Dynamics of Mediated Electrochemical Synthesis in Microemulsions

微乳液介导电化学合成动力学

• 批准号: 9306961
• 负责人: James Rusling
• 金额: $ 31.1万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9306961&HistoricalAwards=false
• 关键词: Dynamics; Mediated; Electrochemical; Synthesis; Microemulsions

James Rusling Abstract The goal of this project is an understanding of the dynamics of surfactant microstructures adsorbed on electrodes from microemulsions and their influence on rates of mediated reactions. Electrochemical kinetic studies are used to relate surfactant and reactant adsorption-desorption dynamics on electrodes to chemical reaction rates. Surface dynamics are measured by time-resolved flow voltammetry and by simplified electrochemical microscopy. the adsorption dymanics and reactivity of mediators on electrodes are also obtained. Using a stirred, batch, electrochemical reactor, the rates of mediated syntheses, measured by voltammetry, and of bulk electrolysis in microemulsions and in isotropic solutions are compared and correlations with adsorption dynamics are sought. Reactions selected for study include carbon-carbon bond formation, functional group deprotection, and production of olefins. Mediators include transition-metal corrins and phthalocyanine an their derivatives. Mediated electrochemical reactions (reactions involving an intermediate or catalyst that carries the electron (or hole) from the electrode to the substrate of interest) are enhanced by surfactants adsorbed on electrodes. Microemulsions offer an attractive way to introduce and control these processes. This approach can provide clean, efficient, cost-effective processes for producing high-value-added chemical products such as drugs and dyes.

詹姆斯·鲁斯林（James Rusling）摘要该项目的目的是了解微乳液中吸附在电极上的表面活性剂微结构的动力学及其对介导反应速率的影响。 电化学动力学研究用于将电极上的表面活性剂和反应物吸附 - 吸附动力学与化学反应速率联系起来。 表面动力学是通过时间分辨的流量伏安法和简化的电化学显微镜测量的。 还获得了介质对电极的吸附性染色体和反应性。 使用搅拌，批处理，电化学反应器，通过伏安法测量的介导的合成速率以及微乳液中的大量电解和各向同性溶液中的大量电解，并寻求与吸附动力学的相关性。 选择用于研究的反应包括形成碳 - 碳键，功能组弃盘和烯烃的产生。 介体包括过渡金属柱和邻苯二甲酸的衍生物。 在电极上吸附的表面活性剂增强了介导的电化学反应（涉及将电子（或孔）从电极到底物的中间或催化剂的反应。 微乳液提供了一种有吸引力的介绍和控制这些过程的方法。 这种方法可以提供清洁，高效，具有成本效益的过程，用于生产高价值的化学产品，例如药物和染料。