Low-Temperature CO Oxidation over CuO-CeO2/Fe2O3 Catalyst: Effect of KMnO4 Modification

被引：2

作者：

Feng, Lu ^{[1
]}

Xing, Xiangdong ^{[2
]}

Du, Yueli ^{[2
]}

Shen, Zhenghua ^{[2
]}

Zhang, Hui ^{[1
]}

Yang, Liu ^{[1
]}

Lv, Ming ^{[2
]}

机构：

[1] Xian Univ Architecture & Technol, Huaqing Coll, Xian 710043, Peoples R China

[2] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China

来源：

METALS | 2023年 / 13卷 / 02期

关键词：

CuO-CeO2; Fe2O3; low temperature; CO oxidation; KMnO4; modification; PREFERENTIAL OXIDATION; ACTIVATED CARBON; NO REDUCTION; IRON; SURFACE; RATIO; CEO2;

D O I：

10.3390/met13020186

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the effect of KMnO4 modification on the performance of CO oxidation over a CuCeOx/Fe2O3 catalyst in industrial flue gas was studied. X-ray diffraction (XRD), scanning electron microscopy (SEM), temperature-programmed reduction by H-2 (H-2-TPR), Fourier transform infrared spectroscope (FTIR), and Raman spectra were employed to reveal the relationship between the structural properties and the performance of the catalyst. The results show that the catalytic activity could be increased by KMnO4 modification. CuCeOx/Fe2O3 modified with 0.07 mol/L KMnO4 exhibited high activity, with a CO conversion of 78.2% at 160 degrees C. The modification of KMnO4 reduced the grain size and promoted the uniform dispersion of active particles. In addition, the number of oxygen-containing functional groups increased, which could anchor metal particles and provide active oxygen species for CO oxidation.

引用

页数：11

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