Combining synchrotron light with laser technology in catalysis research

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

High-energy surface X-ray diffraction (HESXRD) provides surface structural information with high temporal resolution, facilitating the understanding of the surface dynamics and structure of the active phase of catalytic surfaces. The surface structure detected during the reaction is sensitive to the composition of the gas phase close to the catalyst surface, and the catalytic activity of the sample itself may affect the surface structure, which in turn may complicate the assignment of the active phase. For this reason, planar laser-induced fluorescence (PLIF) and HESXRD have been combined during the oxidation of CO over a Pd(100) crystal. PLIF complements the structural studies with an instantaneous two-dimensional image of the CO2 gas phase in the vicinity of the active model catalyst. Here the combined HESXRD and PLIF operando measurements of CO oxidation over Pd(100) are presented, allowing for an improved assignment of the correlation between sample structure and the CO2 distribution above the sample surface with sub-second time resolution.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Chalmers University of Technology
  • German Electron Synchrotron (DESY)
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Fysik

Nyckelord

Originalspråkengelska
Sidor (från-till)1389-1394
Antal sidor6
TidskriftJournal of Synchrotron Radiation
Volym25
Utgivningsnummer5
StatusPublished - 2018
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

Zhou, J., 2018 okt 5, Lund: Department of Physics, Lund University. 278 s.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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