EFFECT OF THE SIZE OF PLATINUM PARTICLES ON THE CHEMISORPTION OF OXYGEN

被引：32
作者：
JAEGER, NI
JOURDAN, AL
SCHULZEKLOFF, G
机构：
来源：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 08期
关键词：
D O I：
10.1039/ft9918701251
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：
An unambiguous particle-size effect has been observed in the desorption of oxygen from a faujasite-embedded platinum dispersion with distinctly different and narrow particle-size distributions. A kinetic analysis of the desorption spectra revealed a relative increase in the activation energy for desorption by about 60 kJ mol-1 as the Pt particle size decreased from 5 to 1 nm. A coverage-dependent activation energy has to be assumed for a consistent interpretation of the experimental results.
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页码：1251 / 1257
页数：7
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