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Characterization, pillaring and catalytic properties of a saponite from Vicálvaro, Madrid, Spain

Published online by Cambridge University Press:  09 July 2018

B. Casal ,
J. Merino ,
E. Ruiz-Hitzky ,
E. Gutierrez  and
A. Alvarez
B. Casal
Affiliation:
Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049-Madrid, Spain
J. Merino
Affiliation:
Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049-Madrid, Spain
E. Ruiz-Hitzky
Affiliation:
Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049-Madrid, Spain
E. Gutierrez
Affiliation:
R & D Department, TOLSA, S.A., c/Nuñez de Balboa, 51, 28001-Madrid, Spain
A. Alvarez
Affiliation:
R & D Department, TOLSA, S.A., c/Nuñez de Balboa, 51, 28001-Madrid, Spain
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Abstract

The characterization, pillaring ability and some catalytic properties of a saponite from the Vicálvaro deposit of Tolsa, located in Madrid have been studied. This mineral is associated with sepiolite in the same lacustrine environment. The raw saponite presents, as special characteristics, high specific surface area (>200 m2/g) and a high percentage of tetrahedral Al (90% of the total Al in the sample). Natural saponite gives rise to high conversions when used as a catalyst in the reaction of alkylation of benzene with 1-dodecene. Increased catalytic performances are obtained over the alumina-pillared saponite derivatives. These materials have also been tested in the cracking of gas-oil (microactivity test), giving good conversions and high selectivity towards the gasoline fraction, especially the pillared forms.

Type
Research Article
Information
Clay Minerals , Volume 32 , Issue 1 , March 1997 , pp. 41 - 54
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

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