Oscillating droplet reactor – towards kinetic investigations in heterogeneous catalysis on a droplet scale,Reaction Chemistry & Engineering

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Oscillating droplet reactor – towards kinetic investigations in heterogeneous catalysis on a droplet scale
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2021-4-15 , DOI: 10.1039/d0re00466a
Torsten Klement _{1,

2,

3,

4} , Schirin Hanf _{4,

5,

6} , Fabian Wolff _{1,

2,

3,

4} , Norbert Kockmann _{4,

7,

8,

9} , Stephan A. Schunk _{4,

5,

6} , Thorsten Röder _{1,

2,

3,

4}

Affiliation

In this work we present a new concept of a millistructured capillary reactor setup for contactless kinetic measurements via in-line Raman spectroscopy for three phase reactions in single slugs. With this setup, it is possible to decouple the residence time from the volumetric flow and the reactor length. Catalysts palladium supported on carbon, in the form of Pd nano-particles on graphite fibres as well as in the form of a fixed bed catalysts as particulates of porous carbon, were utilised. A 3D-printed catalyst holder was designed to integrate the catalyst powder with a fixed bed in the capillary. The proof of concept was demonstrated using two test reactions, namely the hydrogenation of nitrobenzene and cinnamaldehyde. Multiple measurements were carried out and a good reproducibility was achieved, which lays the foundation for the application of this 3-phase oscillating droplet reactor as a tool for assessing kinetics with respect to heterogeneously catalysed three phase reactions.

中文翻译：

振荡液滴反应器–进行液滴规模多相催化动力学研究

在这项工作中，我们提出了一种毫米结构的毛细管反应器设置的新概念，用于通过在线拉曼光谱分析，用于单条塞中的三相反应。通过这种设置，可以将停留时间与体积流量和反应器长度脱钩。利用了负载在碳上的催化剂钯，其以石墨纤维上的Pd纳米颗粒的形式以及作为多孔碳颗粒的固定床催化剂的形式。设计了3D打印的催化剂支架，以将催化剂粉末与毛细管中的固定床结合在一起。概念验证使用两个测试反应进行了证明，即硝基苯和肉桂醛的氢化反应。进行了多次测量，并获得了良好的重现性，

更新日期：2021-04-15

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