Chemical Valorisation of Carbon Dioxide
Chapter 21: CO2 Splitting With Nanosecond Pulsed Discharge
Published:19 Dec 2022
M. Scapinello, G. D. Stefanidis, and E. Delikonstantis, in Chemical Valorisation of Carbon Dioxide, ed. G. Stefanidis and A. Stankiewicz, The Royal Society of Chemistry, 2022, ch. 21, pp. 466-485.
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In view of GHG emissions mitigation, efficient methods for CO2 splitting are necessitated. Whilst conventional thermocatalytic processes are limited by thermodynamic equilibrium, and high temperatures are needed to efficiently dissociate the very stable CO2 molecule, non-thermal plasma can efficiently promote CO2 splitting via electron-impact reactions at mild operating conditions. Nanosecond pulsed discharge (NPD), a relatively new plasma technology, holds promises for CO2 splitting applications since it operates beyond the thermodynamic equilibrium, maximizing the conversion of electrical energy into chemical and limiting the energy dissipation to heating. Recent advances in NPD-driven CO2 splitting are discussed herein, related to cracking mechanisms, experiments, diagnostics and modelling.