PREPARATION OF BIMETALLIC PT-AU CATALYSTS BY REDOX REACTION - CHARACTERIZATION BY XRD AND SAXS

被引:9
作者
BERTIN, V [1 ]
BOSCH, P [1 ]
DELANGEL, G [1 ]
GOMEZ, R [1 ]
BARBIER, J [1 ]
MARECOT, P [1 ]
机构
[1] UNIV POITIERS,LACCO,CNRS,URA,DO 350,F-86022 POITIERS,FRANCE
关键词
PT-AU CATALYSTS; REDON REACTION; CHARACTERIZATION BY XRD; CHARACTERIZATION BY SASX;
D O I
10.1051/jcp/1995920120
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Bimetallic Pt-Au/SiO2 catalysts were prepared by surface Redox reactions. Au was introduced as Au Cl-4- reduced on platinum surface either by hydrogen preadsorbed or by direct oxidation of Pt degrees by Au Cl-4-. Characterization of catalysts by X.R.D. and by S.A.X.S. pointed out that bimetallic aggregates are formed of gold particules deposited on platinum particles with a reciprocal diffusion of the two metals.
引用
收藏
页码:120 / 133
页数:14
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