The Effect of Zinc Oxide Addition to Alumina-Supported Gold Catalyst in Low Temperature Carbon Monoxide Oxidation

被引：7
|
作者：
Kim, Ki-Joong [1 ,2 ]
Chang, Chih-Hung [1 ]
Ahn, Ho-Geun [2 ]
机构：
[1] Oregon State Univ, Sch Chem Biol Environm Engn, Corvallis, OR 97331 USA
[2] Sunchon Natl Univ, Dept Chem Engn, Sunchon 540742, Jeonnam, South Korea
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2015年 / 15卷 / 01期
关键词：
Au/Al2O3; ZnO Promoter; CO Oxidation; XRD; TPR; XPS; CO OXIDATION; AU/AL2O3;
D O I：
10.1166/jnn.2015.8336
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Gold catalysts supported on alumina (Au/Al2O3) and zinc oxide/Al2O3 (Au/ZnO/Al2O3) were prepared by deposition-precipitation with ammonium bicarbonate, and were characterized by nitrogen gas adsorption, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and temperature programmed reduction. The effect of ZnO addition to the surface of Al2O3 on the catalytic activity of Al2O3-supported gold catalysts in carbon monoxide oxidation is discussed in detail. The additions of 4 wt% ZnO loading to Au/Al2O3 showed a higher degree of gold particle dispersion which resulted in higher catalytic activity with Au/ZnO/Al2O3 catalyst than with Au/Al2O3 catalyst.
引用
收藏
页码：660 / 664
页数：5
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