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Properties and applications of palygorskite-sepiolite clays

  • E. Galan (a1)

The palygorskite-sepiolite group of clay minerals has a wide range of industrial applications derived mainly from its sorptive, rheological and catalytic properties which are based on the fabric, surface area, porosity, crystal morphology, structure and composition of these minerals. For assessing potential industrial uses, the mineralogical and chemical composition of the clay and its basic physical and physico-chemical parameters must be determined. Then some particular properties of commercial interest can be modified and improved by appropriate thermal, mechanical and acid treatments, surface active agents, organo-mineral derivatives formation, etc. In this paper, a revision of the principal characteristics of commercial palygorskite-sepiolite clays is presented, and potential uses are suggested according to these data. New products and applications are being investigated and those concerning environmental protection in particular, are noted. Finally, possible health effects of these elongate clay minerals are discussed.

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Acosta, J.L., Rocha, C.M., Ojeda, M.C., Linares, A. & Arroyo, M. (1984) The effect of several surface modified sepiolites on the transition temperatures and crystallinity of filled polypropylene. Angew. MakromoL Chem. 126, 5157.
Acosta, J.L., Morales, E., Ojeda, M.C. & Linares, A. (1986) The effect of interfacial adhesion and morphology on the mechanical properties of polypropylene composites containing different acid surface treated sepiolites. J. Mater. Sci. 21, 725728.
Alvarez, A. (1984) Sepiolite: properties and uses. Pp. 253-287 in: Palygorskite and Sepiolite. Occurrences, Genesis and Uses. (Singer, A. & Galán, E., editors) Developments in Sedimentology 37, Elsevier, Amsterdam.
Alvarez, A. & Perez Castell, R. (1982) Sepiolite in the field of animal nutrition. Proc. 5th Int. Cong. Industrial Minerals, Madrid, 37–45.
Alvarez, A., Castillo, A., Perez Castell, R., Santaren, J. & Sastre, J.L. (1985) New trends in the use of sepiolite. Abstracts, Int. Clay Conf., Denver, p. 7.
Ampian, S.G. (1991) Clays. Pp. 271-304 in: Minerals Yearbook, v.1, Metals and Minerals, U.S. Dept. of the Interior, Bureau of Mines, Washington, D.C.
Bonilla, J.L., Lopez Gonzalez, J.D., Ramirez Saenz, A., Rodriguez Reinoso, F. & Valenzuela Calahorro, C. (1981) Activation of a sepiolite with dilute solutions of HNO3 and subsequent heat treatments. II. Determination of surface acid centres. Clay Miner. 16, 173180.
Bradley, W.F. (1940) The structural scheme of attapulgite. Am. Miner. 25, 405410.
Brauner, K. & Preisinger, A. (1956) Struktur und enstehung des Sepioliths. Tschermaks Miner. Petrog. Mitt., 6, 120140.
Brigatti, M.F., Medici, L. & Poppi, L. (1995) Interaction of Zn2+ and Pb2+ aqueous solutions with sepiolite. EUROCLAY'95. Leuven, 111-112.
Casal Piga, B. & Ruiz-Hitzky, E. (1977) Reaction of epoxides on mineral surfaces. Organic derivatives of sepiolite. Proc. 3rd Eur. Clay Conf., Oslo, 35-37.
Chambers, C.P.C. (1959) Some industrial applications of the clay mineral sepiolite. Silicates lnds. April, 181-189.
Clarke, G. (1989) Attapulgite's two tiers: gellants and absorbants. Pp. 86–89 in: Industrial Clays: A Special Review. Industrial Minerals, London.
Cornejo, J. & Hermosin, M.C. (1986) Efecto de la temperatura en la acidez superficial del producto obtenido por tratamiento ácido de sepiolita. Bol. Soc. Esp. Mineral. 9, 135138.
Cornejo, J. & Hermosin, M.C. (1988) Structural alteration of sepiolite by dry grinding. Clay Miner. 23, 391398.
Demircl, S., Erdocan, B. & Akav, Y. (1995) Removal of turbidity and color of sugar juices by using some Turkish bentonites and sepiolite. EUROCLAY'95, Leuven, 158-159.
Fernandez Alvarez, T. (1970) Superficie especffica y estructura de poro de la sepiolita calentada a diferentes temperaturas. Pp. 202–209 in: Poc. Reunión Hispano Belga de Minerales de la Arcilla, Madrid, CSIC.
Fernandez Alvarez, T. (1972) Activación de la sepiolita con ácido clorhídrico. Bol. Soc. Esp. Ceram. Vidr. 11, 365374.
