Supported copper-ceria catalysts for low temperature CO oxidation

被引：84
|
作者：
Rao, Komateedi N. [1 ]
Bharali, Pankaj [1 ]
Thrimurthulu, Gode [1 ]
Reddy, Benjaram M. [1 ]
机构：
[1] Indian Inst Chem Technol, Inorgan & Phys Chem Div, Hyderabad 500607, Andhra Pradesh, India
来源：
CATALYSIS COMMUNICATIONS | 2010年 / 11卷 / 10期
关键词：
CO oxidation; CuO/CeO2; Supported copper oxide catalysts; STRUCTURAL-CHARACTERIZATION; OXIDES;
D O I：
10.1016/j.catcom.2010.03.009
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：
In this investigation, CuO/CeO2-MxOy (MxOy = Al2O3, ZrO2 and SiO2) nanocomposite oxide catalysts were prepared by deposition-precipitation and wet impregnation methods, and evaluated for CO oxidation. Catalysts were characterized by XRD, TEM, UV-vis DRS, BET surface area and H-2-TPR techniques. The synthesized catalysts exhibited high specific surface area, and uniform particle size distribution over the supports. The nanocrystalline texture of mixed metal oxides is clearly evidenced by TEM analysis. TPR and XRD results revealed synergetic interactions between copper oxide and ceria. Among various catalysts investigated, the CuO/CeO2-Al2O3 combination exhibited excellent CO oxidation activity with T-1/2 = 374 K and 100% CO conversion at below 420 K. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：863 / 866
页数：4
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