The plasma synthesis of ammonia has been studied in a nitrogen-hydrogen pla
sma using a strong electric field discharge at ambient pressure and tempera
ture. With this method, N-2 and H-2 molecules ave ionized and dissociated a
nd a large number of pec atoms, ions, and radicals are formed in a nonequil
ibrium plasma after inelastic collisions. The final product was mainly ammo
nia. including a small amount of hydrazine. When MgO powder, used as a cata
lyst, was smeared on the surface of the electrode plates, the yields of amm
onia increased about 1.54-1.75 times and reached 5000 ppm (0.5%; v/v). In t
his way: plasma synthesis of ammonia at ambient pressure is realized and a
new method is provided for inorganic synthesis, which consumes little energ
y and simplifies the process.