In situ neutron diffraction under high pressure - Providing an insight into working catalysts

Timur Kandemir, Dirk Wallacher, Thomas Hansen, Klaus Dieter Liss, Raoul Naumann Dalnoncourt, Robert Schlögl, Malte Behrens*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In the present work the construction and application of a continuous flow cell is presented, from which neutron diffraction data could be obtained during catalytic reactions at high pressure. By coupling an online gas detection system, parallel structure and activity investigations of working catalysts under industrial relevant conditions are possible. The flow cell can be operated with different feed gases in a wide range from room temperature to 603 K. Pressures from ambient up to 6 MPa are applicable. An exchangeable sample positioning system makes the flow cell suitable for several different goniomter types on a variety of instrument beam lines. Complementary operational test measurements were carried out monitoring reduction of and methanol synthesis over a Cu/ZnO/Al 2O 3 catalyst at the high-flux powder diffraction beamline D1B at ILL and high-resolution diffraction beamline Echidna at ANSTO.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume673
DOIs
StatePublished - 1 May 2012
Externally publishedYes

Keywords

  • Heterogeneous catalysis
  • High-pressure sample environment
  • In situ characterization
  • Structureactivity correlation

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