Effect of the microstructure of Pt/CeO2-TiO2 catalysts on their catalytic properties in CO oxidation

被引：0

作者：

A. A. Shutilov

G. A. Zenkovets

G. N. Kryukova

V. Yu. Gavrilov

E. A. Paukshtis

A. I. Boronin

S. V. Koshcheev

S. V. Tsybulya

机构：

[1] Russian Academy of Sciences,Boreskov Institute of Catalysis, Siberian Branch

来源：

Kinetics and Catalysis | 2008年 / 49卷

关键词：

Cerium; Cerium Oxide; Platinum Particle; Pore Volume Distribution; Platinum Cluster;

D O I：

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学科分类号：

摘要：

The microstructure of 2% Pt/CeO2-TiO2 catalysts has an effect on their catalytic properties in CO oxidation. The nanostructured catalysts as platinum clusters 0.3–0.5 nm in size are the most active. These clusters are stabilized at crystal boundaries formed by irregularly intergrown anatase particles. The catalyst containing platinum particles 2–5 nm in size is less active because of the decrease in the extent of dispersion of platinum and the change of its electron state.

引用

页码：271 / 278

页数：7