Effect of support material on the catalytic performance of V 2O 5/P 2O 5 catalysts for the selective oxidation of but-1-ene and furan to maleic anhydride and its consecutive nonselective oxidation : I. Results of Catalytic Testing

Abstract

The performance of Al 2O 3- and TiO 2-supported V 2O 5/P2O5 catalysts was studied with respect to activity and selectivity for the oxidation of but-1-ene and furan to maleic anhydride (MA) and its consecutive nonselective oxidation. TiO 2-supported catalysts result in better selectivities for MA both for but-1-ene and furan oxidation. For both the supports MA selectivity was affected by the amount of V 2O 5 and P 2O 5 loading: An increase of the V 2O 5/P 2O 5 loading resulted in improved MA selectivity for the Al 2O 3 support while the effect was opposite in the case of the TiO 2 support. For the oxidation of but-1-ene and furan the activity of the TiO 2-supported catalyst (V 2O 5/P 2O 5/TiO 2, = 5/ 5/90 mass-%) was higher than the Al 2O 3-supported catalyst (V 2O 5/P 2O 5/Al 2O 3 = 5/ 5/90 mass-%) while for the non-selective oxidation of MA to carbon dioxide the Al 2O 3,-supported catalyst was more active than the TiO 2-supported catalyst.