An LiAl–layered double hydroxide (LiAl–LDH) was synthesized by autoclaving an aqueous solution of LiCl and AlCl3 with urea at 100–160 °C. Chemical and structural analyses show the resulting powder to be pure and well-crystallized LiAl2(OH)6(CO3)0.5·yH2O (1 < y < 2). X-ray powder diffrac- tion reveals an apparent monoclinic C2/m symmetry and the presence of disorder in the arrangement of the layers. A detailed study of the reaction is also proposed, demonstrating that the LiAl–LDH does not form by homogeneous precipitation, but is the result of a one-pot imbibition of the Al(OH)3 gel precursor by Li2CO3, favored by an increase in the pH.
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Titolo: | Well-Crystallized CO32- -Type LiAl-LDH from Urea Hydrolysis of an Aqueous Chloride Solution |
Autori: | H., Kang; Leoni, Matteo; H., He; G., Huang; X., Yang |
Autori Unitn: | |
Titolo del periodico: | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY |
Anno di pubblicazione: | 2012 |
Numero e parte del fascicolo: | 24 |
Codice identificativo Scopus: | 2-s2.0-84865006379 |
Codice identificativo ISI: | WOS:000307727100007 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/ejic.201200174 |
Handle: | http://hdl.handle.net/11572/94443 |
Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |