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题名: Microcalorimetric study of differential heats of CO adsorption on PtRu/C fuel cell catalysts
作者: Zhang, YJ;  Li, JY;  Zhang, JT;  Xin, Q
关键词: microcalorimetry ;  differential heat of CO adsorption ;  carbon supported bimetallic PtRu catalyst
刊名: ACTA CHIMICA SINICA
发表日期: 2004-11-14
卷: 62, 期:21, 页:2205-2208
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: 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 similar to 112 kJ . mol(-1)) beriveen 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.
语种: 英语
WOS记录号: WOS:000225048900015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139464
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Xian Shiyou Univ, Coll Chem & Chem Engn, Xian 710065, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, YJ,Li, JY,Zhang, JT,et al. Microcalorimetric study of differential heats of CO adsorption on PtRu/C fuel cell catalysts[J]. ACTA CHIMICA SINICA,2004,62(21):2205-2208.
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