权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

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

工程研究设备补助金：用于超临界水氧化研究的流动反应器

基本信息

批准号：
8906860
负责人：
Phillip Savage
金额：
$ 2.41万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1989
资助国家：
美国
起止时间：
1989-05-15 至 1990-04-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906860&HistoricalAwards=false
关键词：
Engineering Research Equipment Grant Flow

项目摘要

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.//

已经开发了几种安全处置危险废物的技术。对于中等有机浓度的稀溶液，在超临界水(SCW)中氧化成无害的化合物(如二氧化碳和水)已被证明是有效的。PI研究的总体目标是阐明超临界水中这种氧化过程中发生的基本反应途径、动力学和机理，并充分了解超临界流体在这些反应中的作用和效果。对这一过程中运行的基本物理和化学现象的了解可以导致更有效和更经济的过程设计。在这一阶段的工作中，PI计划对废水中存在的一些典型有机化合物(如苯酚和取代苯酚)的转化进行实验研究。这笔设备赠款将提供资金，以购买建造流动反应堆所需的部件。流动反应器非常适合于这种快速放热反应的实验研究。利用实验结果，PI计划推断反应路径，并确定每个反应步骤的反应级数、速率常数、活化能和活化体积等相关动力学参数。将通过使用同位素标记的苯酚、水和氧并监测标记的官能团的最终命运来探讨反应机理。