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Platinum deactivation:: in situ EXAFS during aqueous alcohol oxidation reaction

被引：58
作者：
Markusse, AP
Kuster, BFM
Koningsberger, DC
Marin, GB
机构：
[1] Eindhoven Univ Technol, Lab Chem Reactortechnol, NL-5600 MB Eindhoven, Netherlands
[2] Univ Utrecht, Debye Inst, Inorgan Chem Lab, NL-3508 TB Utrecht, Netherlands
来源：
CATALYSIS LETTERS | 1998年 / 55卷 / 3-4期
关键词：
platinum; EXAFS; catalysis; catalyst deactivation; oxidation;
D O I：
10.1023/A:1019007601442
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
With a new set-up for in situ EXAFS spectroscopy the state of a carbon-supported platinum catalyst during aqueous alcohol oxidation has been observed. The catalyst deactivation during platinum-catalysed cyclohexanol oxidation is caused by platinum surface oxide formation. The detected Pt-O co-ordination at 2.10 Angstrom during exposure to nitrogen-saturated cyctohexanol solution is different from what is observed for the pure oxidised platinum surface (2.06 Angstrom).
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页码：141 / 145
页数：5
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