Influence of structural fluorine on the atomic vibrations of confined water in swelling clays
Swelling clay minerals (Hectorite) are layered alumino-silicates formed by two sheets of silica tetrahedra sandwiching a magnesium/lithium octahedral hydroxide sheet. In addition to isomorphic cation substitutions, hectorite layers may present anionic substitutions with fluorine replacing the structural hydroxyl groups resulting in the decrease of H2O molecules hydrating interlayer cations. This proposal aims at studying the anisotropy of the vibration modes of interlayer H2O molecules in both hydroxylated and fluorinated swelling clays. We propose to study the vibration modes of H2O molecules on the inelastic spectrometer Lagrange that will allow reaching the relevant excitation energies. The samples under investigation will be those previously studied by means of GCMC and X-ray diffraction experiments and which displayed a clear directional contrast. The time needed for such experiments is estimated to 5 days of beam time on Lagrange.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
JIMENEZ RUIZ Monica; DAZAS Baptiste; FERRAGE Eric; B. GREGOIRE; LANSON Bruno and MICHOT Laurent. (2017). Influence of structural fluorine on the atomic vibrations of confined water in swelling clays. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-04-147
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.