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Synthesis and Characterization of Ln/Al Pillared Clays

Published online by Cambridge University Press:  10 February 2011

A. López-Ortega ,
J. M. Domínguez ,
A. Rojas-Hremández ,
A. Benitez-Patricio  and
M. Salmón
A. López-Ortega
Affiliation:
Instituto Mexicano del Petróleo, Gerencía de Catálisis y Materiales, Eje Central L. Cardénas 152, 07730 Méexico
J. M. Domínguez
Affiliation:
Instituto Mexicano del Petróleo, Gerencía de Catálisis y Materiales, Eje Central L. Cardénas 152, 07730 Méexico
A. Rojas-Hremández
Affiliation:
UAM-I, Dpto. Química, P.O.Box 55–534. México D.F.
A. Benitez-Patricio
Affiliation:
D. F. UNAM, FQ,P.O.Box 20–364, México D.F.
M. Salmón
Affiliation:
Instituto Mexicano del Petróleo, Gerencía de Catálisis y Materiales, Eje Central L. Cardénas 152, 07730 Méexico
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Abstract

La3+ −Al3+ and Ce3+ −A13+ pillar precursors were synthesized and intercalated in swelling montmorillonite type clays. 27Al-NMR and 139La-NMR spectra do not confirm chemical interaction between Al and La ions in solution, but after pillaring and calcination (400°C) d-spacings in the range 18.5 Å−20.5 Å indicate indeed a strong interaction between the Al-La species. Also, Ce4+ (Sulfate) cations do interact with Al3+ in the pillar-precursor-solution, into the pH interval 2.78≤p.H ≤3.99.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 51
Copyright
Copyright © Materials Research Society 1996

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References

(1).- Ocelli, M.L.; Psaras, D.; Suib, S.L.. J Catal. 96,363 (1985).Google Scholar
(2).- Rosa-Brussin, M.F., Catal.-Rev.- Sci. Eng., 37 (1), 1–100 (1985).Google Scholar
(3).- Ramos-Galván, C.E.; Sandoval-Robles, G.; Casttillo-Mares, A. and Dominguez, J.M., Applied Catal., (1996) In Press.Google Scholar
(4).- Occelli, M.L: in “Fluid Catalytic Craking II”, ACS Synp. Ser. 140. 452, Eds., M.L. Ocelli; 1991 (343–363).Google Scholar
(5).- Plea, D., Borg, F., Gatiman, L. and Fripiat., J. J. Amer. Chem. Soc. 107, 2362 (1985).Google Scholar
(6).- Ocelli, M.L., Dominguez, J.M. and Eckert., H. J. Catal., 141 (1993) 510–523.Google Scholar
(7).- Guan, J., Min, E. and Yu, Z., U.S. Patent 4,757,040 (1987).Google Scholar
(8).- Tokarz, M. and Shabtai, J., Clays and Clays Minerals, vol 3, Ho. 2 (1985) 89–97.Google Scholar
(9).- Mc Cauley, J.R., U.S. Patent 4,952,544 (1990).Google Scholar
(10).- Caballero, L., Dominguez, J.M., de los Santos, J.L., Montoya, A. and Navarrete, J., in “Synthesis of Microporous Metrials: Zeolites, clays and Nanostructures, Eds Occelli, M., Dekker, M.. N.Y. (1996). Chpt. 30.Google Scholar