Scanning Tunnelling Microscopy of Platinum Single Crystals and Platinum Supported Cataysts

在这项研究中，扫描隧道显微镜（STM）用于 结合X射线光电子能谱监测 铂单晶和模型石墨的表面- 负载型铂催化剂， 处理，包括使用样品作为催化剂， 环己烯芳构化 几个晶面是 研究，包括一些低和一些高米勒 指数。 单晶研究与模型进行了比较 催化剂研究，以确定STM扫描的哪些特征 与催化性能有关。 这基本上是一个基线研究，以建立可靠性 STM在催化研究中的应用指南。 在 原则上，这种相对较新的技术具有很大的潜力 为了揭示迄今为止反应体系中的表面特征 不可能被发现。

In this study, scanning tunnelling microscopy (STM) is used in conjunction with X-ray photoelectron spectroscopy to monitor the surfaces of platinum single crystals and model graphite- supported platinum catalysts following a variety of treatments, including use of the samples as catalysts for cyclohexene aromatization. Several crystal planes are studied, including some with low and some with high Miller indices. Single-crystal studies are compared with model catalyst studies to ascertain which features of the STM scans are relevant to catalytic performance. This is essentially a baseline study to establish reliability guidelines for application of STM in catalysis research. In principle, this relatively new technique has great potential to reveal surface features in reacting systems heretofore impossible to detect.