Citation: WANG Jian-Qiang, SHEN Mei-Qing, WANG Jun, WANG Wu-Lin, JIA Li-Wei. Complete Oxidation of Ethanol and Thermal Stability of Ceria-BasedMaterials Modified by Doping Cu[J]. Acta Physico-Chimica Sinica, ;2010, 26(08): 2249-2254. doi: 10.3866/PKU.WHXB20100641 shu

Complete Oxidation of Ethanol and Thermal Stability of Ceria-BasedMaterials Modified by Doping Cu

1.
1. Key Laboratory for Green Chemical Technology of Education Ministry, School of Chemical Engineering &Technology, Tianjin University, Tianjin 300072, P. R. China;
2. State Key Laboratory of Engines, Tianjin University, Tianjin 300072, P. R. China;
3. China Automotive Technology & Research Center, Tianjin 300162, P. R. China;
4. Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, Jiangsu Province, P. R. China

Received Date: 30 December 2009
Available Online: 13 May 2010
Fund Project: 国家高技术研究发展计划项目(863) (2009AA064803)资助 (863) (2009AA064803)

The complete oxidation of ethanol (COE) was studied over Cu_0.1Ce_0.9O_x and Cu_0.1Ce_0.6Zr_0.3O_x catalysts prepared by the sol-gel method. Samples were characterized by X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET) adsorption, Raman spectroscopy, hydrogen temperature-programmed reduction (H₂-TPR), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR). Results show that for fresh samples, the activity of COE is found to be superior over Cu_0.1Ce_0.9O_x than over Cu_0.1Ce_0.6Zr_0.3O_x whereas this is reversed for aged samples. The thermal stability improves after the introduction of Zr. Furthermore, the relationship between the active species and the activity for COE was investigated.
- Cu_0.1Ce_0.9O_x,
- Cu_0.1Ce_0.6Zr_0.3O_x,
- Complete oxidation of ethanol,
- Thermal stability
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