Ru/Al_(2)O_(3)催化剂上双酚A加氢反应动力学研究

Reaction kinetics of bisphenol A hydrogenation over Ru/Al_(2)O_(3)catalyst

采用等体积浸渍法制备了Ru/Al_(2)O_(3)催化剂,在间歇式反应釜中研究了双酚A的加氢反应动力学。根据Langmuir-Hinshelwood反应机理建立了双酚A加氢反应的动力学模型,并确定第一步加氢是决定反应速率的控制步骤。结果表明,通过计算得到双酚A与中间体4-(2-(4-羟基环己基)丙-2-基)苯酚的两步加氢反应所需活化能分别为66.46 kJ/mol和68.07 kJ/mol,动力学模型与实验数据之间存在良好的相关性。

Ru/Al_(2)O_(3)catalyst is prepared through using the equivalent volumetric impregnation method,and the kinetics of bisphenol A hydrogenation over the catalyst is studied in a batch reactor.The kinetic model for bisphenol A hydrogenation reaction is established based on the Langmuir-Hinshelwood reaction mechanism,and the first hydrogenation step is identified as the rate-determining step.It is verified that the activation energies required for the hydrogenation of bisphenol A and 4-(2-(4-hydroxycyclohexyl)prop-2-phenol,the intermediate,are determined to be 66.46 kJ·mol^(-1)and 68.07 kJ·mol^(-1),respectively.There is a strong correlation between the kinetic model and experimental data.