Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scattering

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Abstract

The design, fabrication and performance of a novel and highly sensitive micro-reactor device for performing in situ grazing-incidence X-ray scattering experiments of model catalyst systems is presented. The design of the reaction chamber, etched in silicon on insulator (SIO), permits grazing-incidence small-angle X-ray scattering (GISAXS) in transmission through 10 µm-thick entrance and exit windows by using micro-focused beams. An additional thinning of the Pyrex glass reactor lid allows simultaneous acquisition of the grazing-incidence wide-angle X-ray scattering (GIWAXS). In situ experiments at synchrotron facilities are performed utilizing the micro-reactor and a designed transportable gas feed and analysis system. The feasibility of simultaneous in situ GISAXS/GIWAXS experiments in the novel micro-reactor flow cell was confirmed with CO oxidation over mass-selected Ru nanoparticles.
Original languageEnglish
JournalJournal of Synchrotron Radiation
Volume23
Issue number2
Pages (from-to)455-463
Number of pages9
ISSN0909-0495
DOIs
Publication statusPublished - 2016

Keywords

  • GISAXS
  • GIWAXS
  • in situ
  • micro-reactor

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