Combining synchrotron light with laser technology in catalysis research
Artikel i vetenskaplig tidskrift, 2018

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 operandomeasurements of CO oxidation over Pd(100) are presented, allowing for an improved assignment of the correlation between sample structure and the CO2distribution above the sample surface with sub-second time resolution.

Pd(100).

CO oxidation

high-energy surface X-ray diffraction (HESXRD)

planar laser-induced fluorescence (PLIF)

Författare

Sara Blomberg

Lunds universitet

Johan Zetterberg

Lunds universitet

Johan Gustafson

Lunds universitet

Jianfeng Zhou

Lunds universitet

Mikhail Shipilin

Lunds universitet

Sebastian Pfaff

Lunds universitet

Uta Hejral

Lunds universitet

Per-Anders Carlsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Per-Anders Carlsson Group

Olof Gutowski

Deutsches Elektronen-Synchrotron (DESY)

Florian Bertram

Deutsches Elektronen-Synchrotron (DESY)

Edvin Lundgren

Lunds universitet

Journal of Synchrotron Radiation

0909-0495 (ISSN) 1600-5775 (eISSN)

Vol. 25 5 1389-1394

Tidsupplösta in situ metoder för design av katalytiska säten för hållbar kemi

Vetenskapsrådet (VR), 2013-01-01 -- 2016-12-31.

Ämneskategorier

Acceleratorfysik och instrumentering

Atom- och molekylfysik och optik

Materialkemi

Den kondenserade materiens fysik

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Energi

Materialvetenskap

DOI

10.1107/S1600577518010597

Mer information

Senast uppdaterat

2018-10-28