Title :
Preparation and Characterization of Al-pillared Montmorillonites
Author :
Hongyan, Xu ; Aihong, Guo ; Hongfei, Xu ; Yonggang, Wang
Author_Institution :
Coll. of Resources & Environ., Hebei Polytech. Univ., Tangshan, China
Abstract :
Al-pillared montmorillonites (Al-MMT) were synthesized from natural occurring sodium montmorillonite through the exchange of inter-lamellar ions with hydroxyalumina polycations. Furthermore, the morphology, composite structure and pore properties of such composite materials were investigated by Powder X-ray Diffraction (XRD), Fourier Transformation Infra-red Spectra (FTIR) and Nitrogen Adsorption-Desorption Isotherms The products retain their layered structure and their pore structures are a slit-shaped pore between plate-like particles. The resultant products possess BJH pore volume as large as 0.18cm3g-1, high BET specific surface area of over 100m2g-1, narrow pore size distribution in the mesopore region 7-7.5nm after thermal treatment at 500degC.
Keywords :
Fourier transform spectra; X-ray diffraction; adsorption; clay; composite materials; desorption; infrared spectra; minerals; porosity; porous materials; purification; water pollution; water treatment; Al-pillared montmorillonites; BET specific surface area; BJH pore volume; Fourier transformation infrared spectra; composite structure; hydroxyalumina polycations; interlamellar ions; mesopore region; natural occurring sodium montmorillonite; nitrogen adsorption-desorption isotherms; pore properties; pore size distribution; powder X-ray diffraction; temperature 500 C; thermal treatment; Aluminum; Carbon dioxide; Educational institutions; Infrared spectra; Nitrogen; Powders; Surface morphology; Water pollution; X-ray diffraction; X-ray scattering; BET surface area; X-ray diffraction; montmorillonite;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.449
