Transient Infrared Study of Adsorbate in Hetergeneous Catalyst

摘要CTS-9421996 本文研究了一氧化氮催化还原过程中吸附物的反应性和动力学行为，以及硅烷与氧化铝和沸石的相互作用。 采用原位红外光谱结合瞬态动力学方法研究了一氧化氮和一氧化碳在铑基催化剂上反应以及一氧化氮、甲烷和氧气在含钴或铜的ZSM-5上反应过程中各种吸附物的位结构和动力学行为。 研究了硅烷与催化剂表面的相互作用以及硅烷处理催化剂上的反应。 评估了利用硅烷化来改善催化剂的抗烧结性的可行性。 本研究探索了一些新的催化剂评价和设计方法。 虽然这项工作着眼于用于控制来自移动的和固定源的氮氧化物的系统，但其结果将具有非常广泛的适用性。 ***

ABSTRACT CTS-9421996 This is a study of the reactivity and dynamic behavior of adsorbates appearing during the catalytic reduction of nitric oxide, and of the interaction of silanes with alumina and with zeolites. In -situ infrared spectroscopy coupled with transient kinetic approaches are used to study site structure and dynamic behavior of various adsorbates during the reaction of nitric oxide and carbon monoxide over rhodium-based catalysts, and during the reaction of nitric oxide, methane, and oxygen over ZSM-5 containing cobalt or copper. The interactions of silanes with catalyst surfaces and reactions on silane-treated catalysts are investigated. The feasibility of using silanation to improve the resistance of catalysts to sintering is assessed. Some novel approaches to catalyst assessment and design are explored in this study. Although this effort looks at systems used in control of nitrogen oxides from both mobile and stationary sources, the results will have very broad applicability. ***