Low temperature CO oxidation on Cu-Cu2O/TiO2 catalyst prepared by photodeposition

被引：116

作者：

Wu, Guangjun ^{[1
]}

Guan, Naijia ^{[1
]}

Li, Landong ^{[1
]}

机构：

[1] Nankai Univ, Key Lab Adv Energy Mat Chem, Minist Educ, Coll Chem, Tianjin 300071, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2011年 / 1卷 / 04期

关键词：

CARBON-MONOXIDE OXIDATION; COBALT OXIDE; CU CATALYSTS; COPPER; SURFACE; CO3O4; TIO2; NANOPARTICLES; PRETREATMENT; ADSORPTION;

D O I：

10.1039/c1cy00036e

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 series of Me/TiO2 samples (Me = V, Cr, Mn, Fe, Co, Ni, Cu and Zn) with designed Me: TiO2 ratio of 1 : 10 were prepared by a photodeposition method and studied for the oxidation of CO. The Cu/TiO2 catalyst exhibited remarkably high activity and an overall CO oxidation could be achieved at <100 degrees C. The effects of activation temperatures, GHSV and initial CO concentration on CO oxidation over Cu/TiO2 were further investigated. XRD, TEM, XPS-AES, H-2-TPR and FTIR of CO adsorption were employed to characterize Cu/TiO2 samples and the exact composition of Cu/TiO2 prepared by photo-deposition was determined to be Cu-Cu2O/TiO2. Based on the catalytic and characterization results, the possible mechanism for CO oxidation over Cu-Cu2O/TiO2 was discussed. Finally, the durability and deactivation of Cu-Cu2O/TiO2 during CO oxidation was investigated in time-on-stream reaction.

引用

页码：601 / 608

页数：8

共 34 条

[1] Preparation, characterization, and activity of Cu/TiO2 catalysts .1. Influence of the preparation method on the dispersion of copper in Cu/TiO2 [J].