SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF PT AND PD SILICA SUPPORTED CATALYSTS

被引:22
|
作者
LOPEZ, T [1 ]
MORAN, M [1 ]
NAVARRETE, J [1 ]
HERRERA, L [1 ]
GOMEZ, R [1 ]
机构
[1] INST MEXICANO PETR,MEXICO CITY 07730,DF,MEXICO
关键词
D O I
10.1016/S0022-3093(05)80711-2
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Platinum and palladium silica supported catalysts were prepared by the sol-gel method using as metallic precursors the square planar complexes t[MCl2(NH3)2] with M = Pt or Pd. The catalysts were synthesized at pH = 3 and 9. If the preparation occurs in acid medium, the resulting solids show uniform microporous structure with BET areas > 500 m2/g. However, if the experiment is made in a basic medium, the resulting solids show non-homogeneous pore size distribution and BET areas < 100 m2/g.
引用
收藏
页码:753 / 757
页数:5
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