顺酐气相加氢制备γ-丁内酯的动力学研究  

Kinetics Study on Maleic Anhydride Gas-Phase Hydrogenation to γ-Butyrolactone

作　　者：赵钢炜[1] 朱玉雷[1] 滕波涛[1] 郑洪岩[1] 相宏伟[1] 李永旺[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《高校化学工程学报》2006年第5期740-744,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金项目(20276077);山西省自然科学基金项目(20021023)。

摘　　要：在等温积分固定床反应器上，采用正交实验设计方法，在220-250℃、顺酐（MA）液体空速0．2～0．7h^-1、H2/MA摩尔比150～300条件范围内，在Cu-Zn-Al为催化剂上对顺酐加氢生成γ-丁内酯反应动力学进行了研究，得到的动力学方程为：r=2．57×10^14×exp（-1．32×10^2／RT）×CMA，该反应的活化能为Ea=132kJ·mol^-1。Hydrogenation of maleic anhydride is a very important way to produce γ-Butyrolactone（GBL）, which is one of the significant intermediates for the fine chemicals. The effects of different reaction conditions on the hydrogenation of MA, namely, temperature, liquid hour space velocity （LHSV） and H2/MA molar ratio, were investigated. Based on the study of mass transfer limitations experiments, which enables the kinetic data to be obtained in the kinetically limited regime, the kinetics for the hydrogenation of MA were studied over a Cu-Zn-Al catalyst in a fixed-bed micro-reactor. Experimental conditions were varied as follows： temperature from 220 to 250~C, LHSV from 0.6 to 1.4 h-~ and H2/MA feed molar ratio from 150 to 300. Kinetic calculation results show that the hydrogenation reaction of MA follows the first order reaction well over the kinetic experiments. The activation energy for the hydrogenation of MA is 132 kJ·mol^-1, which is in good agreement with values reported in literature. Hence the corresponding kinetics expression for the hydrogenation of MA to produce GBL is obtained as follows： r = 2.57×10^14 ×exp（-1.32×10^2/RT）×CMA.

关 键 词：顺酐 Γ-丁内酯 反应动力学 加氢反应 

分 类 号：TQ225.242[化学工程—有机化工] TQ203.7