ETUDE INFRAROUGE DES VIBRATIONS DE VALENCE

ET DE DEFORMATION OH DE L’EAU DE CONSTITUTION

DE LA PALYGORSKITE DU MOYEN-ATLAS, MAROC

E. M. EL Faleh1*, M. El Amane2, M. L. Mahdoudi1

1Laboratoire de Géologie de Surface et Environnement, Faculté des Sciences, B.P. 4010, Beni M’Hamed, Meknès-Maroc

2 Laboratoire de Chimie Minérale Appliquée,

Faculté des Sciences, B.P. 4010, Beni M’Hamed, Meknès-Maroc.

* Corresponding author. E-mail : elfaleh@fsmek.ac.ma

Received 20 November 2000, revised version accepted 23 April 2001

 

Abstract

This work deals with the infrared spectroscopic study of the palygorskite coming from the Middle-Atlas (Morocco). The analysis of the infrared spectra carried out with samples taken under normal conditions or vacuum precondition with isotopic exchange H/D at various temperatures was undertaken.

This study made it possible to assign the stretching and deformation OH of constituted water in this palygorskite. In complement of the infrared data of the literature, it was possible to determine the isotope shifts of the bands corresponding to the hydrated and zeolitic water.

Keywords : Palygorskite; Infrared; Heat treatment; Isotopic exchange H/D; Constituted water; Structural hydroxyls; Middle-Atlas.

© 2015