In this work, recent applications of XPS for the dispersion measurements of oxidic supports and metal catalysts were discussed. The most frequently used models, those of Kerkhof–Moulijn and Davis, were selected to give an overview of several applications in the study of catalysts, based on noble (Pd, Au, Ag, and Rh) and non-noble metals (Co, Ni). In the case of the dispersion of different promoters on the surface of oxidic supports, the Kerkhof–Moulijn model was often applied. Good correlations were achieved for high surface area Al₂O₃ supports modified by La, B and W. This model was also applied to analyze the dispersion of Co, Ni, Pd and Rh on oxidic supports, making it possible to propose the limit of monolayer formation for homogeneously distributed metal particles. The Davis model was developed for the estimation of metal particle sizes. This method considered the morphology of the metal particles and assumed a diamond-shaped support. The XPS results combined with the information obtained through other techniques showed the potential application of this model in the determination of metal particle sizes for Rh, Au, Pd and Ni based catalysts.

在这项工作中，讨论了XPS在氧化载体和金属催化剂的分散测量中的最新应用。选择了最常用的模型，即Kerkhof–Moulijn和Davis的模型，概述了基于贵金属（Pd，Au，Ag和Rh）和非贵金属（Co，你）。对于不同促进剂在氧化载体表面的分散情况，通常采用Kerkhof-Moulijn模型。高表面积的Al ₂ O ₃获得了良好的相关性该模型还用于分析Co，Ni，Pd和Rh在氧化载体上的分散性，从而有可能提出均匀分布的金属颗粒的单层形成极限。戴维斯（Davis）模型是为估算金属粒径而开发的。该方法考虑了金属颗粒的形态，并假定为菱形载体。XPS结果与通过其他技术获得的信息相结合，表明该模型在确定Rh，Au，Pd和Ni基催化剂的金属粒度方面的潜在应用。