AMMONIA DECOMPOSITION CATALYST AND AMMONIA TREATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a long-service life ammonia decomposition catalyst capable of effectively decomposing ammonia in an exhaust gas into nitrogen while suppressing a by-product of NOxand N2O which are air pollutants to the utmost.

SOLUTION: The ammonia decomposition catalyst keeps manganese of 0.5 to 60 wt.% of the whole catalyst carried by a carrier consisting of zeolite where a mole ratio of SiO2/Al2O3is 10 or more. The ammonia contained in the exhaust gas is oxidized, and is decomposed and removed, and its excellent ammonia resolution can be maintained for a long time by allowing the exhaust gas containing the ammonia to contact the catalyst.

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