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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 2
BKCSDE 26(2)
February 20, 2005 

Step-wise Anion-Exchange in Layered Double Hydroxide Using Solvothermal Treatment
Jong Hyeon Lee, Seog Woo Rhee, Duk-Young Jung*
Layered double hydroxides, Solvothermal, Anion exchange, Dicarboxylic acids
Synthetic layered double hydroxides (LDHs), [Mg4Al2(OH)12]CO3·nH2O, were prepared in the submicron size of plate-like polycrystals. Anion-exchange reactions with various linear dicarboxylic acids were performed to produce LDH/organic hybrid materials by solvothermal treatment in toluene. X-ray powder diffraction spectra for the products indicated that the interlayer spacings of LDHs remarkably changed, up to 20 A when 1,10- decanedicarboxylic acid anions were intercalated as an organic guest. Dicarboxylates-LDHs samples could be also re-exchanged consecutively with other dicarboxylic acids or carbonate without serious destruction of layer structure under the scanning electron microscopic observation.
248 - 252
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