Kinetics of ethanol oxidation in subcritical water
Ethanol oxidation in subcritical water was examined at 25 MPa in the temperature range of 260–350 °C with equivalence ratio of 0.6. With oxygen as the oxidiser, the overall first-order decomposition reaction parameters were determined to be 10 2.9 ± 0.4 s −1 for the pre-exponential factor and 53.8 ±...
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Veröffentlicht in: | The Journal of supercritical fluids 2010-11, Vol.55 (1), p.246-251 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Ethanol oxidation in subcritical water was examined at 25
MPa in the temperature range of 260–350
°C with equivalence ratio of 0.6. With oxygen as the oxidiser, the overall first-order decomposition reaction parameters were determined to be 10
2.9
±
0.4
s
−1 for the pre-exponential factor and 53.8
±
4.6
kJ
mol
−1 for the activation energy. The products obtained by the hydrothermal oxidation of ethanol were acetaldehyde, acetic acid, carbon monoxide and carbon dioxide. First-order kinetics was enough to capture the main characteristics of species concentration profiles. Consecutive reaction network: C
2H
5OH
→
CH
3CHO
→
CH
3COOH
→
CO
→
CO
2 well described the behaviour of components obtained from wet oxidation of ethanol. |
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ISSN: | 0896-8446 1872-8162 |
DOI: | 10.1016/j.supflu.2010.07.004 |