PT/SIO2 CATALYSTS - A COMPARISON OF THE IMPREGNATION AND THE SOL-GEL METHODS

被引：20

作者：

BOSCH, P ^{[1
]}

LOPEZ, T ^{[1
]}

LARA, VH ^{[1
]}

GOMEZ, R ^{[1
]}

机构：

[1] UNIV AUTONOMA METROPOLITANA IZTAPALAPA,DEPT CHEM,POB 55-534,MEXICO CITY 09340,DF,MEXICO

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 80卷 / 03期

关键词：

HYDROGENATION; IMPREGNATION; PHENYLACETYLENE; PLATINUM; SILICA; SOL GEL PREPARATION;

D O I：

10.1016/0304-5102(93)85004-D

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：

A comparative study of Pt/SiO2 catalysts prepared by impregnation or by the sol-gel method is reported. The catalysts were characterized by chemisorption, electron microscopy and X-ray diffraction studies. The results showed that metallic particles (35 angstrom) in sol-gel catalyst, are particles coming out from the support. These ''emerged particles'', in phenylacetylene hydrogenation, act like ultrahighly dispersed particles.

引用

页码：299 / 306

页数：8

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