The catalytic activity of some vanadium phosphorus oxides was also compared, and the results showed that higher product yields were obtained when using acetonitrile as the solvent than using toluene.

• 此外，对不同钒磷氧化物的催化活性进行了比较，结果表明，在乙腈溶剂中的产品收率比在甲苯溶剂中高。