CO催化偶联制草酸二乙酯催化剂的宏观反应动力学

采用固定床积分反应器，研究了自制的负载型钯系催化剂上CO气相催化偶联主、副反应的宏观动力学模型.所采用的催化剂是经过模式1000 h连续运转、性能稳定的φ1.5 mm×（3～5）mm圆柱状催化剂.在适宜的反应条件下测定了动力学实验数据，并采用一维拟均相模型建立了微分方程组.使用了幂函数宏观动力学模型，采用Runge-Kutta法解微分方程组，并用单纯形法确定动力学模型参数，同时进行了残差分析和统计检验.结果表明，所得的动力学模型与实验数据吻合良好，可以为草酸二乙酯合成反应器设计和放大提供依据.

Macrokinetics of CO catalytic coupling reaction to produce diethyl oxalate

The macrokinetics of CO gas coupling reaction on Pd catalyst was studied in a fixed-bed reactor.The size of the catalyst was φ 1.5 mm×(2—3) mm.The experiments were carried out on Pd catalyst at the optimum CO coupling reaction conditions of temperature 110—130℃, space velocity 0.146—0.292 mol•g^-1•h^-1, EN mole concentration 5%—15% and CO mole concentration 20%—35%.The Runge-Kutta and simplx methods were used to determine the parameters of kinetics models.The statistic test and residual error distribution were made to prove the validity of the kinetics models.The calculated results by the model were in agreement with the experimental data.The macrokinetics could provide theoretical foundation and guidance for simulation and scale-up of the reactor.