STRATUL DUBLU ELECTRIC AL MONTMORILONITULUI. I. INFLUENŢA INTERCALĂRII CU OLIGOMERI DE ALUMINIU

Vasile RUSU

Abstract


A fost dezvoltat criteriul pentru delimitarea caracteristicilor stratului dublu electric în proximitatea suprafeţei bazale şi suprafeţei laterale ale montmorilonitului intercalat cu oligomeri de aluminiu şi au fost determinate caracteristicile stratului dublu electric în modelul Stern. În funcţie de cazul analizat, pentru stratul dublu în proximitatea suprafeţei bazale sau în proximitatea suprafeţei laterale pot fi estimate caracteristicile stratului compact – potenţialul Stern Yd, energia de adsorbţie specifică chimică Ø, densitatea de sarcini sc.

EDL FOR MONTMORILLONITE. I. THE INFLUENCE OF Al-PILLARING

 

It was developed the criterion for delimiting of characteristics for electric double layer (EDL) close to the basal surface and edge surface of pillared Al-montmorillonite, and the EDL characteristics in the Stern model were determined. Depending on the case, for EDL close to the basal surface or edge surface, the main characteristics of Stern layer can be estimated, i.e. the Stern potential Yd, chemical specific adsorption energy Ø and charge density sc.


Keywords


pillared Al-montmorillonite, basal and edge surfaces, electrical double layer.

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References


CHOROVER, J., SPOSITO, G. Surface charge characteristics of kaolinitic tropical soils. In: Geochimica et Cosmo-chimica Acta, 1995, vol.59, no.5, p.875-884.

CHOROVER, J., AMISTADI, M.K., CHADWICK, O.A. Surface charge evolution of mineral-organic complexes during pedogenesis in Hawaiian basalt. In: Geochimica et Cosmochimica Acta, 2004, vol.68, no.23, p.4859-4876.

SCHROTH, B.K., SPOSITO, G. Surface charge properties of kaolinite. In: Clays and Clay Minerals, 1997, vol.45, no.1, p.85-91.

SPOSITO, G. The Surface Chemistry of Natural Particles. Oxford University Press, Inc., 2004.

BOURG, I.C., SPOSITO, G., BOURG, A.C.M. Modeling the acid-base surface chemistry of montmorillonite. In:

J. Colloid Interface Sci., 2007, vol.312, no.2, p.297-310.

RUSU, V. Caracteristicile stratului dublu electric în proximitatea suprafeţei laterale a montmorilonitului. În: Studia Universitatis Moldaviae. Revistă ştiinţifică a Universităţii de Stat din Moldova. Seria „Ştiinţe reale şi ale naturii”. 2015, nr.6(86), p.156-167.

STERN, O.Z. In: Elektrochem. 1924, vol.30, p.508.

van OLPHEN, H. An introduction to Clay Colloid Chemistry. Wiley-Interscience, NY, 1963.

OVERBEEK, J.Th.G. Chapter IV Electrochemistry of double layer. Chapter VI Colloidal particle interaction. In: Colloid Science. Edited by H. R. Kruyt. Volume I. Irreversible systems. Elsevier, 1952.

GOLDBERG, S. Adsorption Models Incorporated into Chemical Equilibrium Models. In: Soil Science Society of America, American Society of Agronomy. Special Publication 42, 1995, p.75-95.

GUNNARSSON, M., RASMUSSON, M., WALL, S., AHLBERG, E., ENNIS, J. Electroacoustic and Potentiometric Studies of the Hematite-Water Interface. In: J. Coll. Inter. Sci., 2001, vol.240, p.448-458.

WESTALL, J.C. Reactions at the Oxide-Solution Interface: Chemical and Electrostatic Models. In: Geochemical Processes at Mineral Surfaces. James A. Davis, Kim F. Hayes (Eds). ACS symposium series, Vol. 323. American Chemical Society, Washington, DC 1986, p.54-78.

STUMM, W., HOHL, H., DALANG, F. Interaction of metal ions with hydrous oxide surfaces. In: Crouticu Chem. Acta, 1976, vol.48, p.491.

GOLDBERG, S., DAVIS, J.A., HEM, J.D. The Surface Chemistry of Aluminum Oxides and Hydroxides. In: The Environmental Chemistry of Aluminum. Second Edition. Edited by Garrison Sposito. CRC Press. Inc., 1996, p.271-331.

