| 对二甲苯液相催化氧化动力学(Ⅰ)反应机理和动力学模型 |
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| 引用本文： | 王丽军 李希 谢刚 成有为. 对二甲苯液相催化氧化动力学(Ⅰ)反应机理和动力学模型[J]. 化工学报, 2003, 54(7): 946-952 |
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| 作者姓名： | 王丽军 李希 谢刚 成有为 |
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| 作者单位： | 浙江大学化学工程与生物工程学系，浙江 杭州 310027 |
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| 基金项目： | 国家自然科学基金 (No 2 0 0 760 3 9)，中国石油化工股份公司资助项目~~ |
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| 摘 要： | 针对PX高温液相催化氧化过程的特点开发了一套气液固三相反应实验技术，进行了氧化过程的动力学实验研究.根据自由基反应机理和Co-Mn-Br三元催化体系的作用机制对PX氧化过程进行了深入的剖析，分析了芳烃中甲基和醛基的各步氧化机理及其与催化剂循环之间的耦合作用.在此基础上推导出关于反应物浓度的动力学模型，并根据实验数据计算出各动力学参数.
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| 关 键 词： | 对二甲苯 氧化 反应机理 动力学 |
| 文章编号： | 0438-1157(2003)07-0946-07 |
| 收稿时间： | 2002-03-25 |
| 修稿时间： | 2002-03-25 |
KINETICS OF p-XYLENE LIQUID PHASE CATALYTIC OXIDATION（Ⅰ）REACTION MECHANISM AND KINETIC MODEL |
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| WANG Lijun,LI Xi,XIE Gang,CHENG Youwei and SIMA Jian. KINETICS OF p-XYLENE LIQUID PHASE CATALYTIC OXIDATION（Ⅰ）REACTION MECHANISM AND KINETIC MODEL[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(7): 946-952 |
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| Authors: | WANG Lijun LI Xi XIE Gang CHENG Youwei SIMA Jian |
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| Abstract: | In this paper, a novel experimental technique for gas-liquid-solid reaction was developed to study kinetics of p -xylene oxidation under the condition of high temperature and pressure. Methyl and aldehyed oxidation during the p -xylene oxidation process was studied according to radical reaction mechanism and recycling of the cobalt-manganese-bromide catalyst. The coupling effect between catalysts and radical reactions was analyzed in detail, and a kinetic model was developed based on the proposed mechanism.Model parameters were determined by data fitting.The model agreed well with the experiments. |
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| Keywords: | p-xylene oxidation reaction mechanism kinetics |
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