Effect of La addition on Ru/Al2O3 catalyst for selective CO oxidation

被引：3
|
作者：
Chen Xirong [1 ]
Chen Zaoming [2 ]
Lin Weiming [3 ]
机构：
[1] Jiangxi Univ Technol, Sch Met & Chem Engn, Ganzhou 341000, Peoples R China
[2] Jiangxi Univ Technol, Inst Engn, Ganzhou 341000, Peoples R China
[3] South China Univ Technol, Sch Chem & Energy Engn, Guangzhou 510640, Peoples R China
来源：
RENEWABLE AND SUSTAINABLE ENERGY, PTS 1-7 | 2012年 / 347-353卷
基金：
中国国家自然科学基金;
关键词：
Ruthenium-based catalysts; Lanthanum; Selective CO oxidation; PREFERENTIAL OXIDATION; RUTHENIUM CATALYSTS; RU CATALYST; REMOVAL; COMPLEX; GAS; TPR;
D O I：
10.4028/www.scientific.net/AMR.347-353.3616
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Ru/Al2O3 catalysts with various La2O3 contents were synthesized by impregnation method. The catalysts were tested for selective CO oxidation and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy with energy-dispersive spectroscopy, and H-2 temperature-programmed reduction. The effects of La addition into Ru/Al2O3 catalysts on structure and performance were investigated. Results show that higher CO conversions (>99%) and CO2 selectivity are obtained at 110-170 degrees C on RuLa/Al2O3. La doping promotes the dispersion of Ru species, thereby enhancing catalytic activity. The analysis reveals that the modification of La2O3 is favorable for the formation of active Ru species with good dispersion and enhanced selective CO oxidation.
引用
收藏
页码：3616 / +
页数：2
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