Co-Ni/γ-Al_2O_3催化剂上乙醇催化氨化合成乙腈反应的本征动力学

Intrinsic kinetics for amination of ethanol to acetonitrile over Co-Ni/γ-Al_2O_3 catalyst

引言乙腈是一种重要的溶剂和化工原料,广泛用于有机合成、农药、医药、石油化工、表面活性剂以及高分子材料等领域。此外,由于高纯乙腈对紫外线的吸收为零,并且具有独特的物理化学性质,因此,乙腈在高压液相色谱、电化学以及分光光度法分析中作为溶剂广泛使用[1]。目前。

A continuous flow fixed bed reactor was ethanol to acetonitrile over Co-Ni/γ-Al2O3 catalyst used to study the intrinsic kinetics for the amination of under atmospheric pressure, at reaction temperature in the range of 613 643 K, and the molar radio of ethanol to ammonia ranging from 1 ： 2 to 1 ： 10. The kinetic data were collected in the regime where internal and external particle diffusion resistances were absent by using catalyst in the appropriate average size range, appropriate range of residence time as well as other conditions necessary for plug flow and isothermal behavior in the reactor. Power law models were used to fit the experimental data, and the model parameters were fitted by non-linear regression using MATLAB software. The statistical test results showed that the calculated values based on the model were consistent with the experimental data.