A fine-quality, regular Cu-Mg-Al hydrotalcite-like compound was synthesized via the glycothermal method using CuCl_2 \cdot 2H_2O, MgCl_2 \cdot 6H_2O, AlCl_3 \cdot 6H_2O, and Na_2CO_3 as raw materials and sodium hydroxide as the precipitant. Hydrotalcite samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric-differential thermal analysis, and Brunauer-Emmett-Teller N_2 surface area measurements. The influence of glycol content on the characteristics of the sample was investigated. The results show that the glycol content in the system had a greater impact on regular hydrotalcite with an intercalated structure. A Cu-Mg-Al hydrotalcite-like compound with a well-defined shape, distinct intercalated structure, regular quality, and good dispersing capability could be obtained under the following conditions: glycol volume ratio of 10%, hydrothermal temperature of 180 °C, and reaction time of 15 h. The compound obtained was well crystallized and had the morphology of a homogeneous and hexagonal sheet. The thickness of each hexagon in the hydrotalcite was about 40 nm, which was consistent with the value estimated with the Scherer equation.
Glycol, hydrothermal, Cu-Mg-Al hydrotalcite-like compound, synthesis structural analysis
WU, JIANSONG; XIAO, YINGKAI; LIU, YUPING; XU, WANBANG; LIANG, MEIFANG; CHENG, JIAN; WAN, JIANPING; and CHEN, LINGZHU
"Synthesis and structural analysis of a regular Cu-Mg-Al hydrotalcite-like compound,"
Turkish Journal of Chemistry: Vol. 35:
6, Article 6.
Available at: https://journals.tubitak.gov.tr/chem/vol35/iss6/6