Effect of the voltage waveforms and power on hydrogen and hydrogen peroxide formation in water-spray gliding arc reactor
2011
The present work deals with the formation of molecular hydrogen (H 2 ) and hydrogen peroxide (H 2 O 2 ) from liquid water sprayed into a non-thermal plasma formed by a gliding arc discharge. Previous work has demonstrated enhanced efficiency, as measured by specific energy yield, for the production of these species using a low power-pulsed plasma-gliding arc formed in a reactor with two divergent electrodes, water sprayed through a two way nozzle, and power generated by an ignition coil driven by a pulse generator. In the present work, H 2 in the gas phase and H 2 O 2 in the liquid water are determined for different values of the power injected into the reactor, as well for different waveforms (pulsed and alternating current AC), with Ar carrier. A comparison of the pulsed and AC waveforms of the voltage, for the same power injected into plasma (6 W), on the efficiency of the H 2 and H 2 O 2 production was made.
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