition of oxide into the Pd/C induces the synergistic effect for glycerol electrooxidation.

关 键 词：甘油 氧化物/Pd复合催化剂 燃料电池 电氧化 

分 类 号：TM911.4[电气工程—电力电子与电力传动]