Montmorillonite
incorporated with magnesium oxide |
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| Authors: | Vera L P Soares L N Batista Rosane A S San Gil |
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| Institution: | 1.Departamento de Química Organica,
Instituto de Química,Universidade Federal do
Rio de Janeiro,Rio de Janeiro,Brazil |
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| Abstract: | MgO was
incorporated into montmorillonite (MMT) though the controlled formation of
Mg(OH)2 followed by calcination. The evidence for Mg2+
in MMT before calcination was concluded from TG curves where two different
temperature ranges for Mg(OH)2 dehydroxylation suggested that the location
of Mg2+ at its internal and external surfaces.
FTIR by diffuse reflectance technique of calcined sample showed a typical
MgO band. XRD indicated a decrease in structural order and no collapse of
clay structure. The organic compounds adsorption to MMT modified with MgO
as suggested by increased degradation temperatures occurred at internal and
external clay surfaces besides in an area formed probably by MgO and MMT layers. |
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| Keywords: | infrared analysis magnesium oxide montmorillonite organic compound adsorption thermogravimetry XRD |
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