Citation: YANG Zhi-Qiang, MAO Dong-Sen, GUO Qiang-Sheng, GU Lei. Effect of Preparation Method on the Activity of CuO/CeO₂-ZrO₂ Catalysts for Low Temperature CO Oxidation[J]. Acta Physico-Chimica Sinica, ;2010, 26(12): 3278-3284. doi: 10.3866/PKU.WHXB20101210 shu

Effect of Preparation Method on the Activity of CuO/CeO₂-ZrO₂ Catalysts for Low Temperature CO Oxidation

1.
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 200235, P. R. China

Received Date: 1 August 2010
Available Online: 29 October 2010
Fund Project: 上海市教委重点学科建设项目(J51503) (J51503)上海应用技术学院科学技术发展基金项目(KJ2008-01)资助 (KJ2008-01)

CuO/CeO₂-ZrO₂ catalysts were prepared by microwave heating decomposition (one-step approach) and by microwave heating treatment of co-precipitation followed by impregnation (two-step approach). The catalysts were characterized by X-ray diffraction (XRD), low temperature N2 adsorption/ desorption, and H₂-temperature-programmed reduction (H₂-TPR). The catalytic activities of the catalysts for low temperature CO oxidation were investigated using a microreactor-gas chromatograph. The results showed that the one-step approach was more beneficial to CuO dispersion on the catalyst surface because of a strong interaction between CuO and CeO₂-ZrO₂ and to the improved reducibility of CuO, which resulted in higher catalytic activity. We conclude that finely dispersed and small CuO particles strongly interact with CeO₂-ZrO₂ are responsible for the high catalytic activity toward CO oxidation and that large CuO particles that do not interact with CeO₂-ZrO₂ inhibit the catalytic activity.
- Catalytic activity,
- CuO/CeO₂-ZrO₂,
- CO oxidation,
- Microwave heating
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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Effect of Preparation Method on the Activity of CuO/CeO2-ZrO2 Catalysts for Low Temperature CO Oxidation

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通讯作者: 陈斌, bchen63@163.com

Effect of Preparation Method on the Activity of CuO/CeO₂-ZrO₂ Catalysts for Low Temperature CO Oxidation