SBIR Phase II: Exhaustive Oxidation of Indoor Air Contaminants via an Ozonated, UV Irradiated Fluorocarbon/TiO2 Dispersions

这项SBIR第二阶段奖是为了开发一种商业上可行的增强工艺，用于彻底氧化空气污染物。这一过程涉及臭氧氧化。指对臭氧具有极高的溶解度的碳氟化合物流体。氟碳化合物具有完全的抗氧化性和生物惰性，其对气体的高度溶解性使其能够在成千上万的外科手术中用作人造血液替代品。碳氟化合物已经显示出优先从气流中提取各种气态和液态碳氢化合物和氯碳污染物的能力。它具有低粘度和更低的挥发性，同时相对于所有碳氢化合物溶剂而言，它是一种更好的气体污染物溶剂。该流体是氧化反应的极佳介质，本身不会造成污染风险。出于这样的原因，它以前曾被用于二氧化钛粒子的分散体，用于紫外线(UV)催化的空气污染物的光氧化。在我们的第一阶段工作中，由于聚集在二氧化钛颗粒固/液界面的空气污染物及其中间氧化产物无法逃逸，因此实现了彻底的氧化。中间氧化产物本身在固/液界面上物理吸附，直到完全氧化成二氧化碳。拟议的原型具有显著的潜力，可以将空气污染物的氧化增加一个数量级。拟议流程的目标市场包括医院、疗养院、酒店、写字楼、购物中心和餐厅。从本质上讲，市场是对人类居住的任何建筑的室内空气进行处理。

This SBIR Phase II award is to develop a commercially viable enhanced process for the exhaustive oxidation of air contaminants. The process involves ozonation. of a fluorocarbon fluid possessing extremely high solubility for ozone. The fluorocarbon is completely oxidation resistance and biologically inert and its high solubility for gases has allowed its use as a artificial blood substitute in thousands of surgical operations. The fluorocarbon has demonstrated the preferential ability to extract a variety of both gaseous and liquid hydrocarbon and chlorocarbon contaminants from air streams. It has a low viscosity and an even lower volatility while being a superior solvent for gaseous contaminants relative to all hydrocarbon solvents. The fluid is an excellent medium for oxidation reactions and poses no contamination risk itself. For such reasons it has been previously used with dispersions of TiO2 particles for the ultraviolet (UV) catalyzed photooxidation of air contaminants. Exhaustive oxidation was achieved in our phase I effort due to the air contaminants collecting at the solid/liquid interface of the TiO2 particles and their intermediate oxidation products being unable to escape. The intermediate oxidation products themselves physically adsorbed at the solid/liquid interface until completely oxidized to C02. The proposed prototype has significant potential to increased oxidation of air contaminants by an order of magnitude. The target markets for the proposed process are hospitals, nursing homes, hotels, office buildings, shopping malls and restaurants mention a few. Essentially the market is the treatment of indoor air of any structure occupied by humans.