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醋酸环己酯催化水解动力学
1.南京工业大学化工学院,江苏 南京 210009 2.南京工业大学材料化学工程国家重点实验室,江苏 南京 210009
Kinetic Study of Catalytic Hydrolysis of Cyclohexyl Acetate
1. College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China; 2. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
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摘要 在消除外扩散影响的基础上,在搅拌转速700 r/min、反应温度348.15~368.15 K和催化剂用量10%~15%(基于醋酸环己酯与水总质量)的条件下,测定反应动力学数据,研究磺酸树脂(D006)催化醋酸环己酯水解制备环己醇的反应动力学,建立基于活度的LHHW动力学模型,并采用非线性最小二乘法拟合得到模型参数。结果表明,水解反应指前因子为9.532×106 mol/(g·min),活化能为60.94 kJ/mol,标准反应焓为21.85 kJ/mol,动力学模型拟合结果与实验值吻合较好。
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张竹修1
汤吉海1
陈幸福1
金 浩1
陈 献1
费兆阳1
2
刘 清1
崔咪芬1
乔 旭1
2
关键词 环己酯环己醇动力学活度水解    
Abstract:On the basis of eliminating the influence of external diffusion, the reaction kinetics data were measured under the conditions of stirring speed of 700 r/min, reaction temperature of 348.15-368.15 K and catalyst dosage of 10%-15% (based upon the total mass of cyclohexyl acetate and water) and the hydrolysis kinetics of cyclohexyl acetate for the preparation of cyclohexanol over the ion-exchange-resin catalyst (D006) was studied. The Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetic model based upon the activity was established and the model parameters were fitted by non-linear least-square method. The results showed that the pre-exponential factor, the activation energy and the standard reaction enthalpy of the hydrolysis reaction were 9.532×106 mol/(g·min), 60.94 kJ/mol and 21.85 kJ/mol respectively. The kinetic model fitted well with the experimental data.
Key wordscyclohexyl acetate    cyclohexanol    kinetics    activity    hydrolysis   
收稿日期: 2017-09-10     
基金资助:国家自然科学基金项目(21676141,21606130,21276126);江苏省“六大人才高峰”项目(2015-XCL-017);江苏省“333工程” 项目(BRA2016418);江苏省自然科学基金(BK20170989)。
作者简介: 张竹修(1988—),男,博士;汤吉海(1974—),男,教授,通讯联系人。E-mail: jhtang@njtech.edu.cn。
引用本文:   
张竹修1,汤吉海1,陈幸福1等. 醋酸环己酯催化水解动力学[J]. 化学反应工程与工艺, 2017, 33(5): 437-442.
Zhang Zhuxiu1,Tang Jihai1,Chen Xinfu1 et al. Kinetic Study of Catalytic Hydrolysis of Cyclohexyl Acetate[J]. 化学反应工程与工艺, 2017, 33(5): 437-442.
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