Effect of calcination temperature on the structure of vanadium phosphorus oxide materials and their catalytic activity in the decomposition of 2-propanol

الملخص EN

The synthesis of vanadyl phosphate by reaction of an alcoholic solution of V2O5 and o-H3PO4 has been studied.

The solids obtained were investigated by various physico-chemical techniques as in situ X-ray diffraction (XRD), thermogravimetric analysis (TGA), and differential thermal analysis (DTA) under inert atmosphere.

The compounds have been further characterized by infrared and UV-Visible spectroscopies.

The isopropanol conversion is carried out to evaluate the catalytic activity of the samples.

The isopropanol conversion increases with the reaction temperature from 433 to 503 K for vanadyl phosphorus oxides calcined at a different temperature.

However, the conversion attains 100% at 503 K, and the solid calcined at 973 K exhibits high selectivity towards propene (100% at 503 K).