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A composite of layered double hydroxides obtained through random costacking of layers from Mg-Al and Co-Al LDHs by delamination-restacking: Thermal decomposition and reconstruction behavior

Venugopal, BR and Shivakumara, C and Rajamathi, Michael (2007) A composite of layered double hydroxides obtained through random costacking of layers from Mg-Al and Co-Al LDHs by delamination-restacking: Thermal decomposition and reconstruction behavior. In: Solid State Sciences, 9 (3-4). pp. 287-294.

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Abstract

A composite of dodecylsulfate intercalated Mg-Al and Co-Al LDHs in which the layers of the two LDHs are randomly costacked was prepared starting from the monolayer colloidal dispersions of the individual surfactant intercalated LDHs obtained through delamination in 1-butanol. The surfactant ion of the composite could be exchanged for acetate ions. The thermal decomposition and reconstruction behavior of the acetate-intercalated composite was found to be different from those of an LDH in which each layer contains Mg, Co and Al and a physical mixture of Mg-Al and Co-Al LDHs. While the composite shows partial reconstruction to LDH phase even after heating up to $1000 ^oC$ the other samples do not show reconstruction beyond $800 ^oC$.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Layered double hydroxides;Delamination;Layered composites;Thermal decomposition;Reconstruction
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 27 Aug 2007
Last Modified: 19 Sep 2010 04:39
URI: http://eprints.iisc.ernet.in/id/eprint/11778

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