2011•Advanced materials researchOpen access

Preparation and Microstructure of Al-Intercalated Vermiculite

Chun Feng Wang, Fei Zhou, Hua Zhi Gu, Hong Xi Zhu, Ya Wei Li

Abstract

Crude vermiculite is used as raw materials, heat-treated for activation, leached with a complexing acid, exchanged with sodium solution, following contacted with polyhydroxyl aluminium solution. The Al-intercalated vermiculites are prepared by ion exchange. The phase and microstructure of the composite material are analyzed by means of XRD, TEM, TG-DSC, et al. The results reveal that the basal spacing of vermiculite expanded by intercalation of Al-species, and the interlayer of vermiculite inlaid with a large amount of nanometer Al-species particles.

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Available abstract

Key concepts: Vermiculite, Intercalation (chemistry), Microstructure, Materials science, Ion exchange, Raw material, Composite number, Aluminium