Effect of Aluminum Sulfate on Abrasion Ratio of TiO₂-V₂O₅ Denitration Catalyst

TiO₂-V₂O₅ denitration catalyst with high wear resistance was prepared using aluminum sulfate as additive.Through analyzing the wear strength,denitration activity,pore structure and specific surface area of the catalyst,effects of aluminum sulfate additive were studied,and the mechanism of wear resistance improvement for the catalyst by aluminum sulfate was discussed.The results show that aluminum sulfate in the catalyst forms a three-dimensional grid to enhance the wear resistance of the catalyst at 650 ℃ of calcination temperature.When the addition amount of aluminum sulfate is 10 %,wear ratio of the catalyst is 0.079 %/kg,decreasing by about 28% compared to that of the conventional catalyst.The denitration efficiency of the catalyst is improved by introduction of sulfate,and the denitration efficiency of catalyst with 15 % of aluminum sulfate is 3.15% higher than that of the normal catalyst.