Thermal decomposition kinetics of MgAl layered double hydroxides

Thermal Analysis On The Kinetics Of Magnesium-Aluminum Layered Double Hydroxides In Different Heating Rates

“…Layered double hydroxides(LDHs), also known as hydrotalcite (HT)-like materials, are a class of synthetic two-dimensional nanostructured anionic clays whose structure can be described as containing brucite-like layers [1,2], where a fraction of the divalent cations coordinated octahedrally by hydroxyl groups have been replaced isomorphously by trivalent cations [3], giving positively charged layers with charge-balancing anions between them; some hydrogen bonded water molecules may occupy any remaining free space in the interlayer region. LDHs are promising materials for a large number of practical applications in catalysis, adsorption, pharmaceutics, photochemistry, electrochemistry and so on [4,5].…”

Preparation and Structural Characterization of Alkaline Earth−Iron(III) Layered Double Hydroxides and their Acrylate-Intercalated Derivatives

“…Dependence of activation energy (E a ) on the degree of conversion () of dehydration by modulated thermogravimetry and the isoconversional method for MgAl-LDH (MgAl-E) [80].…”

“…Schematic representation of an LDH structure (a); detailed schematic view of some physisorbed water molecules within the layers (b) [80].…”

Dehydration-rehydration induced structural changes in pristine and composite layered double hydroxides

“…Valente et al investigated the thermal decomposition mechanisms, and the kinetics of the transformation from LDH to Mg(Al)O mixed oxide [37]. In general, four major steps were identified.…”

“…In general, four major steps were identified. They are as follows [37,38]: The dependence of activation energies (Ea) of the four steps on the degree of conversion (α) for MgAlCO3-LDH is displayed in Figure 4.…”