Hydrogen production from ethanol steam reforming over core–shell structured NixOy–, FexOy–, and CoxOy–Pd catalysts
| Autor: | Jiyeun Kim, Misook Kang, Byeong Sub Kwak |
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| Rok vydání: | 2010 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Ascorbic acid Catalysis Steam reforming Fuel Technology chemistry Partial oxidation Zeolite Cobalt Hydrogen production Nuclear chemistry Space velocity |
| Zdroj: | International Journal of Hydrogen Energy. 35:11829-11843 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2010.08.073 |
| Popis: | The present work focused on the investigation of the hydrogen generation through the ethanol steam reforming over the core–shell structured Ni x O y –, Fe x O y –, and Co x O y –Pd loaded Zeolite Y catalysts. The transmission electron microscopy (TEM) image of Ni x O y –Pd represented a very clear core–shell structure, but the other two catalysts, Co x O y – and Fe x O y –Pd, were irregular and non-uniform. The catalytic performances differed according to the added core metal and the support. The core–shell structured Co x O y –Pd/Zeolite Y provided a significantly higher reforming reactivity compared to the other catalysts. The H 2 production was maximized to 98% over Co x O y –Pd(50.0 wt%)/Zeolite Y at the conditions of reaction temperature 600 °C, CH 3 CH 2 OH:H 2 O = 1:3, and GHSV (gas hourly space velocity) 8400 h −1 . In the mechanism that was suggested in this work, the cobalt component played an important role in the partial oxidation and the CO activation for acetaldehyde and CO 2 respectively, and eventually, cobalt increased the hydrogen yield and suppressed the CO generation. |
| Databáze: | OpenAIRE |
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