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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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