SBIR Phase I: Improved Mixed Oxide Catalysts for Treatment of Offgas Removal of NOx

*9760050 Witteles小型企业创新研究第一阶段项目将开发一种铁/铬/锌/铜的混合氧化物和/或超晶格，作为一种选择性催化剂，用于销毁高温燃烧过程：MLLW、发电厂、工厂、汽车尾气中的NOx。这种改进的催化剂将取代用于固定应用的价格较高、效率较低的钒/二氧化钛催化剂，以及用于汽车的耐用、效率较低的沸石-铜催化剂。美国能源部从前苏联进口的这种催化剂，对MLLW等离子体弧工艺中废气NOx的破坏进行了评估，表明比Vadia/TiO2更有效。我们将通过使用我们专有的WIT-TIFIDTM沉积工艺及其优越的性能，为混合氧化物引入一种新的沉积工艺，从而提高催化剂的还原性能和效率。此外，我们还将研究用氧化物的超晶格结构取代混合氧化物以获得更均匀/均匀的涂层的可行性。‘我们将评估这两种结构的优缺点。在第二阶段期间，将生产混合氧化物和/或超级催化剂，并将进行实验室台架测试和评估。在第三阶段，我们将在MLLW、发电厂和汽车上测试我们的催化剂。通过提供一种更有效、更耐用、成本更低的选择性还原催化剂来销毁氮的氧化物，该计划中设定的目标的实现将推动低水平混合废物场地(MLLW)、固定污染物(发电厂和工厂)和移动污染物(汽车)的环境管理工作。氮氧化物是上述行业高温燃烧过程中产生的一种有害污染物。***

*** 9760050 Witteles The Small Business Innovative Research Phase I project will develop a mixed oxide and/or superlattice of iron/chromiun/zinc/copper as a selective catalyst for destruction of NOx, in offgas of high temperature combustion processes: MLLW, power plants, factories, automotive vehicles. This improved catalyst will replace more expensive, less efficient vanadia/titania catalysts used for stationary applications and less durable, less effective zeolitic-copper catalysts used in automotive vehicles. Such a catalyst, imported by DOE from the Former Soviet Union, evaluated for destruction of the offgas NOx in the Plasma Arc Process in MLLW, was shown to be more effective than vanadia/titania. We will improve the reduction properties and efficiency of the catalyst by introducing a novel deposition process for the mixed oxides through use of our proprietary WIT-TIFIDTM deposition process and its superior properties. In addition we will investigate the feasibility of replacing the mixed oxides with a superlattice structure of the oxides for a more homogeneous/uniform coating. 'Me advantages/disadvantages of the two structures will be evaluated. During Phase II mixed oxides and/or superiattice catalysts will be produced and a laboratory bench test will be tested and evaluated. During Phase III we will test our catalysts in MLLW, power plants and automotive vehicles. The accomplishment of the goals set in this program will advance the efforts on behalf of environmental management of mixed low level waste sites (MLLW), stationary pollutants (power plants and factories) and mobile pollutants (automotive vehicles), by providing for a more effective, more durable, less expensive selective reduction catalyst for the destruction of oxides of nitrogen, an objectionable pollutant produced in high temperature combustion processes in the above mentioned industries. ***