乙腈加氢制三乙胺的动力学研究

Study on the Kinetics of Acetonitrile Hydrogenation to Triethylamine

在等温固定床反应器上,研究了CHJ02型催化剂上乙腈加氢制三乙胺的反应本征动力学。反应在排除了内外扩散影响的条件下,测得了宏观反应速率。分别采用经验式幂函数和Langmuir-Hinshelwood型动力学模型,对实验数据进行了拟合,得到了相应的动力学参数。结果表明,两个模型的计算值和实验值较好的吻合,说明反应机理符合L-H过程,产物在催化剂上不吸附或弱吸附。

Intrinsic kinetics of acetonitrile hydrogenation to triethylamine w as studied. The kinetic data were collected from an isothermal integral fixed bed reactor in which resistance of pore diffusion and film diffusion of catalyst par ticle can be neglected. Both power and Langmuir-Hinshelwood kinetic models were examined and their kinetic parameters were obtained. They were helpful in desi g ning industrial reactor. Results showed that calculated values based on two mod e ls fit experimental values well. It indicated that reaction mechanics proceede d as in L-H process and the products were only weakly or not adsorbed on the cata lyst.