| 摘要 |
PROBLEM TO BE SOLVED: To provide a VPO catalyst for the gas-phase oxidation of hydrocarbons, in particular for preparing maleic anhydride, which has improved catalysis performance, i.e., an improved degree of conversion and selectivity.SOLUTION: The present invention relates to a catalyst containing a vanadium-phosphorus oxide and an alkali metal. The proportion by weight of alkali metal in the vanadium-phosphorus oxide is in the range from 10 to 400 ppm, based on the total weight of the vanadium-phosphorus oxide. The present invention also relates to a process for producing the same, and the use of the catalyst for the gas-phase oxidation of hydrocarbons, in particular for preparing maleic anhydride. |
