Engineering Research Equipment Grant: Flow Reactor for Oxidation Studies in Supercritical Water

已经开发了几种技术来安全处置 危险废物。 对于含有中等有机物的稀水流 浓度，在超临界水（SCW）中氧化至无害 化合物（如二氧化碳和水）已被证明是 有效 PI研究的总体目标是阐明 基本反应途径、动力学和发生机制 在这种氧化过程中，在超临界水和充分了解的作用， 超临界流体在这些反应中的作用。 的理解 基本的物理和化学现象的运作过程中 该方法可导致更有效和经济的方法 的设计. 在这一阶段的工作中，PI计划对 一些典型的有机化合物（如苯酚和 取代的苯酚）。 这批设备 将提供资金购买建造所需的组件， 流动反应器。 流动反应器非常适合实验 研究这种快速的放热反应。 利用实验 结果，PI计划推断反应途径并确定 相关的动力学参数，如反应级数、速率 每个反应的常数、活化能和活化体积 步 反应机理将通过使用同位素标记来探测 苯酚，水，和 氧和监测的最终命运的标记功能 群组。//

Several technologies have been developed for the safe disposal of hazardous wastes. For dilute aqueous streams with moderate organic concentrations, oxidation in supercritical water (SCW) to innocuous compounds (such as carbon dioxide and water) has been shown to be effective. The overall objective of the PI's research is to elucidate the fundamental reaction pathways, kinetics, and mechanisms occurring during such oxidation in SCW and to understand fully the role and effect of the supercritical fluid in these reaction. An understanding of the fundamental physical and chemical phenomena operative during this process could lead to more efficient and economical process designs. In this phase of his work, the PI plans experimental studies on the conversion of some typical organic compounds (such as phenol and substituted phenol) present in waste streams. This equipment grant will provide the funds to purchase the components needed to construct a flow reactor. Flow reactors are well suited for experimental studies of such rapid exothermic reactions. Using the experimental results, the PI plans to deduce the reaction pathways and determine the relevant kinetics parameters such as the reaction order, rate constant, activation energy and activation volume for each reaction step. Reaction mechanisms will be probed by using isotopically tagged phenol, water, and oxygen and monitoring the ultimate fate of the tagged functional groups.//