| 摘要 |
PURPOSE:To efficiently decompose ammonia and to convert the same to nitrogen and hydrogen even at a relatively low temp. by combining a rare earth element compd. as the 2nd component with nickel. CONSTITUTION:The compds. of the oxide, nitrate, etc., of rare earth elements, such as La2O3, Y2O3 and CeO2, are combined with the nickel catalysts consisting of nickel chloride, nickel nitrate, etc. Particularly the activity of the nickel to decompose the ammonia is greatly improved when the resulted catalyst is brought into contact with the ammonia recovered from coke furnace gases. This activity is particularly remarkable at a low temp. of about >=600 deg.C. The ammonia is, therefore, efficiently decomposed and is converted to nitrogen and hydrogen. |
