6533b854fe1ef96bd12aeab8
RESEARCH PRODUCT
Effect of heating of organo-montmorillonites under different atmospheres
Maria Chiara MistrettaF. P. La MantiaRoberto ScaffaroAlberto Frachesubject
Organic modifierInorganic chemistryOxygenechemistry.chemical_elementGeologyOxygenNitrogenDecompositionSilicatechemistry.chemical_compoundDegradationMontmorillonitechemistryGeochemistry and PetrologyOxidationDegradation (geology)Particlecomputercomputer.programming_languageMontmorillonitedescription
Abstract We studied the influence of heating on the behaviour of two organo-montmorillonites paying particular attention to the possible degradation effects of the organic modifier under different atmospheres. Hoffmann elimination and anucleophilic substitution on the nitrogen led to rapid degradation of the modifier. As confirmed by deconvoluted FTIR spectra, the presence of oxygen accelerated the degradation rate. The degradation products of the modifier (α-olefins transforming into various carboxyl compounds if oxygen is present) initially increased the basal spacing, followed by a collapse of the particle layers when the decomposition products migrated toward the surface and eventually volatilized.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-08-01 |