Presentation Information
[11a-E204-11]Influence of operating pressure on CO formation in non-thermal plasma: From low to atmospheric conditions
〇Pankaj Attri1, Takamasa Okumura1, Kunihiro Kamataki1, Masaharu Shiratani1, Kazunori Koga1 (1.Kyushu University)
Keywords:
CO formation,CO2 capture
Carbon dioxide (CO2) is the most prevalent greenhouse gas threatening global climate stability [1]. Emissions have escalated dramatically since the pre-industrial era (1850s) through the 2000s [2]. To avoid severe climate consequences, the 2018 United Nations Intergovernmental Panel on Climate Change (IPCC) report emphasized a critical mandate: reduce global CO2 emissions by 45% by 2030 [3]. Consequently, global carbon neutrality efforts focus heavily on CO2 capture, storage, and conversion strategies. Innovative technologies developed for CO2 conversion include solar thermochemical, electrochemical, photochemical, catalytic, biochemical, and plasma-driven systems [4]. To optimize cost-effectiveness and operational simplicity, this study focuses on evaluating these conversion processes within atmospheric and low-pressure non-thermal plasma (NTP) systems.
In our study, we used imidazolium-based ILs to elucidate the roles of cations and anions in CO formation [5]. This work demonstrates IL reusability for CO production via plasma treatment and highlights the influence of cation–anion combinations on system performance [5]. In another study, we used low-pressure RF plasma at various pressures to investigate CO2 dissociation with or without humidity [6]. The primary observation is that the absolute irradiance of CO+ and O increases under humid conditions, which are crucial to plasma-assisted CO formation in our low-pressure RF plasmas experiments. There is a need to identify additional approaches that provide a low-cost, effective pathway for CO2 capture and conversion.
In our study, we used imidazolium-based ILs to elucidate the roles of cations and anions in CO formation [5]. This work demonstrates IL reusability for CO production via plasma treatment and highlights the influence of cation–anion combinations on system performance [5]. In another study, we used low-pressure RF plasma at various pressures to investigate CO2 dissociation with or without humidity [6]. The primary observation is that the absolute irradiance of CO+ and O increases under humid conditions, which are crucial to plasma-assisted CO formation in our low-pressure RF plasmas experiments. There is a need to identify additional approaches that provide a low-cost, effective pathway for CO2 capture and conversion.