1-己烯热裂解反应动力学分析

在873~973 K温度区间，用柱塞流连续流动管式反应器考察1-己烯热裂解反应。根据反应产物的种类分布并结合自由基基元反应化学，建立1-己烯热裂解链式反应机理模型，推导出相应的反应动力学方程。通过拟合反应实验数据，证实1-己烯热裂解转化具有一级反应动力学的特征，反应温度从873 K依次升高到923 K和973 K，反应速率常数从0.0312 s-1提高到0.116 s-1和0.453 s-1。在所观察的温度区间，该反应的表观活化能为（188.7±1.0）kJ/mol。

KINETICS ANALYSIS OF 1-HEXENE PYROLYSIS

Pyrolysis of 1-hexene was conducted with a plug-flow continuous tube reactor under the temperature range of 873-973 K. According to the product distributions and the chemistry of radical reactions, a chain reaction mechanism for 1-hexene pyrolysis was proposed and a corresponding kinetic model was set up. Fitting the model with experimental data showed that the conversion of 1-hexene was a first order reaction. When the reaction temperature increased from 873 K to 923 K and to 973 K, the rate constants were 0.0312 s-1, 0.116 s-1 and 0.453 s-1, respectively. The apparent activation energy of the pyrolysis of 1-hexene in the tested temperature range (873-973 K) was determined to be 188.7±1.0 kJ/mol.