Structure analysis of supported disordered molybdenum oxides using pair distribution function analysis and automated cluster modelling.

ABSTRACT: Molybdenum oxides and sulfides on various low-cost high-surface-area supports are excellent catalysts for several industrially relevant reactions. The surface layer structure of these materials is, however, difficult to characterize due to small and disordered MoO _x domains. Here, it is shown how X-ray total scattering can be applied to gain insights into the structure through differential pair distribution function (d-PDF) analysis, where the scattering signal from the support material is subtracted to obtain structural information on the supported structure. MoO _x catalysts supported on alumina nanoparticles and on zeolites are investigated, and it is shown that the structure of the hydrated molybdenum oxide layer is closely related to that of disorder

SUBMITTER: Lindahl Christiansen T 

PROVIDER: S-EPMC6998784 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature