Journal
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume 163, Issue -, Pages 384-394Publisher
ELSEVIER
DOI: 10.1016/j.psep.2022.05.028
Keywords
Chlorobenzene; Plasma-catalysis; FexMny/Al2O3; Removal pathways
Categories
Funding
- Technology Innovation Special Foundation of Hubei Province [2021BCA151, 2020BCB060,2020BAB074, 2020ZYYD019, 2019ACA157]
- Foundation for Outstanding Youth Innovative Research Groups of Higher Education Institution in Hubei Province [T201902]
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This study investigates the application of a series of high-efficient and low-cost FexMny/Al2O3 catalysts in the removal of chlorinated volatile organic compounds (CVOCs) using nonthermal plasma. The results show that the plasma-Fe1Mn1/Al2O3 system exhibits the best performance with high conversion efficiency and CO2 selectivity, and the synergy between plasma and catalyst significantly enhances the chlorobenzene removal efficiency.
Fe and Mn are the transition-metals that have advantages of low cost and easy availability. In order to high efficient remove chlorinated volatile organic compounds (CVOCs), a series of high-efficient and low-cost FexMny/Al2O3 catalysts were synthesized by reflux-coprecipitation method, and the removal of chlorobenzene, a CVOCs model compounds, was studied in a nonthermal plasma coupled with FexMny/Al2O3 system at room temperature. The kinetic parameters of the chlorobenzene removal in the nonthermal plasma reactor coupled with FexMny/Al2O3 were obtained. Meanwhile, the reaction route of the chlorobenzene removal in the nonthermal plasma coupled with FexMny/Al2O3 reactor was revealed. The results indicated that the best conversion efficiency and the highest CO2 selectivity of the chlorobenzene removal in the plasma-Fe1Mn1/Al2O3 system were in sequence as 95.77% and 93.11%. Moreover, the positive synergy between the plasma and the FexMny/Al2O3 catalysts greatly reduced the activation energies of the chlorobenzene removal, and improved the chlorobenzene removal efficiency in the plasma-FexMny/Al2O3 system. Finally, the possible reaction routes of the chlorobenzene removal in the plasma-Fe1Mn1/Al2O3 system were proposed based on the intermediates identified by the GC/MS.(c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
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