Use of semibatch reactor technology for the investigation of reaction mechanism and kinetics: Heterogeneously catalyzed epoxidation of fatty acid esters.
Use of semibatch reactor technology for the investigation of reaction mechanism and kinetics: Heterogeneously catalyzed epoxidation of fatty acid esters.
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DOI：
10.1016/j.ces.2020.116206
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发表时间：
2021-02-02
影响因子：
4.7
通讯作者：
Salmi T
中科院分区：
文献类型：
--
作者：
Perez-Sena WY;Wärnå J;Eränen K;Tolvanen P;Estel L;Leveneur S;Salmi T
更绿色、更安全的环氧化植物油生产。半间歇操作对反应性能的积极影响。基于合理机理的氧化铝催化环氧化反应动力学模型。与经典的Prileschajew环氧化方法相比，植物油通过过氧化氢的非均相催化环氧化代表了用于生产环氧化物的更绿色的路线和热更安全的反应路线。以油酸甲酯为模型化合物，采用半间歇实验方法研究了以氧化铝为催化剂，过氧化氢为氧化剂的非均相体系的环氧化反应动力学。结果表明，半间歇操作与传统的间歇操作相比，可显著提高反应性能，较低且恒定的过氧化氢体积流量可显著提高环氧乙烷的最终产率。半间歇反应器模型和动力学模型的开发，具有反应温度，反应物的摩尔比，催化剂负载量和质量流量作为最重要的实验参数。该数学模型能够很好地描述实验数据。该方法可应用于其它液-固催化剂体系，以优化复杂反应体系的半间歇操作策略。
Greener and safer production of epoxidized vegetable oil. Positive effect of semibatch operation on the reaction performance. Kinetic modelling based on plausible mechanism for the alumina catalyzed epoxidation. Heterogeneously catalyzed epoxidation of vegetable oils by hydrogen peroxide represents a greener route for the production of epoxides and a thermally safer reaction route compared to the classical Prileschajew epoxidation approach. The epoxidation kinetics of the heterogeneous system formed by aluminium oxide catalyst, hydrogen peroxide and methyl oleate as a model compound was studied with semibatch experiments in laboratory scale. It was found that semibatch operation improved the performance significantly compared to classical batch operation, a low and constant volumetric flowrate of hydrogen peroxide increased the final oxirane yield considerably. A semibatch reactor model and a kinetic model were developed, featuring the reaction temperature, the reactant molar ratio, the catalyst loading and the mass flow rate as the most significant experimental parameters. The mathematical model was able to well describe the experimental data. The approach can be applied to other liquid–solid catalyst systems in future in order to optimize the semibatch operation policy for complex reaction systems.
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影响因子：
4.7
作者：
Aguilera, Adriana Freites;Tolvanen, Pasi;Salmi, Tapio
通讯作者：
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影响因子：
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作者：
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影响因子：
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影响因子：
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影响因子：
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作者：
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