Synthesis of Al2O3-pillared montmorillonite by intercalation of “giant” aluminum polycations

M.F. Butman1, N.L. Ovchinnikov1, V.V. Arbuznikov1, A.V. Agafonov2, B. Nuralyev1
1Ivanovo State University of Chemistry and Technology, Sheremet’evsky prosp. 7, 153000 Ivanovo
2G.A. Krestov Institute of Solution Chemistry of the RAS, Akademicheskaya St. 1, 153045 Ivanovo
Possibility of control of a separation of silicate layers in montmorillonite in the wide range of values of basal distance d001 is shown at intercalation of aluminum polycations of the different size. Change of concentration of complex forms of the polycations was reached by a variation of a hydrolysis ratio [OH-]/[Al3+] of the intercalating solution and its hyper thermal processing in the autoclave. Formation and efficiency of intercalation of "giant" ions [Al30O8(OH)56(H2O)24]18+ were inspected by the photometry, fluorescent spectroscopy, and small-angle X-ray diffraction. The cross-linking of silicate layers of montmorillonite in the course of a pillaring was fixed by the IR-spectroscopy.
Received: 04 June 2013   Revised: 11 June 2013   Accepted: 08 July 2013
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