Preparation and Analysis of Kaolinite Intercalated by Potassium Acetate
The kaolinite-potassium acetate composite was prepared by the immersion method. The intercalation composites were characterized by means of Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Fourier transformation infrared (FT-IR) and High-resolution thermogravimetric analysis (HRTG). The results of XRD show that the intercalation of kaolinite by potassium acetate causes an increase of the basal spacing from 0.718 to 1.42nm. Thermal analysis shows the dehydroxylation of kaolinite decreased from 464 °C to 459.5 °C after intercalation of potassium acetate and three endotherms at 280, 323 and 459.5 °C attributed to the loss of water in the composite, potassium acetate and hydroxyl in the composite.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
X. M. Du et al., "Preparation and Analysis of Kaolinite Intercalated by Potassium Acetate", Advanced Materials Research, Vols. 150-151, pp. 1220-1224, 2011