Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-23T18:48:26.957Z Has data issue: false hasContentIssue false
  • English
  • Français

Kinetics of the acid leaching of palygorskite: Influence of the octahedral sheet composition

Published online by Cambridge University Press:  09 July 2018

A. Corma ,
A. Mifsud  and
E. Sanz
A. Corma
Affiliation:
Instituto de Tecnologia Quimica UPV-CSIC, Camino de Vera s/n. 46071, Valencia, Spain
A. Mifsud
Affiliation:
Instituto de Tecnologia Quimica UPV-CSIC, Camino de Vera s/n. 46071, Valencia, Spain
E. Sanz
Affiliation:
Instituto de Tecnologia Quimica UPV-CSIC, Camino de Vera s/n. 46071, Valencia, Spain
Get access Rights & Permissions [Opens in a new window]

Abstract

A study has been carried out on the influence of acid concentration, time and temperature of reaction, liquid to solid ratio and chemical composition of the mineral on the extension and selectivity of the octahedral cations extracted during acid leaching of palygorskite. The mechanism of the extraction of Mg2+, Al3+, and Fe3+ is discussed on the basis of kinetic models fitted for a reacting-shell model, taking into account particle shape and the rate controlling step. A model is given from which kinetics parameters and the activation energy of the process are calculated. The different behaviour observed for the two palygorskites could be explained on the basis of their differences in surface areas.

Type
Research Article
Information
Clay Minerals , Volume 25 , Issue 2 , June 1990 , pp. 197 - 205
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abdul-Latif, N. & Weaver, C.G. (1969) Kinetics of acid dissolution of palygorskite (attapulgite) and sepiolite. Clays Clay Miner., 17, 169–178.CrossRefGoogle Scholar
Bradley, W.F. (1940) The structural scheme of attapulgite. Am. Miner., 25, 405–413.Google Scholar
Caillere, S. & Henin, S. (1961) Palygorskite. Pp. 343–353 in: The X-ray Identification and Crystal Structure of Clay Minerals.(G. Brown, editor). Mineralogical Society, London.Google Scholar
Carberry, J.J. (1976) Chemical and Catalytic Reaction Engineering. McGraw Hill, New York.Google Scholar
Corma, A., Mifsud, A. & Sanz, E. (1987) Influence of the chemical composition and textural characteristics of palygorskite on the acid leaching of octahedral cations. Clay Miner., 22, 225–232.Google Scholar
Chaussidon, J. & Vilain, M. (1962) Etude cinetique de la dissolution acide d'une vermiculite. Ann. Agron., 13, 5–19. Google Scholar
Drits, V.A. & Alexandrova, V.A. (1966) A propos de la nature cristallochimique de la palygorskite. Zap. Vses. Mineral Obshch. XCV-5, 551–560.Google Scholar
Drits, V.A. & Sokolova, G.V. (1971) Structure de la palygorskite. Kristallographia,, 16, 228–231.Google Scholar
Exner, O. (1966) Collect. Czech. Commun., 31, 3222.CrossRefGoogle Scholar
Fischer, T. (1955) Statistical Methods for Chemists. John Wiley & Sons, New York.Google Scholar
Gastuche, M.C., Delmon, B. & Vielvoye, L. (1960). La cinetique des reactions heterogenes. Attaque du reseau silicoaluminique des kaolinites par Tacide chlorhydrique. Bull. Soc. Chim. Fran., 60, 60.Google Scholar
Heller-Kallai, L. & Rozenson, I. (1981) Mossbauer studies of palygorskite and some aspects of palygorskite mineralogy. Clays Clay Miner., 29, 226–232.CrossRefGoogle Scholar
Levenspiel, O. (1979) Chemical Reaction Engineering. John Wiley & Sons, New York.Google Scholar
Mifsud, A., Rautureau, M. & Fornes, V. (1978) Etude de Teau dans la palygorskite a l'aide des analyses thermiques. Clay Miner., 13, 367–374.CrossRefGoogle Scholar
Osthaus, B. (1956) Kinetic studies on montmorillonite and nontronite by the acid-dissolution techniques. Clays Clay Miner., 4, 301–321.CrossRefGoogle Scholar
Ross, G.J. (1967) Kinetics of acid dissolution of an orthochlorite mineral. Can. J. Chem., 45, 3031-3034.CrossRefGoogle Scholar
Serna, J.C., Van Scoyoc, G.E. & Ahlrichs, J.L. (1977) Hydroxyl groups and water in palygorskite. Am. Miner., 62, 784–792.Google Scholar
Singer, A. (1977) Dissolution of two Australian palygorskites in dilute acid. Clays Clay Miner., 25, 126–130.CrossRefGoogle Scholar