Preparation and Characterization of Nanosized Gold Catalysts Supported on Co3O4 and Their Activities for CO Oxidation

被引：4

作者：

Kim, Ki-Joong ^{[1
]}

Song, Jae-Koon ^{[1
]}

Shin, Seong-Soo ^{[1
]}

Kang, Sang-Jun ^{[1
]}

Chung, Min-Chul ^{[1
]}

Jung, Sang-Chul ^{[2
]}

Jeong, Woon-Jo ^{[3
]}

Ahn, Ho-Geun ^{[1
]}

机构：

[1] Sunchon Natl Univ, Dept Chem Engn, Sunchon 540742, Jeonnam, South Korea

[2] Sunchon Natl Univ, Dept Environm Engn, Sunchon 540742, Jeonnam, South Korea

[3] OT&T Inc, Kwangju 500706, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 02期

关键词：

Nanosized Gold Catalyst; Deposition-Precipitation; Co3O4; CO Oxidation; OXIDE;

D O I：

10.1166/jnn.2011.3319

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Gold catalysts supported on Co3O4 were prepared by co-precipitation (CP), deposition-precipitation (DP), and impregnation (IMP) methods. The Au/Co3O4 catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and temperature programmed reduction (TPR) to understand the different activities for CO oxidation with different preparation methods. Gold particles below 5 nm supported on Co3O4 by DP method were found to be more exposed to the surface than those by CP and IMP methods, and this catalyst was highly active and stable in CO oxidation. Finally, catalytic activity of Au/Co3O4 catalyst for CO oxidation was strongly dependent on the gold particle size.

引用

页码：1605 / 1608

页数：4

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