Partial oxidation of ethanol using a non-equilibrium plasma
| Autor: | Xinli Zhu, Trung Hoang, Richard G. Mallinson, Lance L. Lobban |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Ethanol
Hydrogen Atmospheric pressure Renewable Energy Sustainability and the Environment Chemistry Radical Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Catalysis Volumetric flow rate chemistry.chemical_compound Fuel Technology Organic chemistry Partial oxidation Selectivity |
| Zdroj: | International Journal of Hydrogen Energy. 39:9047-9056 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2014.03.198 |
| Popis: | Partial oxidation of ethanol with air was carried out in a pulsed discharge plasma reactor at low temperature and atmospheric pressure. Effects of O 2 :ethanol ratio, ethanol flow rate, and discharge current were investigated. H 2 and CO are the major products (>86%). Increases of O 2 :ethanol ratio promote CO formation at the expense of C 2 hydrocarbons. H 2 selectivity and H 2 + CO selectivity are maximized at O 2 :ethanol ratios of 0.3 and 0.5, respectively. Increases of feed flow rate accompanied by current increases allow the reactor to operate with high throughput. The LHV energy efficiency is increased with increasing feed flow rate, reaching 85% at high ethanol flow rates, conditions that also increase throughput. In contrast to catalytic and homogenous reactions, not all O 2 is consumed at high O 2 :ethanol ratio for the low temperature plasma reaction. A radical reaction pathway of H abstraction from –OH and the α-H in ethanol to form CH 3 CHO followed by C–C scission is proposed. The produced hydrogen rich gas can be potentially used in fuel cells and engines. |
| Databáze: | OpenAIRE |
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