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Evaluation of carbon monoxide oxidation over CeO2/Co3O4 catalysts: Effect of ceria loading |
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| Authors: | Chih-Wei Tang Ming-Chih Kuo Chin-Jung Lin Chen-Bin Wang Shu-Hua Chien |
| Affiliation: | aDepartment of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, National Defense University, Tahsi, Taoyuan 33509, Taiwan, ROC bInstitute of Chemistry, Academia Sinica, Taipei 11529, Taiwan, ROC cDepartment of Chemistry, National Taiwan University, Taipei 10764, Taiwan, ROC |
| Abstract: | Modification of cobaltic oxide (obtained from the reduction of high-valence cobalt oxide and assigned as R230, SBET = 100 m2 g?1) with different loading of ceria was proceeded using the impregnation method (assigned as CeX/R230, X = 4, 12, 20, 35 and 50 wt%). The CeX/R230 catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption at ?196 °C, temperature-programmed reduction (TPR) and transmission electron microscopy (TEM). Their catalytic activities towards the CO oxidation were studied in a continuous flow micro-reactor. The results revealed that the optimal modification, i.e., Ce20/R230, can increase the surface area (SBET = 109 m2 g?1) of cobaltic oxide, further weaken the bond strength of Co |
| Keywords: | Ceria Cobaltic oxide CO oxidation |
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