New technology for selective catalytic oxidation of ammonia to nitrogen

Research paper by M. Ueshima, K. Sano, M. Ikeda, K. Yoshino, J. Okamura

Indexed on: 01 Feb '98Published on: 01 Feb '98Published in: Research on Chemical Intermediates


The selective catalytic oxidation (SCO) of ammonia to N2 was studied by using a series of noble metal-V2O5-WO3 catalysts supported on titania-silica (TS) prepared by coprecipitation method. In the V2O5-WO3 catalyst system, the use of TS as a support was very effective to enhance catalytic activity compared with TiO2 or SiO2 alone. The addition of a slight amount of Pd and Ir to V2O5-WO3/TS catalyst caused also remarkable enhancement of the catalytic activity without decreasing the selectivity to N2. The present catalysts provide remarkably high catalytic performance for SCO of ammonia to N2 under the practical reaction conditions for an industrial application.