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SUMMARY:Structural studies of complex hydrides
DTSTART:20161128T110000
DTEND:20161128T120000
DTSTAMP:20260501T133555Z
UID:db732102e4897ee07d53b785938ee905121fa2dfbe987a803a591bee
CATEGORIES:Conferences - Seminars
DESCRIPTION:Bjørn C. Hauback\, Physics Department\, Institute for Energy 
 Technology (IFE)\, Kjeller\, Norway\nDetailed knowledge about the position
 s of the atoms is of major importance both for development of new compound
 s and for understanding of their properties. Neutron diffraction is a uniq
 ue tool for studies of metal hydrides since it is the only method to deter
 mine the positions of the hydrogen/deuterium atoms in the crystal structur
 es. The use of deuterium is crucial due to the challenge with incoherent s
 cattering with normal hydrogen (protium). For studies of boron-based compo
 unds\, borohydrides\, the 11B isotope has to be used because of the strong
  absorption of neutrons in normal boron (mainly 10B). Most of our powder n
 eutron diffraction (PND) experiments are performed with the high-resolutio
 n powder diffractometer PUS at the JEEP II reactor at IFE.\n\nThe combinat
 ion of PND and X-ray diffraction is often important. In order to solve com
 plicated structural features and to perform in-situ experiments\, access t
 o synchrotron radiation powder X-ray diffraction (SR-PXD) is crucial. SR-P
 XD is in particular important for detailed studies of crystalline phases d
 uring hydrogen absorption and desorption. Effects of additives are investi
 gated by combined EXAFS/XANS and SR-PXD experiments. Our SR-PXD experiment
 s are performed at the Swiss-Norwegian Beamlines (SNBL) at the ESRF\, Gren
 oble\, France.\n\nSelected detailed structural studies and in-situ sorptio
 n diffraction experiments will be presented. The presentation will address
  recent studies of borohydrides and other complex hydrides. Selected examp
 les of novel compounds\, efforts to understand hydrogenation/dehydrogenati
 on properties including effect of selected additives\, will be described. 
 The combination of neutron and synchrotron radiation X-ray scattering is i
 n particular important and will be emphasized.\nThe Research Council of No
 rway\, EU FP7 projects FLYHY\, BOR4STORE and ECOSTORE are acknowledged for
  financial support.\n 
LOCATION:Zeuzier conference room\, EPFL Valais
STATUS:CONFIRMED
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