Manju, Kurian; Dr.Prathapan, S; Dr.Sugunan, S(Cochin University Of Science And Technology, February 15, 2004)
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Abstract:
The present work is oriented to obtain a comparative evaluation of the
physicochemical properties and catalytic activities of iron, aluminium and iron aluminium
mixed pillared montmorillonites and their transition metal exchanged analogues.
Reactions of industrial importance like Friedel Crafts alkylations, catalytic wet peroxide
oxidation of phenol and MTBE synthesis have been selected for the present study. The
thesis is structured into seven chapters. First chapter deals with a brief introduction and
literature survey on pillared clays. Second chapter explains the materials and methods
employed in the work. Results and discussions on the characterisation techniques are
described in the third chapter. The subsequent three chapters describe the catalytic
activities of pillared clays in the industrially important reactions. Last chapter comprises
the summary of the investigations and the conclusions drawn from the earlier chapters
Description:
Department of Applied Chemistry
Cochin University of Science and Technology
Rahna,K Shamsudeen; Dr.Sugunan, S(Cochin University of Science & Technology, December , 2001)
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Abstract:
In the present study, we have prepared and evaluated the physical and
chemical properties and catalytic activities of various single, mixed and modified
pillared montmorillonites. The single oxide pillared clays include AI-, Fe- and Cr-pillared
montmorillonites. The mixed oxide pillared montmorillonites such as Fe-AI
and Cr-AI pillared systems with various Fe(Cr)/Al ratios are also prepared.
Modification of iron-pillared system is done by vanadia impregnation.
Characterisation using various physico-chemical techniques and a detailed study of
acidic properties are also carried out. Major part of our work is oriented to evaluate
the catalytic activity of the pillared systems towards certain important catalytic
reactions. Our samples are found to be excellent catalysts for the reactions namely
Friedel-Crafts benzylation and benzoylation, methylation of aniline and catalytic wet
peroxide oxidation of phenol.
Description:
Department of Applied Chemistry,
Cochin University of Science and Technology