Engineering Research Equipment: Sample Introduction Chamberfor Photoelectron Spectroscopy

在现有的光电子光谱仪上增加了一个样品制备和转移室。该设备将用于研究由氧化物衬底上的薄膜组成的催化剂。在各种氧化物上的金属薄膜将被用来检查吸附后金属的电子水平的变化，并确定金属催化剂在不同载体上性能差异的原因。在其他氧化物上的氧化薄膜将被检查，以确定在混合氧化物、酸性催化剂上形成的中间体的性质。这些系统是广泛用于生产化学品和石油精炼的催化剂类别的简化模型。更好地理解其行为所涉及的能量学是设计新催化剂的重要一步。

A chamber for sample preparation and transfer is being added to an existing photoelectron spectrometer. This equipment will be used to study catalysts consisting of thin films on oxide substrates. Thin metal films on various oxides will be used to examine changes in the electronic levels of the metal following adsorption and to determine reasons for differences in the properties of metal catalysts on different supports. Thin oxide films on other oxides will be examined to determine the nature of intermediates formed on mixed-oxide, acid catalysts. These systems are simplified models of classes of catalysts widely used in both production chemicals and refining of petroleum. Better understanding of the energetics involved in their behavior is an important step toward designing new catalysts.