TRANSITION-METAL OXIDES SUPPORTED ON MGF2 MODIFIED WITH TIO2

The paper reports results of studies of a new support obtained by modi fication of magnesium fluoride surface with titania. The IR and cataly tic test results have shown favourable chang es of the surface of the support after titania addition including the appearance of new hydroxy ls as well as Lewis acid centres and redox sites. Introduction of acti ve phase (WO3, V2O5 or MoO3) onto the surface of MgF2-TiO2 resulted in an increased number of Lewis and Bronsted (WO3, MoO3, MoO3) or redox centres (V2O5) The catalysts based on the mixed support were found to be more active when compared with those supported on MgF2.