Free-Radical Reactions in Supercritical Fluids

这项研究的目的是研究在单相混合临界区域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的溶剂性质(增强的扩散性、降低的粘度和增强的溶剂力)对通过均解裂解形成初级自由基的速率的影响。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执行反应和分离反应混合物。从气相反应介质到液相反应介质的反应机理(粘度和能量传递效应)发生了变化。

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.