Room Temperature and Atmospheric Pressure Dioxygen Activation for the Deep Oxidation of Organic Wastes (TSE03-O)

常温常压双氧活化用于有机废物深度氧化（TSE03-O）

• 批准号: 0328827
• 负责人: I Cheng
• 金额: $ 10万
• 依托单位: Regents of the University of Idaho
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-11-01 至 2006-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0328827&HistoricalAwards=false
• 关键词: Room; Temperature; Atmospheric; Pressure; Dioxygen

0328827 Cheng (1) Intellectual merit of the proposed activityThe aim of this investigation is to use dioxygen from air as the oxidizing agent for the destruction of organic pollutants and their surrogates under mild reaction conditions. We have recently discovered a method for the aqueous, room temperature, and atmospheric pressure of dioxygen from air. Such scheme is remarkable in that only air, water, iron particles, and a suitable iron chelation agent are required (Fe(0)/EDTA/O2). No expensive precious metal catalysts are used in the process. This process is a rare instance of abiotic dioxygen activation at room temperature. To our knowledge this is the only instance in which complete degradation of chlorinated organics compounds proceeds with dioxygen as the ultimate oxidant under such mild reaction conditions. We have recently demonstrated this system's oxidizing capabilities on a variety of surrogates including 4-chlorophenol, pentachlorophenol, phenol, nitrobenzene, and malathion. In all cases the starting compounds were degraded into simpler non-toxic carboxylic acids, and carbon dioxide. In this study we intend to examine the mechanism by which this system is able to generate kinetically facile oxidizing species from O2, a study of the reaction pathways through an elemental balance of the products, a survey of the oxidizing capabilities of this system. In terms of a study with both scientific and technical aspects, kinetic studies of the process are also proposed. Variables such as Fe(0) dissolution rate, O2 demand, and EDTA concentration are of interest with the eventual goal of increasing reaction kinetics.(2) Broader impacts resulting from the proposed activity.There is a significant interest in the discovery of a method for the destruction of organic pollutants under mild reaction conditions with inexpensive reagents. The Fe(0)/EDTA/O2 process fulfills these criteria. Ultimately, it is hoped that this system will lead to the development of field portable organic pollutant destruction schemes that can be rapidly commercialized and used by non-specialized personnel. The Fe(0)/EDTA/O2 process has a strong possibility for scale-up since there are no specialized catalysts or reagents required to activate dioxygen.

0328827 Cheng (1) 拟议活动的智力价值本研究的目的是利用空气中的分子氧作为氧化剂，在温和的反应条件下破坏有机污染物及其替代物。我们最近发现了一种在室温和大气压下从空气中提取分子氧的方法。该方案的显着之处在于仅需要空气、水、铁颗粒和合适的铁螯合剂（Fe(0)/EDTA/O2）。该过程中不使用昂贵的贵金属催化剂。这个过程是室温下非生物双氧活化的罕见实例。据我们所知，这是在如此温和的反应条件下以分子氧作为最终氧化剂实现氯化有机化合物完全降解的唯一实例。我们最近证明了该系统对多种替代物的氧化能力，包括 4-氯苯酚、五氯苯酚、苯酚、硝基苯和马拉硫磷。在所有情况下，起始化合物都降解为更简单的无毒羧酸和二氧化碳。在这项研究中，我们打算研究该系统能够从 O2 生成动力学上容易的氧化物质的机制，通过产物的元素平衡研究反应路径，调查该系统的氧化能力。在科学和技术方面的研究方面，还提出了该过程的动力学研究。 Fe(0) 溶解速率、O2 需求和 EDTA 浓度等变量与提高反应动力学的最终目标有关。(2) 拟议活动产生更广泛的影响。人们对发现一种在温和反应条件下使用廉价试剂破坏有机污染物的方法非常感兴趣。 Fe(0)/EDTA/O2 工艺满足这些标准。最终，希望该系统将导致现场便携式有机污染物销毁方案的开发，该方案可以快速商业化并由非专业人员使用。 Fe(0)/EDTA/O2 工艺具有很大的扩大规模的可能性，因为不需要专门的催化剂或试剂来活化分子氧。