LI Junjie, MU Yang, YANG Juan, et al. Properties of sulfation supported V/Ti denitration catalyst[J]. CIESC Journal, 2013, (4): 1249-1255.DOI: 10.3969/j.issn.0438-1157.2013.04.018.
A series of V2O5-WO3-TiO2/SO42- catalysts were prepared with the impregnation method using nano-TiO2 support sulfated according to three different orders of sulfating TiO2 support and with different acid amounts.Characterization of the catalysts with XRD
BET
FT-IR and TG-DTG showed that sulfating the catalyst support decreased the specific surface area of the resulting catalyst but did not vary its crystal form.Sulfation caused as well strong interactions between WO3 and the sulfate of the loaded active component.Temperature-programmed activity tests demonstrated further that sulfation increased catalytic activity by increasing the acidity of the catalyst at 120—400℃.This was confirmed also with NH3-TPD for the prepared V/Ti denitration catalysts.