TITLE:
FT-IR Spectroscopy Applied for Surface Clays Characterization
AUTHORS:
Paul Djomgoue, Daniel Njopwouo
KEYWORDS:
Clay Materials; Surface Clays; Hydroxyls; Surface Acidity; IR Spectroscopy
JOURNAL NAME:
Journal of Surface Engineered Materials and Advanced Technology,
Vol.3 No.4,
October
21,
2013
ABSTRACT: The present paper should be considered
as a review of the
application of Fourier Transform Infra-Red for surface clay characterization. The
application of surface clay materials for water treatment, oil adsorption, excipients
or as active in drugs has largely increased these recent years. The surface clay material presents
hydroxyl groups, which can link very easily water molecules. These hydroxyl groups
can react with organic groups and by their vibration in the infra-red region, FT-IR can be easily used as a technical
method for surface clay characterization. In this paper, we focus on the determination of Lewis
and Bronsted acid sites on the clay surface, a critical review of the sample preparation, the surface characterization of bulk clay and
the modified surface clay samples using FT-IR spectroscopy.