A Simple Mechanochemical Route to Layered Double Hydroxides: Synthesis of Hydrotalcite-Like Mg-Al-NO3-LDH by Manual Grinding in a Mortar

authors	Ay, AN; Zumreoglu-Karan, B; Mafra, L
nationality	International
journal	ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
author keywords	Mechanochemistry; Layered double hydroxides; Intercalations; NMR spectroscopy; Borates
keywords	MG-AL RATIO; CYCLOHEXANONE-OXIME; BORON; ADSORPTION; COMPOUND; EXCHANGE; NICKEL; ANIONS; OXIDES; FORM
abstract	Hydrotalcite-like Mg-Al-NO3-layered double hydroxide (LDH) was successfully prepared in a mortar by manually grinding the hydrated magnesium and aluminum nitrate salts with sodium hydroxide. Various techniques, including XRD, MAS NMR, FTIR, SEM; thermogravimetric and differential thermal analyses (TGA,DTA), Surface area and zeta potential measurements were used to establish a correlation between the LDH samples prepared in the mortar and by co-precipitation. The LDH prepared in the mortar showed all the characteristics of a layered structure but with a lower crystallinity. This product was tested for its anion exhange property with tetraborate anions and 52% of the theoretical exchange capacity was reached. The mortar route does not require heating/refluxing treatment, CO-free atmosphere and solvent as in the conventional preparation methods and allows obtaining LDHs in a short reaction time.
publisher	WILEY-BLACKWELL
issn	0044-2313
year published	2009
volume	635
issue	9-10
beginning page	1470
ending page	1475
digital object identifier (doi)	10.1002/zaac.200801287
web of science category	Chemistry, Inorganic & Nuclear
subject category	Chemistry
unique article identifier	WOS:000269281600033