NOX Reduction Properties of Chromia-doped Tin Oxide and Pla-tinized, Chromia-doped Tin Oxide

本研究试图通过X射线光电子能谱、俄歇电子能谱、电子诱导脱附和紫外光电子能谱等手段对镀铂前后掺铬氧化锡的电子结构、组成和几何结构进行研究。最近关于掺铬氧化锡的研究表明，这种材料有望用于氮氧化物的处理。这些实验包括动态测量，这是现代催化剂研究中最有前途的技术。一种改进的系统已经被开发出来，用于使用一种被称为俄歇光谱的成熟的分析技术。新的系统提供了比过去更有意义的结果，这项技术确定了表面上存在的化合物的种类和数量。改进后的方法还允许分析更敏感的表面，这些表面到目前为止还不受俄歇方法的影响。

This study attempts to elucidate the properties of chromia-doped tin oxide before and after platinization by probing electronic structure, composition, and geometrical structure using x-ray photoelectron spectroscopy, Auger electron spectroscopy, electron stimulated desorption, and ultraviolet photoelectron spectroscopy. Recent work on chromia-doped tin oxide shows that this material holds promise for treatment of nitrogen oxides. These experiments involve ;itin situ;ro dynamic measurements, the most promising technique for modern catalyst studies. An improved system has been developed for use of an established analytical technique known as Auger spectroscopy. The new system allows more meaningful results than have been possible in the past from this technique which determines kind and amount of compounds present on surfaces. The improved method also allows more sensitive surfaces, not hitherto susceptible to the Auger method, to be analyzed.