Preparative application of liquid-plasma interaction

液-等离子体相互作用的制备应用

• 批准号: 11450337
• 负责人: TEZUKA Meguru
• 金额: $ 8.51万
• 依托单位: Saitama Institute of Technology (SIT)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450337/
• 关键词: liquid-phase plasma; glow discharge electrolysis; oxidative degradation; hydroxyl radical; perhalocarbons; dishlorocarbene

The goal of the present research is the creation of a novel reaction medium involving liquid-phase plasma in order to develop the preparative method of organic or inorganic substances. Hitherto, it has been taken for granted that the reactions under such an extremely energetic condition should be destined to be unselective. In the present research, it was undertaken to utilize the interaction between gaseous plasma and liquid solution and reactive species inductively generated in the solution to improve the selectivity.Organic substances dissolved in aqueous solution were effectively decomposed to carbon dioxide when a plasma was sustained over the solution surface by means of glow discharge electrolysis. It was suggested that hydroxyl radical would play a crucial role in the mineralization. When perhalocarbons were used as liquid media in contact with gaseous plasmas, the formation of carbonaceous precipitate or deposit on the discharge electrode was observed.1. Mechanistic study of liquid-phase oxidation induced by gaseous plasma(1) Oxidative degradation of phenols by using an atmospheric pressure dc plasma(2) Iodometric determination of the generation rate of highly reactive oxidant(3) Mineralization pathway involving hydroxyl radical(4) Organic oxidation using high voltage ac plasma(5) Measurement of emission spectra from liquid-plasma interface2. Preparation of carbonaceous substances utilizing liquid-phase plasma reactions(1) Formation of C1〜C6 halocarbons from polychloromethanes or polychloroethylenes(2) Characterization of carbonaceous precipitate or deposit on the discharge electrode(3) Dechlorocarbene as intermediate super-reactive species

本研究的目标是创造一种新型的反应介质，包括液相等离子体，以发展有机或无机物质的制备方法。迄今为止，人们想当然地认为，在这样一种极高能量条件下的反应应该是无选择性的。本研究利用气体等离子体与液体溶液的相互作用以及溶液中感应产生的活性物种来提高选择性，在辉光放电电解过程中，当等离子体持续作用于溶液表面时，溶解在水溶液中的有机物被有效地分解为二氧化碳。表明羟基自由基在成矿过程中起着至关重要的作用。以全卤烃为液体介质与等离子体接触时，放电电极上碳质沉淀或存款的形成被抑制.气相等离子体诱导液相氧化的机理研究（1）大气压直流等离子体氧化降解苯酚（2）碘量法测定高活性氧化剂的生成速率（3）羟基自由基的矿化途径（4）高压交流等离子体氧化有机物（5）液相-等离子体界面发射光谱的测量2.利用液相等离子体反应制备含碳物质（1）由多氯甲烷或多氯乙烯形成C1-C6卤烃（2）放电电极上的含碳沉淀物或存款的表征（3）作为中间超活性物质的去氯卡宾

项目成果

M.Tezuka: "Liquid-phase reactions induced by gaseous plasma. Decomposition of benzoic acids in aqueous solution"Plasmas & Ions. 2-1. 23-26 (1999)

M.Tezuka：“气态等离子体诱导的液相反应。苯甲酸在水溶液中的分解”等离子体

M.Tezuka: "Aromatic cyanation in contact glow discharge electrolysis of acetonitrile"Thin Solid Films. (in press).

M.Tezuka：“乙腈接触辉光放电电解中的芳香族氰化”固体薄膜。

M.Tezuka: "Plasma-induced degradfation of aniline in aqueous solution"Thin Solid Films. 386. 204-207 (2001)

M.Tezuka：“水溶液中苯胺的等离子体诱导降解”固体薄膜。

M.Tezuka: "Effects of electric fields in contact glow discharge electrolysis of acetonitrile solution"Trans.MRS-J. 25-1. 115-118 (2000)

M.Tezuka：“电场对乙腈溶液接触辉光放电电解的影响”Trans.MRS-J。

M. Tezuka and M. Iwasaki: "Plasma-induced Degradation of Aniline in Aqueous Solution"Thin Solid Films. 386. 204-207 (2001)

M. Tezuka 和 M. Iwasaki：“水溶液中苯胺的等离子体诱导降解”固体薄膜。