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Please use this identifier to cite or link to this item: http://purl.org/purl/2317

Title: Characterisation of the acid-base properties of pillared montmorillonites
Authors: Manju, Kurian
Sugunan, S
Keywords: Catalysis
Pillared clays
Surface acidity
Cumene cracking
Surface basicity
Cyclohexanol decomposition
Issue Date: 2005
Publisher: Elsevier
Abstract: Iron and mixed iron aluminium pillared montrnorillonites prepared by partial hydrolysis method were subjected to room temperature exchange with transition metals of the first series. The resulting materials were characterised by different spectroscopic techniques and surface area measurements. About 1-3% transition metals were incorporated into the porous network. The structural stability of the porous network was not affected by exchange. XRD and AI NMR spectroscopy evidenced the presence of iron substituted Al13 like polymers in FeAl pillared systems. Acidity and basicity benefited much as a result of metal exchange. Acidity and basicity were quantified by model reactions, viz., cumene cracking and cyclohexanol decomposition respectively. The presence of basic sites in otherwise acidic pillared clays, though diminutive in amount can be of much importance in acid base catalysed reactions.
URI: http://dyuthi.cusat.ac.in/purl/2317
Appears in Collections:Dr. Sugunan S

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