| Autor: |
Xuxi Zheng, Guizhi Zhang, Shengmin Chen, Hongmei Xie, Tingting Wan, Guilin Zhou |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
International Journal of Chemical Reactor Engineering. 9 |
| ISSN: |
1542-6580 |
| DOI: |
10.2202/1542-6580.2767 |
| Popis: |
The present work investigates the catalytic properties of the Co-Ni-supported activated carbon (AC) catalyst for the oxidation removal of CO in excess hydrogen gas to obtain High purity hydrogen. X-ray diffraction (XRD), temperature-programmed desorption of O2 (O2-TPD), and temperature-programmed reduction (TPR) were used to study the properties of the prepared catalyst. XRD, and TPR results indicate that the highly dispersed NiO and Co3O4 are the main phase in the prepared catalyst. The O2-TPD results show that the Co3O4-NiO/AC catalyst has strong adsorption and activation capacity to O2 molecules. Active oxygen species can be formed on the surface of Co3O4-NiO/AC catalyst, which is the active species to oxidize CO molecules. CO conversion can exceed 99.5% in the temperature range of 443~463 K, and CO oxidation selectivity exceeds 62.2% in less than 463 K. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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