Study of the plasma–liquid interaction for an argon nonthermal microwave plasma jet from the analysis of benzene degradation,Plasma Processes and Polymers

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Study of the plasma–liquid interaction for an argon nonthermal microwave plasma jet from the analysis of benzene degradation
Plasma Processes and Polymers ( IF 2.9 ) Pub Date : 2020-05-20 , DOI: 10.1002/ppap.202000030
Enrique Casado ₁ , Maria C. Garcia ₂ , Dorota A. Krawczyk ₃ , Francisco‐José Romero‐Salguero ₄ , Antonio Rodero ₁

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The interaction of an argon microwave plasma jet with a benzene layer on water has been analyzed under different conditions (power, gas flow, plasma‐sample distance, and treatment time) in this study. Main products formed upon treatment are phenol, catechol, and nitrobenzene, which shows that this jet is a source of radicals ^•OH and ^•NO₂, inducing benzene oxidation and nitration. Excited argon species in the plasma have been proven to play an outstanding role in degradation processes, which mostly occur at the gas phase. Results are compared with those from the direct interaction of the plasma jet with water. For this purpose, aqueous solutions of 3‐coumarin carboxylic acid are treated and the hydroxylation of this compound is studied. The effect of the benzene layer preventing water evaporation is demonstrated.

中文翻译：

从苯的降解分析研究氩非热微波等离子体射流的液-液相互作用

在本研究中，已经分析了在不同条件下（功率，气体流量，等离子体采样距离和处理时间）氩微波等离子体射流与水上苯层的相互作用。经处理形成的主要产物是苯酚，儿茶酚和硝基苯，这表明该喷射流是自由基^• OH和^• NO ₂的来源。，诱导苯氧化和硝化。等离子体中的激发氩物质已被证明在降解过程中起着重要作用，降解过程通常发生在气相中。将结果与等离子流与水直接相互作用的结果进行比较。为此，要处理3-香豆素羧酸的水溶液，并研究该化合物的羟基化作用。证明了苯层防止水蒸发的作用。

更新日期：2020-05-20

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