CO偶联制备草酸二甲酯的动力学研究  

Kinetic study of CO coupling reaction to produce dimethyl oxalate

作　　者：黄雄杰 李学刚[1] 肖文德[1] HUANG Xiong-jie;LI Xue-gang;XIAO Wen-de(Laboratory of Energy and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学化学化工学院

出　　处：《天然气化工—C1化学与化工》2019年第5期37-40,75,共5页Natural Gas Chemical Industry

摘　　要：CO和亚硝酸甲酯(MN)气相偶联制备草酸二甲酯(DMO)是合成气制乙二醇的第一步,本文采用Pd/α-Al2O3催化剂,在反应温度105~125℃、空速30000~65000mL/(g·h)条件下,利用管式固定床反应器实验装置测定了CO偶联反应动力学数据。将管式反应器看作一维均相模型,利用Matlab软件的ode45函数(即四阶-五阶Runge-Kutta算法)对实验数据进行拟合,得到CO与MN偶联制备DMO的反应动力学模型,为工业反应器设计和放大提供基础数据。The gas phase coupling of CO and methyl nitrite(MN) to prepare dimethyl oxalate(DMO) is the first and crucial step in the production of ethylene glycol from syngas. In this paper, a commercial catalyst of Pd/α-Al2O3 was used to determine the kinetic data of the CO coupling reaction in a tubular fixed bed reactor at 105-125° C and space velocity of 30000-65000 mL/(g·h). The tubular reactor was regarded as a one-dimensional homogeneous model, and the the ode45 function of Matlab software(ie, the fourthand fifth-order Runge-Kutta algorithm) was used to fit the experimental data to obtain the kinetic equation of the CO coupling reaction, which provids basic data for industrial reactor design and scale-up.

关 键 词：CO偶联 亚硝酸甲酯 草酸二甲酯 动力学 

分 类 号：TQ013.2[化学工程] TQ225.242