| abstract |
(57) [Summary] [Composition] One or more types of carriers may be provided with periodic table Ib, II. b, IIIa, IIIb, IVa, IVb, Va, VI An ammonia decomposing agent, comprising at least one active species selected from oxides of a, VIIa or VIII elements and nitrate radicals (NO 3 ). [Effect] Ammonia contained in the environment or exhaust gas from various factories can be efficiently removed. |