Preparation of nanometeric gold particles on NaHY

被引:45
作者
Guillemot, D
PolissetThfoin, M
Fraissard, J
机构
[1] Laboratoire de Chimie des Surfaces, CNRS URA 1428, Univ. Pierre et Marie Curie, 75252 Paris Cedex 05, case 196
关键词
gold particles; zeolite; TEM;
D O I
10.1007/BF00811481
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
Two Au/NaHY systems examined by TEM were prepared using an autoreduction method of Au3+ by its ethylene diamine ligands. When about 10% of the cations are H+ the particle diameter distribution is found to be about 2 nm and homogeneous. If 75% of cations are H+ the gold particle distribution is centered around 3-4 nm. Gold particles are of good stability when exposed to H-2 at 573 K for two days and the stability under O-2 greater with the higher acidified zeolite.
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页码:143 / 148
页数:6
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