DESIGN OF MONOLITH CATALYSTS FOR POWER-PLANT NOX EMISSION CONTROL

A mathematical model was developed to describe the reduction of NO with NH3 in simulated power plant stack gases, over the internal surfaces of monolith-shaped catalysts of the vanadia-titania type. The model indicated that up to 50% improvement in the volumetric activity of these catalysts would be possible if they could be prepared with the computed optimum pore structure. Based on the guidance of the computer calculations, a new type of catalyst was developed. It consists of vanadia, titania, and silica and shows the predicted 50% improvement in activity in laboratory experiments.