Insight into contraction dynamics of microwave plasmas for CO2 conversion from plasma chemistry modelling

摘要: This work addresses plasma chemistry in the core of a vortex-stabilized microwave discharge for CO2 conversion numerically, focusing on pressure-dependent contraction dynamics this plasma. A zero-dimensional model is presented experimental conditions pressure range between 60 and 300 mbar temperature 3000 6500 K. Monte Carlo flux (MCF) simulations, which describe electron kinetics, are self-consistently coupled to model. The simulation results show that an increase accompanied by transition neutral composition core: from significant amount O2 at low pressures O/CO/C mixture high pressures, being determined mostly thermal equilibrium transport processes. change with lead higher ionisation coefficient more atomic ion core. These changes result degree 10−5 10−4. factors shown be fundamental drive discharge.