Fernandez Alvarez, T. (1978) Efecto de la deshidratación sobre las propiedades adsorbentes de la palygorskita y sepiolita. Clay Miner. 13, 375–386.
Fernandez Hernandez, M.N. & Ruiz-Hitzky, E. (1979) Interacción de isocianatos con sepiolita. Clay Miner. 14, 295305.
Forteza, M., Cornejo, J. & Galan, E. (1988) Effects of fibrous clay minerals on dexamethasone stability. Proc. 10th Conf. Clay Mineralogy Petrology, 281-286.
Foster, M.D. (1960) Interpretation of the composition of trioctahedral micas. Prof. Pap. U.S. Geol. Survey 354-B, 11-49.
Galan, E. (1987) Industrial applications of sepiolite from Vallecas-Vicalvaro, Spain: A review. Proc. Int. Clay Conf., Denver, 400-404.
Galan, E., Brel, J.M., La Iglesia, A. & Robertson, R.H.S. (1975) The Caceres paiygorskite deposit, Spain. Proc. Int. Clay Conf. Mexico, 91-94.
Galan, E. & Castillo, A. (1984) Sepiolite-palygorskite in Spanish Tertiary basins: Genetical patterns in continental environments. Pp. 87 – 124 in: Palygorskite and Sepiolite. Occurrences, Genesis and Uses. (Singer, A. & Gahin, E., editors) Developments in Sedimentology 37, Elsevier, Amsterdam.
Galan, E., Mesa, J.M. & Sanchez, C. (1994) Properties and applications of palygorskite clays from Ciudad Real, Central Spain. Appl. Clay Sci. 9, 293302.
Gonzalez Hernandez, L., Ibarra Rueda, L. & Royo Martinez, J. (1978) Sepiolita: nueva carga inorgánica de procedencia nacional para mezclas de caucho. I Congreso de Química del Automovil, Barcelona, 46-58.
Gonzalez Hernandez, L., Ibarra Rueda, L., Chamorro Anton, C. & Rodriguez Diaz, A. (1981) New silica filler for rubber compounds. RUBBERCON'81, Harrogate, England, G3.1-G3,12.
Gonzalez Hernandez, L., Ibarra Rueda, L., Rodriguez Diaz, A. & Chamorro Anton, C. (1982) Preparation of silica by acid dissolution of sepiolite and study of its reinforcing effect in elastomers. Angew. Makromol. Chem. 103, 5160.
Gonzalez Hernandez, L., Ibarra, L.M., Rodriguez, A., Moya, J.J. & Valle, F.J. (1984) Fibrous silica gel obtained from sepiolite by HCl attack. Clay Miner. 19, 9398.
Gutierrez, E., Cheeseman, Ch. & Alvarez, A. (1995) Sepiolite in the solidification/stabilization of sludges containing organic compounds. EUROCLAY'95, Leuven, 297-298.
Haden, W.L. & Schwint, I.A. (1967) Attapulgite: its properties and applications. Ind. Engin. Chem. 59, 5869.
Helxos-Rybicka, E. (1985) Sorption of Ni, Zn and Cd on sepiolite. Clay Miner. 20, 525527.
Hermosin, M.C. & Cornejo, J. (1986) Methylation of sepiolite and palygorskite with diazomethane. Clays Clay Miner. 34, 591596.
Hermosin, M.C., Cornejo, J., White, J.L. & Hem, S.L. (1981) Sepiolite. A potential excipient for drugs subject to oxidative degradation. J. Pharm. Sci. 70, 189192.
Jimenez Lopez, A., Lopez Gonzalez, J.D., Ramirez Saenz, A., Rodriguez Reinoso, F., Valenzuela Calahorro, C. & ZURITA HERRERO. L. (1978) Evolution of surface area in a sepiolite as a function of acid and heat treatments. Clay Miner. 13, 375386.
Jones, B.F. & Galan, E. (1988) Sepiolite and palygorskite. Pp. 631-674 in: Hydrous Phyllosilicates. (Bailey, S.W., editor) Reviews in Mineralogy, Vol. 19, Mineralogical Society of America, Washington, D.C.
Lopez Gonzalez, J.D., Ramirez, A., Rodriguez, F., Valenzuela, C. & Zurita, L. (1981) Activación de una sepiolita con disoluciones diluidas de HNO3 y posteriores tratamientos térmicos. I. Estudio de la superficie especffica. Clay Miner. 16, 103–113.
