Y-Ba-Cu-O mixed oxides for production of diphenols in liquid-solid phase

摘要: Superconductor mixed oxides were often used as catalysts at higher temperature in gas phase oxidations, and considered not suitable for lower reactions the liquid-solid phase; here catalysis of YBa2Cu3O7+/-x Y2BaCuO5+/-x phenol hydroxylation with H2O2 oxygen donor was studied, found that superconductor YBa2Cu3O7+/-x, has no catalytic activity hydroxylation, but does, even better stability than most previously reported ones. With studies other simple metal perovskite-like oxides, a radical substitution mechanism is proposed experimental facts are explained clearly, draw conclusion (AO)(ABO(3)) (AO)2(ABO(3)) structure have perovskite (ABO(3))(3) alone, (AO) unit key to activity. No pollution this process very important its further industrial application.