镍基均相络合催化剂苯加氢反应动力学研究

采用工业上应用较成功的HC-402-2型镍基均相Z iegler型络合催化剂,在排除扩散影响的条件下,研究了苯均相催化加氢制环己烷的反应动力学。在反应温度150~210℃、总压1.0~2.4MPa的范围内,考察了反应温度、氢分压和苯浓度对反应速率的影响。实验结果表明,苯加氢均相催化反应对苯浓度的反应级数为零级,对氢分压的反应级数为一级,反应活化能为36 435.27 J/mol。经检验,该动力学模型的相关系数大于0.9,模型合理,能够描述实际反应过程。

Kinetics of Benzene Hydrogenation with Homogeneous Ni-Based Complex Catalyst

Reaction kinetics of benzene hydrogenation was studied with HC-402-2 commercial homogeneous Ziegler Ni-base complex catalyst.The experiments were carried out without diffusion effect.The effects of reaction temperature,hydrogen partial pressure and benzene concentration on reaction rate were investigated in ranges of 150-210℃ and 1.0-2.4MPa(total pressure).Hydrogenation is zero-order reaction with benzene concentration and first-order reaction with hydrogen partial pressure.The apparent activation energy is 36 435.27J/mol.The correlation coefficient of kinetics model is more than 0.9.