摘要
采用内循环无梯度反应器,在排除外扩散的情况下,进行醋酸乙酯加氢制乙醇宏观动力学研究.实验采用催化剂为上海华谊技术研究院研制原颗粒φ3 mm×3 mm柱状铜基复合催化剂,考察了反应温度、压力和液时空速等对醋酸乙酯加氢制乙醇反应的影响,采用幂函数动力学参数,运用非线性最小二乘法,拟合得到醋酸乙酯加氢反应体系的宏观动力学模型.醋酸乙酯加氢制乙醇的表观活化能E_a为60.56 kJ/mol,对醋酸乙酯和H_2分压的反应级数分别为0.28和0.32.通过残差分析和统计检验,表明在一定的压力、温度和氢酯比范围内模型是适用的.
In an intemal gradientless recycle reactor, the experiments of ethyl acetate hydrogenation to ethanol was carried out in the condition of excluding external diffusion. The experiments were performed over copper-base cylindrical catalyst with the size of 3 mm×3 mm which was developed by technology research institute of shanghai hua yi group. The effect of the reaction temperature, pressure and liquid space velocities were investigated on hydrogenation system, and the macro-kinetic model of copper-base catalyst for ethyl acetate hydrogenation to ethanol was established by power function kinetic model fitting and the nonlinear least square method. The calculations showed that the apparent activation energy for hydrogenation of acetic ether was 60. 56 kJ/mol, and the ethyl acetate and H2 partial pressure reaction series are 0. 28 and 0. 32 respectively. The residual error distributions and the statistic tests showed that the proposed macro-kinetic models were reliable and applicable within the pressure, temperature and the ratio of hydrogen and ester.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期77-83,共7页
Journal of Fudan University：Natural Science
基金
上海市引进技术的吸收与创新资助项目(11XI-23)
关键词
加氢
宏观动力学
铜基催化剂
乙醇
hydrogenation
macro-kinetics
copper-based catalyst
ethanol
