Selective catalytic reduction by NH3 (NH3-SCR) has been considered as one of the most efficient and mature techniques to eliminate nitrogen oxides (NOx) from coal-fired power plants. Therein

catalysts serve as the core of the whole system and study on their molding technology of the catalysts has become a hot topic. More and more attentions have been paid on how to mold a kind of catalysts with excellent deNOx performance and facile practical application. In this work

molding technology of V2O5-WO3/TiO2 deNOx catalysts was studied. Response surface methodology was used to investigate the regression models of mechanical strength and porosity of this kind of catalysts. The effects of pressing pressure and additive amount of PMMA microspheres on mechanical strength and porosity were evaluated and the significant regression models were obtained. High mechanical strength and porosity can be achieved when proper pressing pressure and additive amount of PMMA microspheres were chosen. It was shown by pore size distribution results that nano-micro hierarchical pores were obviously observed on the walls of catalysts. From XRD results

it was indicated that only anatase phase was found

possibly with high-dispersed V2O5 and WO3 species with low contents which cannot be detected. 80-90 m2·g-1 of surface areas can be obtained for this kind of catalysts by BET results. Micro pores were clearly observed by SEM after the addition of PMMA microspheres

which can increase the available surface area of catalysts

and thus decreasing the amounts and costs of catalysts. The results of activity tests showed that the honeycomb catalysts possessed excellent catalytic activity with high NOx conversion and N2 selectivity

which can meet the demands of deNOx in recent industry.