【摘要】 利用浸渍法制备了Pd/C催化剂,在固定床反应器上考察了Pd/C催化剂的苯酚选择性加氢制环己酮性能,探讨了反应温度、反应压力、氢酚摩尔比、苯酚重时空速等反应条件对催化剂催化性能的影响,通过正交实验测定了苯酚选择性加氢制环己酮反应的动力学数据,建立L-H-H-W动力学模型,并研究了所建动力学模型的适用性。实验结果表明,在常压,反应温度为175℃,氢气与苯酚摩尔比为4,苯酚重时空速为0.4 h^-1的条件下,催化剂的活性最佳;所建立L-H-H-W动力学模型可适用于苯酚选择性加氢制环己酮反应的研究,为反应器设计提供依据。更多还原

【Abstract】 Pd/C catalyst was prepared by impregnation method and selective hydrogenation of phenol to cyclohexanone over it was performed in a fixed-bed reactor to obtain the effects of reaction conditions（temperature,pressure,mole ratio of hydrogen to phenol,WHSV of phenol and the like） on catalyst activity. The experimental data of intrinsic kinetics of phenol selective hydrogenation over the Pd/C catalyst was measured by orthogonal experiments and a Langmuir-Hinshellwood-HougenWatson（L-H-H-W） kinetic model was established. Meanwhile,the applicability of the kinetic model was studied. The experimental results showed that the highest activity of the catalyst was achieved under specific conditions(0.1 MPa,175 ℃,n（H2）∶n（phenol） 4 and WHSV 0.4 h^-1). It has been proved that the kinetic model established based on L-H-H-W principle is reliable,which can provide basis for the reactor design.更多还原