Martindale, W. (1982) The Extra Pharmacopoeia: 28th ed., Pharm. Soc. Great Britain, Pharmaceutical Press, London, 2025 pp.
Mora, M.A., Sanchez, C. & Acosta, A. (1995) Adsorption of phenol on palygorskite. EUROCLAY'95, Leuven, 140-141.
O'Driscoll, M. (1992) European cat litter. Absorbing market growth. Industrial Minerals, 299, 46–65.
Oscarson, D.W., Van Scoyoc, G.E., & Ai-Ilrichs, J.L. (1986) Lysis of erythrocytes by silicate minerals. Clays Clay Miner., 34, 7486.
Paquet, H., Duplay, J., Valleron-Blanc, M.M. & Millot, G. (1987) Octahedral composition of individual particles in smectite-palygorskite and smectite-sepiolite assemblages. Proc. Int. Clay Conf. Denver, 73-77.
Perez Rodriguez, J.L., Carretero, M.I. & Maqueda, C. (1989) Behaviour of sepiolite, vermiculite and montmorillonite as supports in anaerobic digesters. Appl. Clay Sci. 4, 6982.
Pott, F., Bellmann, B., Mühle, H., Rodelsperger, K., Rippe, R.M., Roller, M. & Rosenbruch, M. (1990) Intraperitoneal injection studies for the evaluation of the carcinogenicity of fibrous phyllosilicates. Pp. 319-331 in: Health Related Effects of Phyllosilicates. (Bignon, J., editor) NATO ASI Series, G. Ecological Sci. Vol. G21, Springer-Verlag, Heidelberg.
Ruiz-Hitzky, E. (1974) Contribution à l’étude des réactions de greffage de groupements organiques sur les surfaces minérales. Greffage de la sépiolite. PhD thesis, Univ. Louvain, Belgium.
Ruiz-Hitzky, E. & Fripiat, J.J. (1976) Organomineral derivatives obtained by reacting organochlorosilanes with the surface of silicates in organic solvents. Clays Clay Miner. 25, 2530.
Santaren, J. (1993) European market developments for absorbent clays. Ind. Miner. 304, 35–47.
Santaren, J. & Alvarez, A. (1994) Assessment of the health effects of mineral dusts. The sepiolite case. Ind. Miner. 319, 101114.
Serna, C. & Van Socyoc, G.E. (1979) Infrared study of sepiolite and palygorskite surfaces. Proc. Int. Clay Conf. Oxford, 197-206.
Serratosa, J.M. (1979) Surface properties of fibrous clay minerals (palygorskite and sepiolite). Proc. Int. Clay Conf. Oxford, 99-109.
Suarez, M. (1992) El yacimiento de palygorskita de Bercimuel (Segovia): L Mineralogía y Génesis. II. Características físico-mecánicas del mineral y activación ácida. PaD thesis, Univ. Salamanca, Spain.
Sugiura, M. (1993) Removal of methanethiol by sepiolite and various sepiolite-methal compound complexes in ambient air. Clay Sci. 9, 33–41.
Sugiura, M., Fukumoto, K. & Inagaki, S. (1991a) Adsorption of odorous vapors by sepiolite in ambient air. Clay Sci. 8, 129145.
Sugiura, M., Hayashi, H. & Suzuki, T. (1991b) Adsorption of ammonia by sepiolite in ambient air. Clay Sci. 8, 87100.
Sugiura, M., Horii, M., Hayashi, H., Suzuki, T., Kamigaito, O., Nogawa, S. & Oishi, S. (1990) Deodorizing paper using β-sepiolite. Proc. 9th Int. Clay Cone Strasbourg, 91-100.
Van Olphen, E. & Fripiat, J. (1979) Data Handbook for Clay Materials and Other Non-metallic Minerals. Pergamon, Oxford, 346 pp.
Vicente Rodriguez, M.A., Lopez Gonzalez, J.D. & Bar'ARES MUOZ, M.A. (1994) Acid activation of a Spanish sepiolite: physicochemical characterization, free silica content and surface area of products obtained. Clay Miner. 29, 361367.
Wagner, J.C., Griffiths, D.M. & Munday, D.E. (1987) Experimental studies with palygorskite dust. Brit. J. Indus. Med. 44, 749763.
Weaver, C.E. & Pollard, L. (1973) The Chemistry of Clay Minerals. Elsevier, Amsterdam, 213 pp.
Xianzhen, Y. & Chou, Z. (1990) Purification of sepiolite and preparation of silica. Proc. 9th Int. Clay Conf. Strasbourg, 25-32.
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Clay Minerals
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