Plasma-catalytic ammonia decomposition using a packed-bed dielectric barrier discharge reactor

Plasma-catalytic ammonia decomposition as a method for producing hydrogen was studied in packed-bed dielectric barrier discharge (DBD) reactor at ambient pressure and fixed plasma power. The influence of packing the zone with various materials, typically used catalyst supports, examined. At conditions (21 W, 75 Nml/min NH 3 ) where an conversion 5% achieved alone, improved found when introducing materials constants between 4 30. Of tested MgAl 2 O yielded highest (15.1%). particle size (0.3–1.4 mm) to have modest on conversion, which dropped from 15.1% 12.6% increasing size. Impregnation different metals decrease Ni impregnation still showing (7%) compared plasma-only. plasma-assisted occurs gas phase due micro-discharges, evident linear correlation frequency micro-discharges both alone solid materials. primary function is thus facilitate reaction by assisting creation micro-discharges. Lastly, insulation raise temperature 230 °C negative effect change volume discharges surface occurred. study shows that can be decomposed provide exposure non-thermal plasma, but further developments are needed it become energy efficient technology. • achieve conditions. Introduction ? = 4–30 conversion. (? 8.3) 15%. A number found. primarily proceeds collision electrons.