Preparation of Small Particle Sized ZnAl-Hydrotalcite-Like Compounds by Ultrasonic Crystallization

Synthesis and Characterization of Hybrid Mg(OH)2 and CeCO3OH Composite with Improved Activity Towards Henry Reaction

“…Earlier research shows that the crystallinity of the sample decreases with increasei n cerium due to the larged istortion introduced in the layers because of the ionic radii. [30] The XRD patterns of MeCe-HDC are identicalt ot he reference data of Mg(OH) 2 and CeCO 3 OH shown in Figure 3, confirming the presence of Mg(OH) 2 and CeCO 3 OH in the material. Mg(OH) 2 is present in aH exagonal form in the material with characteristic peaks at 18.65 (001), 32.81 (100), 38.01 (011), 58.…”

Effect of copper and eucalyptol on the bactericidal activity of ZnAl- and MgAl-LDH clays

“…[16] As the LDH syntheses were performed by simultaneous dropping the metal salts and the alkaline solutions at constant pH 9, the supersaturation is probably low and, therefore, the small crystallites could be attributed to the ultrasound treatment. [17] Besides, the XRD patterns reported in Fig. 1(a) reveal a lower crystallinity of Mg-than Zn-containing LDH clays, in accordance with the behavior generally reported in the literature.…”

Hydrotalcites with heterogeneous anion distributions: a first approach to producing new materials to be used as vehicles for the successive delivery of compounds

“…The samples synthesized with a metallic molar ratio of 3 presented more regular 00l peaks, independent of the synthesis method (Rivera et al , 2006; Xie et al , 2006). By contrast, samples crystallized in the presence of microwaves or ultrasound at molar ratios of 2 or 4 show two maxima in the 003 and 006 peaks or a shoulder at the right-hand side of the 003 peak.…”