Solution decomposition of the layered double hydroxide (LDH) of Zn with Al

Britto, Sylvia and Radha, AV and Ravishankar, N and Kamath, Vishnu P (2007) Solution decomposition of the layered double hydroxide (LDH) of Zn with Al. In: Solid State Sciences, 9 (3-4). pp. 279-286.

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Abstract

The layered double hydroxides (LDH) of Zn with Al containing intercalated $CO_3 ^{2-}$ and $NO_3^-$ ions undergo solution decomposition to yield a highly crystalline oxide mixture comprising ZnO and $ZnAl_2O_4$ at temperatures as low as $150-180 ^oC$ under hydrothermal conditions. In contrast solid-state decomposition takes place at a much higher temperature $(240-315 ^oC)$ in air. Solution decomposition is not only guided by the low octahedral crystal field stabilization energy of $Zn^{2+}$ ions, a factor that also affects solid-state decomposition, but also by solubility considerations. The LDHs of Mg and Ni with Al do not undergo solution decomposition.

Item Type:	Journal Article
Publication:	Solid State Sciences
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Layered double hydroxide;Solution decomposition
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	27 Aug 2007
Last Modified:	19 Sep 2010 04:39
URI:	http://eprints.iisc.ac.in/id/eprint/11777

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