| 摘要 |
PURPOSE: To decompose and remove ammonia efficiently by causing a carrier to bear the active species of an oxide of a specific element and a group of nitrate as an ammonia decomposing agent. CONSTITUTION: A carrier of an oxide of titanium or aluminum and zeolite is caused to bear an active species selected from among oxides group Ib elements such as Cu and Ag of the periodic table, group IIb, elements such as Zn, group IIIa elements such as La, Ce, group IIIb elements such as Al, Ca, group IVa elements such as Ti, Zr group IVb elements such as Ge, Sn group Va elements such as V, Nb, group VIa elements such as Cn, Mo group VIIa elements such as Mn, or group VIII elements such as Fe, Co, Ni, and a nitrate group of manganese nitrate or iron nitrate. The catalyst thus obtained demonstrates a high activity in the decomposition of ammonia, because the selective reduction reaction of NOX is generated by ammonia by deposition of an NOX source on the catalyst. |
