HYDROXYLATION OF BENZENE BY HETEROPOLY ACIDS(SALTS)CONTAINING VANADIUM

摘要

Direct hydroxylation of benzene catalyzed by vanadium-con-taining heteropoly compounds with Keggin or Dawson structure has beeninvestigated.The effects of several factors upon the hydroxylationreaction have also been examined.It is indicated that the highestyield of phenol reached 76%(based on H2O?)with 99.4～100% selectivity.