SCR catalysis for NOx abatement: Fundamental and industrial aspects

The SCR process with ammonia has proven itself in power plants located around the world for the reduction of NO on an industrial scale. Since its implementation a broad discussion of the active species and mechanism involved has ensued, at times drifting away from practical aspects. Vanadia supported on titania have been demonstrated to be most efficient for SCR catalysis, especially if metal oxide additives influence active site. This paper will combine discussion on fundamental and industrial aspects with focus on the catalytic site.