Patent ID: 7976784
Filing Date: 2011-07-12
Classification: B01D,B01J

Abstract:
1. A stationary source catalyst system for the treatment of an exhaust gas stream from a stationary power plant comprising an oxidation catalyst comprising particulate platinum dispersed on zirconia support particles, the oxidation catalyst being effective to convert no more than 20% NO to NO 2 in the exhaust gas stream from the power plant when the catalyst is fresh and after the catalyst has been exposed to a stationary power plant exhaust gas stream for up to at least one year and the particulate platinum having an average particle size less than about 10 nm when the catalyst is fresh and after the catalyst has been exposed to a stationary power plant exhaust gas stream for up to at least one year, the system having an SCR catalyst disposed downstream from the oxidation catalyst and an ammonia injection system located upstream from the SCR catalyst.