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Structural, Textural and Catalytic Properties of Al-, Ti - Pillared Clays

  • C. E. Ramos-Galván (a1), J. M. Dominguez (a2), G. Sandoval-Robles (a1), A. Castillo-Mares (a1) and N. Nava E (a2)...

Abstract

Al-, Ti- and Zr-pilared clays were characterized and NiMo/Pilc's were tested in HDS reactions. The combination of activity measurements with Mossbauer Spectroscopy and x-ray microanalysis at microscopical scale give insight in the metal phases migration during pillaring, reaction and regeneration steps. α-Fe phase in free Fe2O3 islands predominate together with structural Fe3+ phase, but during the catalytic reaction Fe2+ forms. Delamination of the Ti- and Zr-Clay supports, together with high Lewis acidity might enhance their catalytic properties.

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(2) Landis, M. E., Afdembrik, B. A., Johnson, I. D., Kiiker, G. W. and Rubin, M. K., J. Amer. Chem. Soc. 113, 3189 (1991)
(3) Bradley, J. M., Kydd, R. A., Yamdagni, R. and Fyle, C. A. in “Expanded Clays and Other Microporous Solids”, Van Nostrand Reinhold, Vol. II, New York, Eds. Occelli, M. L. and Robson, H. E., 13, (1992).
(4) Rosa-Brussin, M. F., Catal. Rev. Sci. Eng. 37 (1), 1100 (1995)
(5) Ramos-Galvan, C. E., Sandoval-Robles, G., Castillo-Mares, A., Domínguez, J. M., Appl. Catal. In Press (1996).

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Structural, Textural and Catalytic Properties of Al-, Ti - Pillared Clays

  • C. E. Ramos-Galván (a1), J. M. Dominguez (a2), G. Sandoval-Robles (a1), A. Castillo-Mares (a1) and N. Nava E (a2)...

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