Plasma synthesis of ammonia with a microgap dielectric barrier discharge at ambient pressure

The plasma synthesis of ammonia has been studied in nitrogen-hydrogen plasma using a microgap dielectric barrier discharge at ambient pressure. With the new technology of dielectric layers, the high-energy electrons are obtained in a narrow discharge gap; meanwhile, N₂ and H₂ molecules are ionized and dissociated and a large number of free atoms, ions, and radicals are formed in a nonequilibrium plasma after inelastic collisions. The final product was mainly ammonia, and the yield of ammonia reaches 12500 ppm (1.25%). In this way, plasma synthesis of ammonia at ambient pressure is realized and a new method is provided for inorganic synthesis.