Plasma-Catalytic Oxidation of Toluene Over Mcezrox/Tio2 (M = Cu, Mn, Ni and Co) Catalysts Using a Dielectric Barrier Discharge

• DOI: 10.2139/ssrn.4553706
• Publication Date: 2023-08-28T07:48:26Z
• Authors: Guangtao Hu; Yichen Ma; Qinglan Hao; Deliang Liu; Baojuan Dou; Feng Bin

Plasma catalysis has been regarded as a promising technology for the removal of diluted volatile organic compounds (VOCs). In this study, hybrid process dielectric barrier discharge (DBD) was performed in VOC degradation using MCeZr/TiO2 (M = Cu, Mn, Ni, and Co) catalysts. Compared to plasma only system, plasma-catalytic system significantly enhanced conversion toluene CO2 selectivity, which can be attributed synergistic effects thermal on degradation. The performance follows sequence CuCeZr/T > NiCeZr/T CoCeZr/T MnCeZr/T plasma-catalysis. highest 99.0% selectivity 91.0% were achieved catalyst at power 30 W. plasma-generated energetic electrons reactive species participate activation gas phase facilitate adsorption surface. redox properties between Ce4+/Ce3+ Cu+/Cu2+ determine reducibility catalyst, promotes oxygen cycling during oxidation lead favourable catalytic performances. Based analysis results GC-MS, optical emission spectroscopy calculations electron-impact reactions, pathways destruction plasma-catalysis are discussed detail.