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Synthesis And Characterization Of Pillared Acid-Activated Montmorillonites

  • Robert Mokaya (a1), William Jones (a1), Mavis E. Whittle (a2) and Mary E. Davies (a2)

Abstract

Polymeric hydroxy-Al cations were introduced into the interlayer of acid-activated montmorillonites by cation exchange. The resulting pillared materials possessed layer spacings of 18 – 20 Å, surface areas between 250 – 320 m2/g, pore volumes in the range 0.3 – 0.38 cc/g and pore diameters in the range 32 – 40 Å depending on preparation procedures (i.e pillaring temperature and drying method). Powder XRD analysis indicated that the pillars formed were stable to temperatures above 500 °C. The surface acidity of these type of pillared clays was higher than that of pillared non-activated clays. Preliminary studies on their adsorption capacity for chlorophyll showed that they were superior to pillared non-activated clays.

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1. Brindley, G.W. and Yamanaka, S., Clays and Clay Minerals, 26, 21 (1978); Amer. Mineral., 6A, 830 (1979).
2. Occelli, M.C. and Tindwa, R.M., Clays and Clay Minerals, 31, 22 (1983).
3. Tennakoon, D.T.B., Jones, W. and Thomas, J.M., J. Chem. Soc., Faraday Trans. I 82, 3081 (1986)
4. Pinnavaia, T.J., Tzou, M.S., Landau, S.D. and Raythatha, R.H., J. Mol. Cat., 27, 195 (1984).
5. Figueras, F., Cat. Rev. Sci. Eng., 30, 457 (1988)
6. Bellatoni, A., Plee, D. and Meriaudeau, P., Applied Cat., 63, 1.7 (1990).
7. Stacey, M.H., Catalysis Today, 2, 621 (1988).
8. Zelke, R.C. and Pinnavaia, T.J., Clays and Clay Minerals, 36, 403 (1988).
9. Battioni, P., Lallier, J.P., Barloy, L. and Mansuy, D., J. Chem. Soc., Chem. Comm., 16, 1149 (1989); L. Barloy, J.P. Lallier, P. Battioni, D. Mansuy, Y. Piffard, M. Tournoux, J.B. Valim and W. Jones, In Press (1991).
10. Taylor, D.R. and Jenkins, D.B., Soc. Min. Eng. AIME Trans., 282, 1901 (1986)
11. Mokaya, R. and Jones, W., Unpublished results.
12. Morgan, D.A., Shaw, D.B., Sidebottom, M.J., Soon, T.C. and Taylor, R.S., J.A.O.C.S., 62, 292 (1986)
13. Taylor, D.R., Jenkins, D.B. and Ungerman, C.B., J.A.O.C.S., 66, 334 (1989).
14. Moini, A. and Pinnavaia, T.J., Solid State Ionics, 26, 119 (1988).
15. Singh, S. S. and Kodama, H., Clays and Clay Minerals, 36, 397 (1988).
16. Tichit, D. and Figueras, F, in Pillared Layer Structures: Current Trends and Applications, Ed. Mitchel, I.V. (Elsevier Science Publishers, London) p.149 (1990).
17. Frenkel, M., Clays and Clay Minerals, 22, 435 (1974).
18. Bartley, G.J.J. and Burch, R., Applied Cat., 19, 175 (1985).

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