Preparation and Characterization of Carbonate-type Mg–Al Layered Double Hydroxides by Ion Exchange Resins

Resumo

Carbonate-type Mg–Al layered double hydroxides were successfully prepared using ion exchange resins. Based on XRD patterns, 8 h and 40°C were considered to be an optimal reactive condition to obtain pure Mg₆Al₂(OH)₁₆CO₃ · 4H₂O. SEM showed a sheet structure of samples, the largest diameter and the mean thickness were roughly 2 µm and 100 nm, respectively. EDS datas indicated that temperature was one of key influence factors to obtain the excellent composite materials. FT-IR and TG-DSC results further confirmed that the proposed method was feasible and effective to prepare carbonate-type Mg–Al layered double hydroxides.