【摘要】 以钒钼磷杂多酸作为催化剂,用紫外可见分光光度法研究了过氧化氢直接将苯氧化羟基化为苯酚反应的动力学行为。结果表明,该氧化羟化反应速率对底物苯、氧化剂和催化剂都是一级反应,反应的活化能为57.73kJ.mol-1。本文推测了杂多酸配合物催化苯氧化羟化为苯酚反应的过程,建立了该反应动力学数学模型,模型很好地解释了实验结果。更多还原

【Abstract】 The kinetics of the direct hydroxylation of benzene to phenol using vanadium substituted heteropolymolybdates as catalysts and H₂O₂as oxidant was investigated by means of ultraviolet spectroscopy.It was found that the hydroxylation rate of benzene to phenol indicated first-order dependence with respect to the substrate,to the catalyst and to the oxidant,respectively.The activation energy of the reaction was evaluated to be 57.7kJ mol^-1.The process and a corresponding mathematic model for the kinetics of thereaction were proposed.更多还原