期刊
JOURNAL OF CENTRAL SOUTH UNIVERSITY
卷 21, 期 2, 页码 482-486出版社
JOURNAL OF CENTRAL SOUTH UNIV
DOI: 10.1007/s11771-014-1964-x
关键词
mesoporous CeO2; catalytic activity; CuO/CeO2; CO oxidation
资金
- Natural Science Foundation of Yunnan Province, China [2011FZ030]
- Analysis and Test Foundation of Kunming University of Science and Technology, China [2011144, 2011221]
Mesoporous CeO2 was first synthesized by hydrothermal method, and then used to synthesize different contents of CuO) (x) /CeO2 (x: molar ratio of Cu to Ce) by deposition-precipitation method. These materials were characterized by X-ray diffraction (XRD), N-2 adsorption and desorption, H-2 temperature programmed reduction (H-2-TPR) and O-2 temperature programmed desorption (O-2-TPD) to study the crystal structure, surface area, and the mechanism of CO oxidation. The results show that, on XRD patterns, no evidence of CuO diffraction peaks is present until Cu loading is increased to 20%. The BET surface area decreases noticeably with the increase of Cu content. Compared with other samples, the better reducibility and activity oxygen species of (CuO)(10%)/CeO2 coincide with its better catalytic activity.
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