Water-silica gel interactions, X-ray diffraction study at room and low temperature.
X-ray diffraction experiments on water confined in silica gel powder hydrated at about 20% are presented and analyzed at room temperature and down to 77 K. The structural modification of confined water observed at second neighbors is due to the competition between the confinement effect and the water-silica interaction.
Laboratoire de Physico-Chimie structurale, Département de Physique, Faculté des Sciences de Monastir, 5019 Monastir, Tunisia. afif.fouzri@fsm.rnu.tn
Afif
A
Fouzri
Rachida
R
Dorbez-Sridi
Salah
S
Nasr
Mohamed
M
Oumezzine
D003080:Cold Temperature; D008958:Models, Molecular; D015394:Molecular Structure; D058428:Silica Gel; D012822:Silicon Dioxide / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction / Q000379:methods*
D014867:Water; D058428:Silica Gel; D012822:Silicon Dioxide