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ELECTRONIC-PROPERTIES OF SUPPORTED PD AGGREGATES IN RELATION WITH THEIR REACTIVITY FOR 1,3-BUTADIENE HYDROGENATION
被引:91
|作者:
BERTOLINI, JC
DELICHERE, P
KHANRA, BC
MASSARDIER, J
NOUPA, C
TARDY, B
机构:
[1] Institut de Recherches sur la Catalyse, C.N.R.S., Villeurbanne Cedex, 69626
关键词:
aggregates 1,3 butadiene;
binding energy;
FWHM;
hydrogenation reaction;
supported Pd;
TOF;
XPS;
D O I:
10.1007/BF00774723
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:
The electronic and catalytic properties of supported Pd particles have been studied by measurements of XPS core level shifts and activity for 1,3-butadiene hydrogenation reaction respectively. For samples prepared by atom beam deposition on carbonaceous supports the TOF at steady state decreases rapidly with decreasing particle size in the range of particle diameter 2.8 nm-1.2 nm. For these small particles, the Pd 3d core level shows an upwards shift and a larger half width compared to the values for massive Pd samples. For the Pd/SiO2 particles of similar size, both the 3d core level energy and the TOF are comparable to these of the massive Pd systems. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.
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页码:215 / 223
页数:9
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