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

Cite this

@article{e15083e52b954231a0680ef16e3d22b7,
title = "Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scattering",
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.",
keywords = "GISAXS, GIWAXS, in situ, micro-reactor",
author = "Jan Kehres and Thomas Pedersen and Federico Masini and Andreasen, {Jens Wenzel} and Nielsen, {Martin Meedom} and Ana Diaz and Nielsen, {Jane Hvolb{\ae}k} and Ole Hansen and Ib Chorkendorff",
year = "2016",
doi = "10.1107/S1600577516001387",
language = "English",
volume = "23",
pages = "455--463",
journal = "Journal of Synchrotron Radiation",
issn = "0909-0495",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scattering

AU - Kehres, Jan

AU - Pedersen, Thomas

AU - Masini, Federico

AU - Andreasen, Jens Wenzel

AU - Nielsen, Martin Meedom

AU - Diaz, Ana

AU - Nielsen, Jane Hvolbæk

AU - Hansen, Ole

AU - Chorkendorff, Ib

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - GISAXS

KW - GIWAXS

KW - in situ

KW - micro-reactor

U2 - 10.1107/S1600577516001387

DO - 10.1107/S1600577516001387

M3 - Journal article

C2 - 26917133

VL - 23

SP - 455

EP - 463

JO - Journal of Synchrotron Radiation

JF - Journal of Synchrotron Radiation

SN - 0909-0495

IS - 2

ER -