Characterisation of the acid-base properties of pillared montmorillonites

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Characterisation of the acid-base properties of pillared montmorillonites

Show simple item record Manju, Kurian Sugunan, S 2011-10-01T04:44:48Z 2011-10-01T04:44:48Z 2005
dc.description.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. en_US
dc.description.sponsorship Cochin University of Science and Technology en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Catalysis en_US
dc.subject Pillared clays en_US
dc.subject Surface acidity en_US
dc.subject Cumene cracking en_US
dc.subject Surface basicity en_US
dc.subject Cyclohexanol decomposition en_US
dc.title Characterisation of the acid-base properties of pillared montmorillonites en_US
dc.type Working Paper en_US
dc.contributor.faculty Science en_US

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