溶液中辉光放电等离子体化学反应研究

Chemical reactions induced by glow discharge plasma in solution

分析了溶液中辉光放电等离子体过程中水分子在等离子体层、等离子体-溶液界面和主体溶液中的反应历程;介绍了水溶液体系中辉光放电等离子体电解引发的等离子体合成反应和高级氧化反应;对有机溶剂体系中的辉光放电等离子体电解反应进行了介绍。实验表明甲醇溶液辉光放电等离子体电解主要产物是氢气,还有少量一氧化碳、甲烷、乙烷、丙烷、1,3,5-三烷和水等,气相产物中氢气摩尔分数在86%以上。根据甲醇溶液中GDE过程中得到的产物分析,提出了甲醇分解的可能反应历程。

The reaction mechanism of water molecules induced by plasma in the glow discharge plasma sheath was given,and the reaction processes of water molecules in the interface of the plasma-solution and water molecules of the bulk solution were described.The plasma synthetic processes and advanced oxidation processes induced by glow discharge electrolysis in aqueous solution were reviewed.The chemical effects of the glow discharge plasma electrolysis in organic solutions were analyzed.The products of the reactions induced by the glow discharge plasmas were hydrogen,monoxide,methane,ethane,propane,sym-trioxane and water.The hydrogen concentration from the glow discharge electrolysis liberating gas was more than 86%(mol fraction).Based on the products and intermediate products of anodic glow discharge plasma electrolysis in methanol solution,using sulfuric acid as supporting electrolyte,a reaction mechanism of methanol molecules was suggested.