Chemisorption measurements on polymer-stabilized colloidal platinum and rhodium nanoclusters in liquid dispersion

被引：10

作者：

Bradley, JS ^{[1
]}

Busser, W ^{[1
]}

机构：

[1] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany

来源：

CATALYSIS LETTERS | 1999年 / 63卷 / 3-4期

关键词：

chemisorption; colloidal metal; nanoclusters; platinum; rhodium; catalysis; surface area; hydrogen-oxygen titration;

D O I：

10.1023/A:1019089626226

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 simple method is reported for the precise and accurate differential barometric measurement of gas adsorption into liquid dispersions of colloidal metal catalysts. Using both hydrogen adsorption and hydrogen/oxygen titration the fraction of the total surface of polyvinylpyrrolidone-stabilised Pt and Rh colloids available for adsorption is found to be approximately 44%. This method is also applicable to supported metal catalysts in liquid slurries.

引用

页码：127 / 130

页数：4

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