Influence of gaseous atmosphere on corona-induced degradation of aqueous phenol
D Hayashi; W F L M Hoeben; G Dooms; E M van Veldhuizen; W R Rutgers; G M W Kroesen; D Hayashi; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands; W F L M Hoeben; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands; G Dooms; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands; E M van Veldhuizen; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands; W R Rutgers; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands; G M W Kroesen; Faculty of Applied Physics, Eindhoven University of Technology, P O Box 513, 5600 MB Eindhoven, The Netherlands
Журнал:
Journal of Physics D: Applied Physics
Дата:
2000-11-07
Аннотация:
The phenol degradation processes by pulsed corona discharges are investigated under three kinds of discharge atmosphere (air, argon and oxygen). The temporal variations of the concentrations of phenol and the intermediate products are monitored by LIF spectroscopy. The species of the intermediate products are identified by spectral analysis. It is clarified that the oxidative gaseous reagents produced from O<sub>2</sub> and those from H<sub>2</sub>O degrade phenol to intermediate products with comparable degradation rates. The degradation via the reagents from H<sub>2</sub>O gives rise to the formation of molecules exhibiting fluorescence at 400-500 nm, in addition to dihydroxybenzene (DHB), while the degradation via the reagents from O<sub>2</sub> produces only DHB. The reagents from O<sub>2</sub> play an important role in the conversion of phenol to DHB.
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