采用 CDS- 810微反系统 ,在实验条件为 :常压、氢苯比 3.0～ 8.0、温度 36 3.15 K～ 45 3.15 K时 ,进行了在四种不同粒度 Ni/ Al2 O3催化剂上的气相苯加氢反应。利用实验数据计算了不同反应组成、不同反应速率时苯的有效扩散系数、反应死区及催化剂的曲节因子。计算结果表明 :有效扩散系数不随反应速率改变 ,多孔催化剂的曲节因子可以看作多孔催化剂的结构参数 ,不随反应条件变化。 Using CDS-810 micro-inverse system, the experimental conditions of atmospheric pressure, hydrogen-to-benzene ratio of 3.0 to 8.0, temperature of 36 3.15 K to 45 3.15 K, carried out on four different particle size Ni / Al 2 O 3 catalyst benzene Hydrogen reaction. The experimental data were used to calculate the effective diffusion coefficient, reaction dead zone and catalyst section factor of different reaction compositions and reaction rates. The calculated results show that the effective diffusion coefficient does not change with the reaction rate, and the track factor of the porous catalyst can be regarded as the structural parameter of the porous catalyst without changing with the reaction conditions.