羟基磷酸铜催化剂催化羟化苯酚动力学研究

Kinetics Study of Phenol Hydroxylation by Hydrogen Peroxide over Copper Hydroxyphosphate Catalyst

利用初始反应速率动力学方法研究以过氧化氢为氧化剂.羟基磷酸铜为催化剂催化氧化苯酚的动力学.对催化剂的用量、过氧化氢和苯酚浓度以及温度的影响进行了仔细研究.反应物和催化剂对该反应都是一级的,表观活化能为12 kJ/mol.在考虑到所有的吸附平衡后.给出了相应的动力学公式.

The kinetics of phenol hydroxylation over copper hydroxyphosphate in the presence of hydrogen peroxide as an oxidant was studied systematically. The influences of the amount of catalyst, the concentration of hydrogen peroxide and phenol, as well as the temperature were investigated. The reaction orders of the reactants and catalyst were obtained by using initial reaction rates method being first order with respect to the amount of catalyst and the concentrations of phenol and hydrogen peroxide. Also, the apparent activation energy was calculated to be 12 kJ/mol.