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Etude cinétique de l'attaque acide de la sépiolite: modifications des propriétés texturales

Published online by Cambridge University Press:  09 July 2018

A. Corma ,
A. Mifsud  and
J. Pérez
A. Corma
Affiliation:
Instituto de Catálisis y Petroleoquímica, CSIC, Serrano, 119, 28006 Madrid
A. Mifsud
Affiliation:
Instituto de Fisico-Química Mineral, CSIC, Serrano, 115 bis 28006 Madrid, Spain
J. Pérez
Affiliation:
Instituto de Catálisis y Petroleoquímica, CSIC, Serrano, 119, 28006 Madrid
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Resume

Dans ce travail on a étudié l'influence des conditions expérimentales du traitement acide d'une sépiolite sur la vitesse d'extraction des ions Mg et la variation des propriétés texturales des produits résultants. On a élaboré un modèle cinétique pour l'attaque acide de la sépiolite ce qui nous a permis de calculer les paramètres cinétiques et, en dernier lieu d'obtenir des valeurs pour l'energie d'activation du processus.

Abstract

Abstract

The influence of different operational variables used during the acid treatment (HCl) of sepiolite on the rate of extraction of Mg ions and textural properties of the resulting products is described. A model is given from which kinetic parameters and the activation energy of the process are calculated.

Type
Research Article
Information
Clay Minerals , Volume 21 , Issue 1 , March 1986 , pp. 69 - 84
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1986

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