Skip to Main content Skip to Navigation
Theses

Application de la spectroscopie infrarouge à l'étude de l'organisation de l'eau aux interfaces : le cas des phyllosilicates 2:1

Abstract : Infrared spectroscopy was applied to study the first hydration states of several layer aluminosilicates. An home-made apparatus was built for in situ collecting of transmission infrared spectra on thin film samples placed in a temperature- and water vapor pressure-controlled sample chamber. For the first time, a systematic graphic decomposition of experimental spectra was carried out, and particularly in the range of water molecules bending vibration bands. From the decompositions, up to three water molecules families could be distinguished. Comparison of several smectites presenting different interlayer cations, and/or a different charge localisation, showed that organisation of adsorbed water molecules is influenced by the following parameters, by decreasing effect: 1. Polarizing effect of interlayer cations, 2. Hydrogen bonding and dissociation of water molecules, 3. Magnitude and localisation of the charges in the silicate layers. Layer surface had no effect on smectite mineral hydration, while some interactions may occur between water molecules and basal oxygens when the charge deficit is tetrahedrally located. Otherwise, the interlayer cation localisation can explain variations in octahedral hydroxyl vibrations. Furthermore, the results showed that numeric modeling implied it's necessary to take into account dissociation and flexibility of water molecules at interfaces.
Document type :
Theses
Complete list of metadata

https://hal.univ-lorraine.fr/tel-01749924
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 12:32:53 PM
Last modification on : Thursday, June 17, 2021 - 10:30:02 AM
Long-term archiving on: : Friday, September 14, 2018 - 9:42:37 PM

File

INPL_T_1999_PELLETIER_M.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01749924, version 1

Collections

Citation

Manuel Pelletier. Application de la spectroscopie infrarouge à l'étude de l'organisation de l'eau aux interfaces : le cas des phyllosilicates 2:1. Autre. Institut National Polytechnique de Lorraine, 1999. Français. ⟨NNT : 1999INPL063N⟩. ⟨tel-01749924⟩

Share

Metrics

Record views

72

Files downloads

103