Process for preparing a vanadium-based, high density, medium-porosity catalyst supported on a siliceous matrix.

摘要

A process for preparing a high-density, medium porosity catalyst, supported on a siliceous matrix and based on vanadium, oxygen and alkali metals, wherein the V2O5 content ranges from 6 to 9% by weight, the K2O content ranges from 8.5 to 12% by weight and the particle density ranges from 0.90 to 1.40 g/cm<3> and wherein furthermore: - the volume of the pores is from 0.30 to 0.70 cm<3>/g and the surface area is from 0.30 to 3 m<2>/g, the average radius of the pores ranging from 650 to 2200 nm; - the SiO2 content is at the most 75% by weight and the Fe2O3 content is at least 0.90% by weight.