Experimental study of the plasma chemistry in atmospheric pressure plasma contacts with dilute sulfuric acid

ORAL

Abstract

Our previous study developed a gas-liquid interfacial plasma sulfonation system under atmospheric pressure conditions. During the plasma sulfonation process, droplets emit when the plasma attacks the solution surface, and some active species (•OH, HOSO2•) and long-lived species (SO2, SO3, H2O2) are generated. In this work, the gaseous elements (long-live species) were measured by the Fourier-transform infrared spectrometer (FTIR) and mass spectrometer (MS) during liquid-cathode and liquid-anode discharge. •OH generation was confirmed by optical emission spectroscopy. It is found that SO2 and some other species are only produced with droplets transmitted in the liquid-cathode discharge.

*This research was partially performed by the Environment Research and Technology Development Fund JPMEERF20223R01 of the Environmental Restoration and Conservation Agency of Japan; JST SPRING, Grant Number JPMJSP2106. The author would like to thank the financial support of the Tokyo Tech Academy of Energy and Informatics(ISE).

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Presenters

  • Siqi Deng

    • Electrical and Electronic Engineering , Tokyo Institute of Technology

Authors

  • Siqi Deng

    • Electrical and Electronic Engineering , Tokyo Institute of Technology

  • Nozomi Takeuchi

    • Electrical and Electronic Engineering , Tokyo Institute of Technology
    • Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
    • Tokyo Institute of Technology, Tokyo
    • Tokyo Institute of Technology

  • Junko Hieda

    • Nagoya University
    • Department of Chemical Systems Engineering, Nagoya University

  • Katsuyuki Takahashi

    • Iwate University
    • Faculty of Science and Engineering, Iwate University
    • Iwate university

  • Kosuke Tachibana

    • Oita University
    • Department of Innovative Engineering, Oita University

  • Oi Lun Li

    • Pusan National University
    • School of Materials Science and Engineering, Pusan National University