Destruction of 2,4-Dichlorophenol Vapor in a Process Involving the Combined Action of DBD in Oxygen and a Catalyst

• Published in: Plasma chemistry and plasma processing Vol. 44; no. 2; pp. 853 - 865
• Main Authors: Lapshova, K. A., Gordina, N. E., Kvitkova, E. Yu, Izvekova, T. V., Grinevich, V. I., Gusev, G. I., Rybkin, V. V., Gushchin, A. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2024; Springer Nature B.V
• Subjects: Catalysts; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Chlorine; Classical Mechanics; Decomposition; Decomposition reactions; Energy conversion efficiency; Energy efficiency; Inorganic Chemistry; Mechanical Engineering; Original Paper; Oxygen; Rate constants; Vermiculite; Zirconium; 2,4-dichlorophenol; Destruction; Dielectric barrier discharge; Catalyst
• ISSN: 0272-4324; 1572-8986
• DOI: 10.1007/s11090-024-10462-y

In this work, the process of decomposition of 2,4-dichlorophenol (2,4-DCP) vapor under the influence of atmospheric pressure DBD in oxygen was studied. The studies were carried out in two modes: with a catalyst (natural vermiculite doped with zirconium) and without it. A number of basic characteristics of the catalyst were assessed. The rates and effective rate constants of sorption processes, as well as decomposition processes in plasma and plasma-catalytic systems, were determined. Based on these data, the energy efficiency of the decomposition process was calculated. The data obtained suggested that the initial stage of decomposition is the reaction of interaction of electrons with pollutant molecules. The catalyst has been shown to speed up the decomposition process, increase energy efficiency and the conversion of 2,4-DCP to CO 2 molecules, and prevent the formation of condensed products on the reactor walls. The work estimates the carbon and chlorine balances before and after treatment, which reach a maximum of 99 and 60%, respectively. It was also shown that the catalyst retains its activity for at least 7 h of continuous operation.