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Al-pillared interlayered montmorillonite (Al-PILM) was prepared using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as a starting material mixed with Al-pillaring solutions.The microstructure of the materials was studied by an X-ray powder diffractometer and a Fourier transform infrared (FTIR) spectrometer.The results indicated that the basal spacing [d(001) value] of the materials was increased significantly to 1.9194 nm relative to Na-montmorillonite (1.2182 nm).After calcined for 2 h at 300℃,the basal spacing was stabilized at 1.8394 nm and the layered structure of the materials was not destroyed.Thermal analysis was conducted by a thermal gravimetry and differential thermal analysis (TG-DTA) instrument,it showed that Al-PILM lost physically adsorbed water below 230.6℃ and water formed by dehydroxylation of the pillars at around 497.1℃, with a peak of the phase transformation at 903.0℃.
Al-pillared interlayered montmorillonite (Al-PILM) was prepared using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as a starting material mixed with Al-pillaring solutions. The microstructure of the materials was studied by an X-ray powder diffractometer and a Fourier transform infrared (FTIR) spectrometer.The results indicated that the basal spacing [d (001) value] of the materials was increased significantly to 1.9194 nm relative to Na- montmorillonite (1.2182 nm). After calcined for 2 h at 300 ° C, the basal spacing was stabilized at 1.8394 nm and the layered structure of the materials was not destroyed. Thermal analysis was conducted by a thermal gravimetry and differential thermal analysis (TG-DTA) instrument, it showed that Al-PILM lost physically adsorbed water below 230.6 ° C and water formed by dehydroxylation of the pillars at around 497.1 ° C with a peak of the phase transformation at 903.0 ° C.