Role of ultrasonic oscillation in chemical processes in microreactors: A mesoscale issue--颗粒学报PARTICUOLOGY

Zhao, S., Yao, C., Dong, Z., Chen, G., & Yuan, Q. (2020). Role of ultrasonic oscillation in chemical processes in microreactors: A mesoscale issue. Particuology, 48, 88-99. https://doi.org/10.1016/j.partic.2018.08.009

Role of ultrasonic oscillation in chemical processes in microreactors: A mesoscale issue

Shuainan Zhao^{a b}, Chaoqun Yao ^a, Zhengya Dong ^a, Guangwen Chen ^a *, Quan Yuan ^a

a Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
b University of Chinese Academy of Sciences, Beijing 100049, China

10.1016/j.partic.2018.08.009

Volume 48, February 2020, Pages 88-99

Received 27 June 2018, Revised 30 July 2018, Accepted 23 August 2018, Available online 19 February 2019, Version of Record 27 January 2020.

E-mail: gwchen@dicp.ac.cn

Highlights

• Intensification by combining ultrasound and microreactors was highlighted.

• The effects of ultrasound on chemical processes in microreactors were reviewed.

• The effects of ultrasound on mesoscale structures in microreactors were discussed.

• Acoustic cavitation played the dominant role in ultrasound enhancement.

• Effects of process parameters on ultrasound enhancement were discussed.

Abstract

The integration of microreactor and ultrasound represents an emerging area for process intensification and has attracted considerable attention in recent years. One of the most important meso-scientific issues in ultrasound techniques is acoustic cavitation, which plays a vital role in the macroscopic performance of an ultrasonic microreactor. In this review, we first briefly summarize the latest research on acoustic cavitation phenomena in microreactors. The effects of channel configuration, solvent properties, and ultrasound parameters are systematically reviewed. In addition, the role of acoustic cavitation in various chemical processes (e.g., mixing, absorption, emulsification, and particle synthesis) is presented from a mesoscale perspective, which in turn provides guidance for ultrasound applications. A thorough understanding of the ultrasound intensification mechanism will contribute to the future development of this promising technology.

Graphical abstract

Keywords

Ultrasound; Microreactor; Acoustic cavitation; Mesoscale; Process intensification

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