2-戊基蒽醌氢化本征动力学研究

Intrinsic Kinetic Study on Hydrogenation of 2-amylanthraquinone

采用商品化的Pd/Al2O3催化剂,在温度为313.15-343.15K、压力为0.1-0.2MPa的条件下,研究了2-戊基蒽醌加氢本征动力学。反应在体积比为3：1的三甲苯/磷酸三辛酯混合溶剂中进行。采用幂指型方程表达加氢反应速率,并用多元线性回归分析对测得的动力学数据进行处理,得到了方程中的参数。结果表明,2-戊基蒽醌加氢反应对2-戊基蒽醌浓度为零级;对氢气分压为0.48级,反应活化能为15663J·mol^-1。

The intrinsic kinetics for hydrogenation of 2-amylanthraquinone over Pd/Al2O3 commercial catalysts was studied at temperature from 313.15 to 343.15 K and hydrogen pressures from 0.1 to 0.2 MPa. The hydrogenation reaction of 2-amylanthraquinone was carried out in the mixture medium which consists of trimethylbenzene and trioctylphosphate with the volume ratio of 3：1. An exponential model was employed to describe the reaction rate, and the kinetic parameters were obtained by multivariate linear regression analysis. The results show that the reaction rate is zero order for the concentration of 2-amylanthraquinone and 0.48 order for hydrogen pressure, respectively, and the activation energy for hydrogenation is 15663 J·mol^-1.