The plasma dry reforming reaction of methane with carbon dioxide is investigated in a nanosecond repetitively pulsed discharge, a type of plasma that offers some of the highest performance and non-equilibrium characteristics. The experiment’s purpose was to examine the effect of varying the sequence of high-voltage pulses. We find that when successive pulses are closer than 500 μs, a memory-dominated regime gradually develops, which influences subsequent breakdown events. While reactant conversions increase with the plasma energy, both energy efficiency and conversions increase by shortening the inter-pulse time at the same plasma energy. This finding suggests that plasma power is not the only thing that matters to achieve better performance. How it is delivered can make a significant difference, in particular for CO2, whose conversion doubles at the maximum energy for molecule investigated, 1.6 eV molecule-1.

CH4 reforming with CO2 in a nanosecond pulsed discharge. The importance of the pulse sequence / Montesano, Cesare; Faedda, Marzia; Martini, Luca Matteo; Dilecce, Giorgio; Tosi, Paolo. - In: JOURNAL OF CO2 UTILIZATION. - ISSN 2212-9820. - STAMPA. - 49:(2021), pp. 1015561-1015568. [10.1016/j.jcou.2021.101556]

CH4 reforming with CO2 in a nanosecond pulsed discharge. The importance of the pulse sequence

Montesano, Cesare;Faedda, Marzia;Martini, Luca Matteo;Tosi, Paolo
2021-01-01

Abstract

The plasma dry reforming reaction of methane with carbon dioxide is investigated in a nanosecond repetitively pulsed discharge, a type of plasma that offers some of the highest performance and non-equilibrium characteristics. The experiment’s purpose was to examine the effect of varying the sequence of high-voltage pulses. We find that when successive pulses are closer than 500 μs, a memory-dominated regime gradually develops, which influences subsequent breakdown events. While reactant conversions increase with the plasma energy, both energy efficiency and conversions increase by shortening the inter-pulse time at the same plasma energy. This finding suggests that plasma power is not the only thing that matters to achieve better performance. How it is delivered can make a significant difference, in particular for CO2, whose conversion doubles at the maximum energy for molecule investigated, 1.6 eV molecule-1.
2021
Montesano, Cesare; Faedda, Marzia; Martini, Luca Matteo; Dilecce, Giorgio; Tosi, Paolo
CH4 reforming with CO2 in a nanosecond pulsed discharge. The importance of the pulse sequence / Montesano, Cesare; Faedda, Marzia; Martini, Luca Matteo; Dilecce, Giorgio; Tosi, Paolo. - In: JOURNAL OF CO2 UTILIZATION. - ISSN 2212-9820. - STAMPA. - 49:(2021), pp. 1015561-1015568. [10.1016/j.jcou.2021.101556]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/304571
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