Abstract
The selective catalytic oxidation (SCO) of ammonia to N 2 was studied by using a series of noble metal-V 2 O 5 -WO 3 catalysts supported on titania-silica (TS) prepared by coprecipitation method. In the V 2 O 5 - WO 3 catalyst system, the use of TS as a support was very effective to enhance catalytic activity compared with TiO 2 or SiO 2 alone. The addition of a slight amount of Pd and Ir to V 2 O 5 -WO 3 /TS catalyst caused also remarkable enhancement of the catalytic activity without decreasing the selectivity to N 2 . The present catalysts provide remarkably high catalytic performance for SCO of ammonia to N 2 under the practical reaction conditions for an industrial application.
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