An automated flow platform for accurate determination of gas-liquid-solid reaction kinetics

Xiaonan Duan, Jiacheng Tu, Andrew R. Teixeira, Le Sang, Klavs F. Jensen, Jisong Zhang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

35 引用 (Scopus)

摘要

An automated flow platform based on a tube-in-tube contactor and micro-packed bed reactor is developed to measure the kinetics of gas-liquid-solid hydrogenation reactions. The liquid flowing in the inner tube of the tube-in-tube contactor is rapidly saturated to ensure a constant H2 concentration before entering the micro-packed bed, which transforms the gas-liquid-solid system into a liquid-solid system. A ramping strategy is adopted in which the continuously varied residence time and the corresponding conversion data are obtained in a single experiment. Two reactions including hydrogenation of α-methylstyrene and nitrobenzene are chosen to demonstrate the accuracy and efficiency of this automated platform. Varying the flow rate ramping shows that accurate kinetic determination requires a specific range of flow rate ramps. A kinetic curve of conversion versus residence time (more than ten thousand data points) can be obtained in a single experiment within 50 min. The kinetic parameters obtained with this strategy agree well with literature values. The automated flow platform with flow rate ramping enables accurate determination of gas-liquid-solid reaction kinetics with higher efficiency and lower reagent cost compared with other methods.

源语言英语
页(从-至)1751-1758
页数8
期刊Reaction Chemistry and Engineering
5
9
DOI
出版状态已出版 - 9月 2020
已对外发布

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Duan, X., Tu, J., Teixeira, A. R., Sang, L., Jensen, K. F., & Zhang, J. (2020). An automated flow platform for accurate determination of gas-liquid-solid reaction kinetics. Reaction Chemistry and Engineering, 5(9), 1751-1758. https://doi.org/10.1039/d0re00191k