Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (21): 2205-2208. Previous Articles    

微量热法研究燃料电池PtRu/C催化剂的CO微分吸附热

张耀君1, 李聚源1, 张君涛1, 辛勤2   

  1. 1. 西安石油大学化学化工学院, 西安, 710065;
    2. 中国科学院大连化学物理研究所催化基础国家重点实验室, 大连, 116023
  • 投稿日期:2004-03-04 修回日期:2004-08-09 发布日期:2014-02-17
  • 通讯作者: yjzhang@xsyu.edu.cn
  • 作者简介:张耀君,E-mail:yjzhang@xsyu.edu.cn
  • 基金资助:
    陕西省留学回国启动基金(No.200177)资助项目.

Microcalorimetric Study of Differential Heats of CO Adsorption on PtRu/C Fuel Cell Catalysts

ZHANG Yao-Jun1, LI Ju-Yuan1, ZHANG Jun-Tao1, XIN Qin2   

  1. 1. College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065;
    2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023
  • Received:2004-03-04 Revised:2004-08-09 Published:2014-02-17

The differential heats of CO adsorption measured by microcalorimetry have been used to probe surface adsorption sites presented on carbon black(XC72R)supported Pt,Ru and bimetallic PtRu catalysts.These results indicate that the monometallic Pt catalyst shows the highest initial differential heat of CO adsorption(125 kJ·mol-1) and the monometallic Ru catalyst displays the lowest one(109 kJ·mol-1).Three kinds of bimetallic catalysts with atomic ratios of Pt to Ru,2:1,1:1 and 1:2,have initial differential heats of CO adsorption(124~112 kJ·mol-1) between those of monometallic Pt and monometallic Ru catalyst.The strong Pt surface sites of CO adsorption were completely covered by Ru atoms in the case of the bimetallic catalyst with atomic ratio of Pt to Ru of 1:2.

Key words: microcalorimetry, differential heat of CO adsorption, carbon supported bimetallic PtRu catalyst