Combining synchrotron light with laser technology in catalysis research
Journal article, 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)

Author

Sara Blomberg

Lund University

Johan Zetterberg

Lund University

Johan Gustafson

Lund University

Jianfeng Zhou

Lund University

Mikhail Shipilin

Lund University

Sebastian Pfaff

Lund University

Uta Hejral

Lund University

Per-Anders Carlsson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Per-Anders Carlsson Group

Olof Gutowski

Deutsches Elektronen-Synchrotron (DESY)

Florian Bertram

Deutsches Elektronen-Synchrotron (DESY)

Edvin Lundgren

Lund University

Journal of Synchrotron Radiation

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

Vol. 25 5 1389-1394

Time-resolved in situ methods for design of catalytic sites within sustainable chemistry

Swedish Research Council (VR), 2013-01-01 -- 2016-12-31.

Subject Categories

Accelerator Physics and Instrumentation

Atom and Molecular Physics and Optics

Materials Chemistry

Condensed Matter Physics

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Materials Science

DOI

10.1107/S1600577518010597

More information

Latest update

10/28/2018