Prof.
Anatoly Frenkel
(Yeshiva University)
05/07/2012, 09:00
Materials / Nanomaterials
Invited oral contribution
In the last decade, there has been a surge in advancing synchrotron-based characterization methods to study catalytic materials. Most notable innovations include combining the X-ray absorption and scattering methods, and coupling of one or both of them to vibrational spectroscopies. I will report on recent developments at the Synchrotron Catalysis Consortium (SCC) at Brookhaven National...
Dr
Andrei Khodakov
(UCCS, CNRS, Université Lille 1, ENSCL, Ecole Centrale de Lille)
05/07/2012, 09:30
Catalysis
Oral contribution
Cobalt Fischer-Tropsch catalysts are typically prepared by impregnation, followed by calcination in oxidizing atmosphere and activation in hydrogen. Decomposition of cobalt nitrate is a crucial step in the genesis of active phase and could involve several short-living intermediate species. In the present work, in-situ quick X-ray absorption spectros-copy (QXAS) in combination with other...
Mr
Daniel Sippel
(Institut für organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg)
05/07/2012, 09:50
Catalysis
Oral contribution
The dissociation of the stable triple bond of atmospheric dinitrogen (N2) and the reduction to bioavailable ammonia (NH4+) is called nitrogen fixation. Biological nitrogen fixation is carried out by the nitrogenase1, an enzyme complex consisting under turnover condition of two metallo proteins, the MoFe- and the Fe-protein2. Nitrogen reduction takes place at the MoFe-protein, whereas the...
Dr
Maarten Nachtegaal
(PSI)
05/07/2012, 10:10
Catalysis
Oral contribution
The directed development of new catalysts necessitates an understanding of the structure - performance relation. Two continuous developments at the SuperXAS beam line of the Swiss Light Source, sub second XAS and XES, allow determining the dynamic electronic and geometric structures of catalysts under in situ conditions. When combined with a quadrupole mass spectrometer or gas chromatograph,...
