EFFECTS OF SIO2 ON THE CATALYTIC PROPERTIES OF TIO2 FOR THE INCINERATION OF CHLOROFORM

The effects of the addition of silica to titania were examined via a comparison of TiO2 and TiO2/SiO2. Various characterizing techniques such as XRD, FT-IR, and temperature-programmed ammonia desorption (TPAD) were utilized for this investigation. The activity of the catalysts for the incineration of chloroform was explored under atmospheric pressure through a continuous flow tubular reactor. The results revealed that the addition of silica enhanced the dispersion of titania and formed Ti-O-Si bonds. The activity of TiO2 was increased about 60% with the incorporation of 43 wt.-% silica. The ignition temperature of chloroform on TiO2 was not altered by SiO2. However, the characteristics of the deactivation and the acidity of TiO2 were modified by the incorporated silica.