The objective of the present study is to assess the influence of temperature variation on phase composition of Ca-Mg-Al hydrotalcite. The temperature variation (50-90 °C) used to Ca-Mg-Al hydrotalcite synthesis from brine water and AICl3.9H20 by a coprecipitation method. The products were characterized by X-ray diffraction and Fourier Transform Infrared Spectroscopy. Results show that the highest crystallinity of Ca-Mg-Al hydrotalcite when reaction temperature is 90 °C. The reaction temperature is found to greatly affect the product morphology and its phase. With increasing reaction temperature, its crystallinity increased.
Keywords: Ca-Mg-Al hydrotalcite, brine water, reaction temperature, crystallinity
