Free-Radical Reactions in Supercritical Fluids

超临界流体中的自由基反应

• 批准号: 8617353
• 负责人: Mark McHugh
• 金额: $ 12.38万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-04-01 至 1989-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8617353&HistoricalAwards=false
• 关键词: Free; Radical; Reactions; Supercritical; Fluids

The objectives of this research are to investigate the kinetics of free-radical initiation reactions carried out in the single-phase, mixture-critical region. Research will determine the effect of the solvent properties of mixtures in their critical region (enhanced diffusivity, reduced viscosity, and enhanced solvent power) on the rate of formation of primary radicals via homolytic scission. The information generated in this study should suggest novel and more efficient means for performing reactions and separating reaction mixtures for many free-radical reactions such as polymerizations and oxidations. There is a change in mechanisms (viscosity and energy- transfer effects) which occur in going from a gas-phase to a liquid- phase reaction medium.

本研究的目的是研究在单相混合物临界区进行的自由基引发反应的动力学。研究将确定混合物在其临界区域的溶剂性质（增强扩散率、降低粘度和增强溶剂功率）对均裂形成初级自由基的速率的影响。在这项研究中产生的信息应该为许多自由基反应（如聚合和氧化）提供新的和更有效的方法来进行反应和分离反应混合物。在从气相反应介质到液相反应介质的过程中，发生了机理（粘度和能量传递效应）的变化。