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Dedieu P, Morand G, Loubière K, Ognier S, Tatoulian M. Microreactor designed for efficient plasma-liquid segmented flows. LAB ON A CHIP 2024. [PMID: 38984493 DOI: 10.1039/d4lc00315b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Microreactors were designed for gas-liquid plasma chemical processes and operated under segmented flows in a high aspect ratio (8.76) rectangular microchannel. First, the hydrodynamics of the gas-liquid flows generated at a T-junction was investigated for fifteen solvents commonly used in organic synthesis. The classical literature scaling laws were revised to describe the dependence of bubble and slug lengths, and bubble residence time on the liquid nature by introducing their liquid vapour pressure. Liquid film thickness and liquid residence time were estimated from residence time distribution experiments. Secondly, plasma could be successfully generated in these segmented flows for all the liquids. Due to the plasma dissipation of thermal energy, gas phase temperature increased and induced the lengthening of bubbles and the decrease in bubble residence time. The flow pattern was also impacted by the gas temperature increase. A flow map describing the evolution of the flow pattern under plasma conditions was built, enabling prediction of the flow pattern based on the liquid boiling point and dielectric constant. These microreactors have demonstrated great potential, and by adapting the synthesis solvent or the operating plasma conditions, they could find promising applications in gas-liquid plasma chemical processes.
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Affiliation(s)
- Pierre Dedieu
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM Group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Gabriel Morand
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM Group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Karine Loubière
- Laboratoire de Génie Chimique, UMR 5503, Université de Toulouse, INPT, UPS, 4 Allée Emile Monso, Toulouse, France
| | - Stéphanie Ognier
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Sorbonne Université, 11 rue Pierre et Marie Curie, 75005 Paris, France.
| | - Michael Tatoulian
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM Group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005 Paris, France
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Surfactant effect on mass transfer characteristics in the generation and flow stages of gas–liquid Taylor flow in a microchannel. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Wang M, Xia H, Zhu L, Zhang Y. Regulating the Gas–Liquid Slug Flow in Microchannels through High-Frequency Pulsatile Perturbations. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Meng Wang
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Huanming Xia
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Li Zhu
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Yanyin Zhang
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
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Sheng L, Li S, Wang K, Chang Y, Deng J, Luo G. Gas–Liquid Microfluidics: Transition Hysteresis Behavior between Parallel Flow and Taylor Flow. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lin Sheng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Shaowei Li
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 102201, China
| | - Kai Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Chang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jian Deng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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