PT-SN/AL2O3 SOL-GEL CATALYSTS - METALLIC PHASE CHARACTERIZATION

被引：19

作者：

GOMEZ, R ^{[1
]}

BERTIN, V ^{[1
]}

BOSCH, P ^{[1
]}

LOPEZ, T ^{[1
]}

DELANGEL, P ^{[1
]}

SCHIFTER, I ^{[1
]}

机构：

[1] IBP,INST MEXICANO PETR,MEXICO CITY 07300,DF,MEXICO

来源：

CATALYSIS LETTERS | 1993年 / 21卷 / 3-4期

关键词：

SOL GEL CATALYSTS; PLATINUM TIN CATALYSTS; PLATINUM DISPERSION; X-RAY DIFFRACTION; ENERGY DISPERSIVE X-RAY ANALYSIS; EDX ANALYSIS;

D O I：

10.1007/BF00769483

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：

Highly dispersed platinum was found in Pt-Sn/Al2O3 catalysts prepared by the sol-gel method, i.e., cogelation of aluminum tri-sec-butoxide and tetrabutyltin and subsequent impregnation with hexachloroplatinic acid. X-ray diffraction studies showed that the cell parameter of pure platinum is not modified in bimetallic Pt-Sn samples. Moreover, energy dispersive X-ray analysis studies (EDX) showed that platinum, but not tin, was detected in the catalysts where tin was incorporated by the sol-gel coprecipitation of tin and aluminum. Incorporation of tin into the alumina network is suggested.

引用

页码：309 / 320

页数：12

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