Patent ID: 7989385
Filing Date: 2011-08-02
Classification: B01D,B01J,F02C

Abstract:
1. A process for activating a catalyst system comprising: providing a catalyst system comprising zirconia support particles, palladium and a pre-sulfated zirconia binder; and activating the catalyst system by passing an activation gas stream comprising an amount of each of oxygen, water vapor, nitrogen oxides, and hydrogen over the catalyst system and increasing a temperature of the catalyst system to a temperature of at least 180° C. at a heating rate of from 1-20°/min; wherein a concentration of the nitrogen oxides is from 10-100 ppm, a concentration of the water vapor is from 1-25 vol. %, a concentration of the oxygen from 1-18 vol. %, and wherein a concentration of the hydrogen provides a hydrogen/nitrogen oxides molar ratio from 1-100.