Open AccessNovel micro‐reactor flow cell for investigation of model catalysts using in situ grazing‐incidence X‐ray scattering
Author(s) -
Kehres Jan,
Pedersen Thomas,
Masini Federico,
Andreasen Jens Wenzel,
Nielsen Martin Meedom,
Diaz Ana,
Nielsen Jane Hvolbæk,
Hansen Ole,
Chorkendorff Ib
Publication year - 2016
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577516001387
Subject(s) - grazing incidence small angle scattering , scattering , materials science , wide angle x ray scattering , synchrotron , small angle x ray scattering , optics , fabrication , inelastic scattering , small angle neutron scattering , physics , alternative medicine , neutron scattering , pathology , medicine , x ray raman scattering
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.