Reactor for nano-focused x-ray diffraction and imaging under catalytic in situ conditions

M.I. Richard, S. Fernández, J.P. Hofmann, L. Gao, S.J. Leake, H. Djazouli, Y. De Bortoli, L. Petit, P. Boesecke, S. Labat, E.J.M. Hensen, O. Thomas, T. Schülli

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Abstract

A reactor cell for in situ studies of individual catalyst nanoparticles or surfaces by nano-focused (coherent) x-ray diffraction has been developed. Catalytic reactions can be studied in flow mode in a pressure range of 10-2-103 mbar and temperatures up to 900 °C. This instrument bridges the pressure and materials gap at the same time within one experimental setup. It allows us to probe in situ the structure (e.g., shape, size, strain, faceting, composition, and defects) of individual nanoparticles using a nano-focused x-ray beam. Here, the setup was used to observe strain and facet evolution of individual model Pt catalysts during in situ experiments. It can be used for heating other (non-catalytically active) nanoparticles (e.g., nanowires) in inert or reactive gas atmospheres or vacuum as well.

Original languageEnglish
Article number093902
Number of pages5
JournalReview of Scientific Instruments
Volume88
Issue number9
DOIs
Publication statusPublished - 1 Sep 2017

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