%A Lina GAN,Shan LEI,Jian YU,Hongtao MA,Yo YAMAMOTO,Yoshizo SUZUKI,Guangwen XU,Zhanguo ZHANG %T Development of highly active coated monolith SCR catalyst with strong abrasion resistance for low-temperature application %0 Journal Article %D 2015 %J Front. Environ. Sci. Eng. %J Frontiers of Environmental Science & Engineering %@ 2095-2201 %R 10.1007/s11783-015-0824-8 %P 979-987 %V 9 %N 6 %U {https://journal.hep.com.cn/fese/EN/10.1007/s11783-015-0824-8 %8 2015-11-23 %X

Monolith SCR catalysts coated with V2O5-WO3/TiO2 were prepared by varying binder and coating thickness. Comparing with a monolith extruded with 100% V2O5-WO3/TiO2 powder, a coated monolith with a catalyst-coating layer of 260 μm in thickness exhibited the similar initial NOx reduction activity at 250°C. After 4 h abrasion (attrition) in an air stream containing 300 g·m−3 fine sands (50–100 μm) at a superficial gas velocity of 10 m·s−1, the catalyst still has the activity as a 100% molded monolith does in a 24-h activity test and it retains about 92% of its initial activity at 250°C. Estimation of the equivalent durable hours at a fly ash concentration of 1.0 g·m−3 in flue gas and a gas velocity of 5 m·s−1 demonstrated that this coated monolith catalyst is capable of resisting abrasion for 13 months without losing more than 8% of its initial activity. The result suggests the great potential of the coated monolith for application to de-NOx of flue gases with low fly ash concentrations from, such as glass and ceramics manufacturing processes.