| 非催化条件下异丙苯液相过氧化反应动力学 |
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| 引用本文： | 刘明鑫,许志美,孙伟振,张明华,赵玲.非催化条件下异丙苯液相过氧化反应动力学[J].化工学报,2015,66(5):1710-1715. |
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| 作者姓名： | 刘明鑫 许志美 孙伟振 张明华 赵玲 |
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| 作者单位： | 华东理工大学化学工程联合国家重点实验室, 上海 200237 |
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| 基金项目： | 教育部留学回国人员科研启动基金项目；国家自然科学基金项目(61333010)；高等学校学科创新引智计划项目(B08021)。@@@@supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars |
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| 摘 要： | 研究了非催化条件下异丙苯(IPB)液相氧化主副反应动力学,包括主要副产物α-甲基苄醇(MBA)和苯乙酮(ACP)生成规律以及重要链终止产物ROOR(DCP)的分解反应路径。基于烃类链式自由基反应机理,建立了包含反应物IPB、主产物过氧化氢异丙苯(IPBHP)、副产物MBA、ACP以及链终止产物DCP的反应动力学模型。动力学模型预测结果与实验数据吻合良好。通过对373~404 K下实验数据的拟合,得到了不同温度下各基元反应速率常数和活化能。模拟计算表明,两个副反应活化能均大于主反应;链终止产物DCP的分解反应通过氧气的参与进行。研究结果可为异丙苯液相氧化工业反应过程的设计和优化提供基础参数,并且有利于深化对烷基芳烃液相氧化反应机理的认识。
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| 关 键 词： | 异丙苯 氧化 反应动力学 过氧化氢异丙苯 参数估值 |
| 收稿时间： | 2014-12-08 |
| 修稿时间： | 2015-02-26 |
Reaction kinetics of non-catalytic peroxidation of liquid phase isopropyl benzene |
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| LIU Mingxin,XU Zhimei,SUN Weizhen,ZHANG Minghua,ZHAO Ling.Reaction kinetics of non-catalytic peroxidation of liquid phase isopropyl benzene[J].Journal of Chemical Industry and Engineering(China),2015,66(5):1710-1715. |
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| Authors: | LIU Mingxin XU Zhimei SUN Weizhen ZHANG Minghua ZHAO Ling |
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| Affiliation: | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Both main and side reaction kinetics of non-catalytic peroxidation of liquid phase isopropyl benzene (IPB) were investigated, including byproduct formation such as α-methyl benzyl alchohol (MBA) and acetophenone (ACP), and decomposition pathway of ROOR (DCP). Based on free radical chain reaction mechanism, a kinetic model was developed, in which IPB hydroperoxide (IPBHP), MBA, ACP and DCP were considered. The prediction by this kinetic model is agreed well with the experimental data, if the rate constants were used which were obtained by fitting of the experimental data at 373—404 K. The activation energies estimated were larger for all side reactions than for the main reaction. DCP decomposition requires the presence of oxygen. These data obtained could be helpful for deep understand of the reaction mechanism of liquid phase of alkyl aromatics and could be used as the fundamental data for design and optimization of industrial liquid phase oxidation of IPB. |
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| Keywords: | isopropyl benzene oxidation reaction kinetics isopropyl benzene hydroperoxide parameter estimation |
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