本文着重讨论了铂催化剂上三类吸氢中心的来源以及它们与催化剂表面性质间的关系。研究表明,α和β两类吸附是铂固有吸附特征的体现,分别发生在铂簇团的表层及内层缺陷上,这两类吸附的变化充分反映了铂簇团的结构特征的变化;γ氢吸附主要来源于氢的溢流行为,此类吸附与载体的酸性密切相关,并且它的可逆和不可逆吸附分别与B酸和L酸之间呈一定的关系,在一定程度上揭示了氢溢流的本质。文中对于这些现象进行了详细的论述。 This article focuses on the sources of the three types of hydrogen absorption centers on platinum catalysts and their relationship to the surface properties of the catalyst. The results show that both α and β adsorption are the intrinsic adsorption characteristics of platinum, which occur on the surface and inner defects of platinum clusters, respectively. The changes of these two kinds of adsorption fully reflect the changes of the structural characteristics of platinum clusters. Γ Hydrogen adsorption mainly comes from the overflow behavior of hydrogen. Such adsorption is closely related to the acidity of the support, and its reversible and irreversible adsorption has a certain relationship with B acid and L acid, respectively, to a certain extent, The essence of flow. The article discusses these phenomena in detail.