Oxidation catalyst for maleic anhydride production

摘要

A process for preparing a catalyst by selecting an active catalyst and contacting the active catalyst with one or more fluids containing an organic solvent or mixture of organic solvents. In one embodiment, each organic solvent has a dielectric constant within a range of about 5 to about 55 when measured at a temperature of 20° C. to 25° C. The catalyst thus prepared may be used in a process for preparing maleic anhydride.

主权项

1. A process for preparing a VPO catalyst comprising the steps of:
(i) selecting an active VPO catalyst prepared without using a pore builder comprising at least 90% by weight (VO)2P2O7 based on the weight of the catalyst; and (ii) contacting the active VPO catalyst with one or more fluids comprising an organic solvent.