CONVERSION OF 2-PROPANOL OVER CHROMIUM ORTHOPHOSPHATES

The conversion (dehydration/dehydrogenation) of 2-propanol on a series of CrPO4 (Cr/P=1) catalysts, differently prepared and thermally treat ed at 773-1073 K, has been studied by microcatalytic pulse reactor tec hnique at different temperatures (473-573 K). Catalytic performance is strongly affected by the precipitation agent. Catalysts obtained in p ropylene oxide-aqueous ammonia showed the highest activity towards pro pene compared to other catalysts. Calcination at increasing temperatur es caused a decrease in activity due to the decrease in surface acid c haracter. Dehydrogenation to 2-propanone occurs to a small extent at a ll reaction temperatures. Propene selectivity strongly increases with increasing reaction temperature.