碳化钨和Vulcan XC-72炭混合载Ir催化剂对氨氧化的电催化性能  

Electrocatalytic Performance of Ir Catalyst Supported on Mixture of WC and Vulcan XC-72 Carbon for Ammonia Oxidation

作　　者：郁明珠[1] 李林儒[1] 陆天虹[1] 陈赵扬[2] 马淳安[2] 杜江燕[1] 

机构地区：[1]南京师范大学化学与材料科学学院,南京210097 [2]浙江工业大学化学工程和材料科学学院,杭州310032

出　　处：《应用化学》2013年第4期448-452,共5页Chinese Journal of Applied Chemistry

基　　金：江苏高校优势学科建设工程和浙江工业大学绿色化学合成技术国家重点实验室培育基地资助项目

摘　　要：以碳化钨(WC)和Vulcan XC-72炭黑(XC)为载体制备了XC载Ir(Ir/XC)和WC/XC载Ir(Ir-WC/XC)催化剂,在用X射线能量色散谱、X射线衍射谱对催化剂表征的基础上,用电化学方法研究了2种载体Ir催化剂对氨氧化的电催化性能,发现氨在Ir-WC/XC催化剂电极上的氧化峰峰电流密度比在Ir/XC催化剂电极上大31.26%,而且电催化稳定性明显好于Ir/XC催化剂。In this paper,the Ir catalysts supported on Vulcan XC-72 carbon（XC）（Ir/XC） and on the mixture of WC and Vulcan XC-72C（Ir-WC/XC） were prepared.Based on the characterizations with energy dispersive spectroscopy and X-ray diffraction patterns,the electrocatalytic performances of the two Ir catalysts on different supports for ammonia oxidation were investigated using the electrochemical techniques.It showed that the current density of the ammonia oxidation peak at the Ir-WC/XC catalyst electrode is 31.26% larger than that at the Ir/XC catalyst electrode.Furthermore,the electrocatalytic stability of the Ir-WC/XC catalyst is obviously better than that at the Ir/XC catalyst.

关 键 词：氨氧化 碳化钨和炭黑载铱催化剂 电催化性能 电流型电化学传感器 

分 类 号：O646[理学—物理化学]