An Atmospheric-Pressure Glow-Discharge Plasma Jet and Its Application

An atmospheric-pressure glow-discharge plasma jet driven by a transformer of 1 : 500 and an alternating current of 50 Hz is presented. Discharge characteristics are investigated by oscillograph observations, and it is verified no risk of arcing. The stable glow discharge is deemed to benefit from the transformer´s inductance. The electric characteristics and the plasma parameters are studied. The jet is employed in CO₂ reforming of CH₄ to syngas (H₂, CO). It brings out higher conversion ability than other plasmas such as dielectric barrier discharge and corona discharge, which is due to its special design and special plasma characteristic.