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Issue 24, 2009
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A thermodynamically stable layered double hydroxide heterostructure

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Abstract

A novel heterostructure was synthesised via the intercalation of 4-nitrophenolate (4-NP) into [LiAl2(OH)6]Cl·xH2O ([Li-Al-Cl]). Its interlayer spaces are alternatively occupied by 4-NP and chloride ions. The intercalate is structurally analogous to staging intermediates reported previously. However, data obtained from time-resolved in situ energy-dispersive X-ray powder diffraction clearly differentiate it from a reaction intermediate. The [Li-Al-Cl–4-NP] heterostructure is formed as a thermodynamically stable product when [Li-Al-Cl] is treated with a small excess of 4-NP over an extended period of time at elevated temperatures (above 70 °C). The heterostructural compound exhibits selective anion exchange when reacted with a range of organic and inorganic anions.

Graphical abstract: A thermodynamically stable layered double hydroxide heterostructure

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Publication details

The article was received on 15 Dec 2008, accepted on 06 Apr 2009 and first published on 15 May 2009


Article type: Paper
DOI: 10.1039/B822390D
Citation: J. Mater. Chem., 2009,19, 4211-4216
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    A thermodynamically stable layered double hydroxide heterostructure

    A. Ragavan, G. R. Williams and D. O'Hare, J. Mater. Chem., 2009, 19, 4211
    DOI: 10.1039/B822390D

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