| abstract |
The catalytically active mass of a catalyst molded body comprises a multi-element oxide containing vanadium and phosphorus. The specific pore volume PV (in ml/g) of the catalyst molded body, the bulk density p of the catalyst molded body (in kg/l), the geometric surface area A geo (in mm 2 ), and the geometric volume V geo (in mm 3 ) of the catalyst molded body satisfy the condition 0.275<PV·ρ·A geo /V geo . In a method for producing maleic acid anhydride by heterogeneously catalytic gas phase oxidation of a hydrocarbon, the catalyst molded body allows a lower pressure loss and a high yield. |