Gliding arc/glow discharge for CO2 conversion: Comparing the performance of different discharge configurations

We studied the use of low current (hundreds milliamperes) gliding arc/glow discharges for CO 2 dissociation, at atmospheric pressure, in three different configurations. All these are based on arc design with flat diverging electrodes. The discharge is mainly normal glow regime contracted positive column. gas injected from a nozzle, closest separation between A pair quartz glasses placed both sides electrodes, so that flow restricted to active plasma area, For two tested configurations, an external magnetic field was applied, create force, direction flow, and opposite flow. In first case, accelerated, shortening period ignition extinction, while second it stabilized (magnetically-stabilized). quantities, namely conversion energy efficiency conversion. Generally, decreases increasing rate increases power. rate, all magnetically-stabilized configuration more stable efficient rates, but has poor performance high non-stabilized configurations exhibit good larger range they generally unstable less efficient. • Experimental study various types dissociation pressure. Low can be used efficiently dissociate . effects electrode material channeling were tested. magnetically shows rates 1–3 L/min.