| 摘要 |
<p>OXIDATION OF ALKANES TO DICARBOXYLIC ACID ANHYDRIDES USING PROMOTED VANADIUM PHOSPHORUS CATALYST There is provided an improved process for the vapor phase oxidation of alkanes to dicarboxylic acidanhydrides, particularly butane to maleic anhydride, which comprises using a vanadium-phosphorus-oxygen complex catalyst having a P/V atomic ratio of 0.5-2, promoted or modified with certain transition metals, preferably chromium, iron, or hafnium. Using these catalysts, the oxidation process can be carried out at lower temperatures and increased yield as compared to the unpromoted complex.</p> |
