HUANG Haifeng, ZHANG Feng, LU Hanfeng, et al. Effect of preparation methods on structures and performance of MnOx/TiO2 catalyst for low-temperature NH3-SCR[J]. CIESC Journal, 2010, (1): 80-85.
HUANG Haifeng, ZHANG Feng, LU Hanfeng, et al. Effect of preparation methods on structures and performance of MnOx/TiO2 catalyst for low-temperature NH3-SCR[J]. CIESC Journal, 2010, (1): 80-85.DOI:
MnOx/TiO2(i),MnOx/TiO2(a) and MnOx/TiO2(c) catalysts were prepared by the impregnation,aggradation and coprecipitation methods respectively,and their properties were characterized with XRD
BET,FTIR
H2-TPR and n-butylamine titration.The results showed that MnOx/TiO2(c) had the largest BET surface area
pore volume and acidity
and the most concentrated pore size distribution and the best dispersion of MnOx on the surface of catalyst. The experiment results of NH3-SCR indicated that MnOx/TiO2 prepared by the coprecipitation method showed the best performance.The catalyst with 20% Mn content yielded 92.9% NO conversion at 140℃ at a space velocity of 60000 h-1.