Artículo
One Pot Epoxide-Driven Synthesis of M2Al(OH)6Cl 1.5H2O Layered Double Hydroxides: Precipitation Mechanism and Relative Stabilities
Fecha de publicación:
12/2014
Editorial:
American Chemical Society
Revista:
Journal of Physical Chemistry C
ISSN:
1932-7447
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A family of single-crystalline particles of M2Al(OH)6Cl·1.5H2O layered double hydroxides (LDH) with M(II) a transition-metal cation were obtained by a one-pot room-temperature homogeneous alkalinization driven by glycidol ring opening. In contrast with traditional homogeneous methods, LDH phases are obtained in the exchangeable chloride-containing form. The main precipitation steps were assessed by continuous measurement of pH profiles, field emission scanning electron microscopy, and powder X-ray diffraction, revealing the heterogeneous nucleation of LDH phase over previously formed nano-Al(OH)3 seeds. The precipitation pH plateau of each LDH follows the trend of the inherent solubility of the single M(II) phases obtained under alkalinization. A linear free-energy relation links the solubility of the bare M(II) hydroxides with the correspondent M(II)–Al(III) LDH, in good agreement with previously reported thermochemical models.
Palabras clave:
Layered Double Hydroxides
,
Chemical Synthesis
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos(UNIDEF)
Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Citación
Oestreicher, Víctor Santiago Jesús; Fabregas, Ismael Oscar; Jobbagy, Matias; One Pot Epoxide-Driven Synthesis of M2Al(OH)6Cl 1.5H2O Layered Double Hydroxides: Precipitation Mechanism and Relative Stabilities; American Chemical Society; Journal of Physical Chemistry C; 118; 51; 12-2014; 30274-30281
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