RUSU, V., NASTAS, R., OBREJA-NISTOR, L., MAFTULEAC, A., PETUHOV, O., PUŞCAŞU, B. Particularităţi de sinteză a adsorbanţilor intercalaţi pe bază de montmorilonit. În: Buletinul Institutului de Geologie şi Seismologie al AŞM, 2011, nr.1, p.94-105.

RUSU, V., MAFTULEAC, A., PETUHOV, O. Caracteristici sorbţional-structurale ale montmorilonitului intercalat convenţional şi competitiv cu oligomeri de aluminiu. În: Studia Universitatis. Seria „Ştiinţe reale şi ale naturii”, 2012, nr.6(56), p.87-95.

RUSU, V., NASTAS, R., ŢÎMBALIUC, N., GONŢA, A., MAFTULEAC, A. Proprietăţile sorbţionale şi catalitice ale montmorilonitului intercalat cu oligomeri de aluminiu. În: Studia Universitatis Moldaviae. Revistă ştiinţifică a Universităţii de Stat din Moldova. Seria „Ştiinţe reale şi ale naturii”. 2014, nr.1(71), p.166-174.

STUMM, W., MORGAN, J.J. Aquatic chemistry. An introduction emphasizing. Chemical equilibria in natural waters. John Wiley and Sons, Inc., 1970.

HELMY, A.K., FERREIRO, E.A., de BUSSETTI, S.G. Cation exchange capacity and condition of zero charge of hydroxy-A1-montmorillonite. In: Clays and Clay Minerals, 1994, vol.42, no.4, p.444-450.

ADAMSON, A.W. Physical chemistry of surfaces. Third edition, John Wiley and Sons, Inc., 1976.

ADAMSON, A., GAST, A. Physical Chemistry of Surfaces. 6th Ed. John Wiley and Sons, Inc., 1997.

STUMM, W., MORGAN, J.J. Aquatic chemistry. Chemical equilibria and rates in natural waters. Third edition. John Wiley and Sons, Inc., 1996.

GRAHAME, D.C. The electrical double layer and the theory of electrocapilllarity: In: Chemical Reviews, 1947, vol.41, p.441-501.

van RAIJ, B., PEECH, M. Electrochemical properties of some oxosols and alfisols of tropics. In: Soil Science Society of America Proceedings, 1972, vol.36, p.587-593.

SRIDHARAN, A., SATYAMURTY, P.V. Potential-distance relationships of clay-water systems considering the Stern theory. In: Clays and Clay Minerals, 1996, vol.44, no.4, p.479-484.

DUC, M., GABORIAUD, F., THOMAS, F. Sensitivity of the acid–base properties of clays to the methods of preparation and measurement. I. Literature review. In: J. Colloid Interface Sci., 2005, vol.289, no.1, p.139-147.

DUC, M., GABORIAUD, F., THOMAS, F. Sensitivity of the acid–base properties of clays to the methods of preparation and measurement. 2. Evidence from continuous potentiometric titrations. In: Journal of Colloid and Interface Science, 2005, vol.289, p.148-156.

KOSMULSKI, M. pH-dependent surface charging and points of zero charge. IV. Update and new approach. In: Journal of Colloid and Interface Science, 2009, vol.337, p.439-448.

BOCKRIS, M.J., HKAN, S.U.M. Surface Electrochemistry. A Molecular Approach. Plenum Press, London. 1993.

BOLT, G.H. Physico-chemical properties of the electric double layer on planar surfaces. Ph.D. Thesis, Cornell University, 1954.

GIESE, JR. R.F., COSTANZO, P.M. Behavior of Water on the Surface of Kaolin Minerals. In: Geochemical Processes at Mineral Surfaces. James A. Davis, Kim F. Hayes, Eds. ACS symposium series, vol.323. American Chemical Society, Washington, DC 1986, p.37-53.

GUNNARSSON, M., ABBAS, Z., AHLBERG, E., GOBOM, S., NORDHOLM, S. Corrected Debye–Huckel analysis of surface complexation. II. A Theory of Surface Charging. In: J. Colloid and Interface Sci., 2002, vol.249, p.52-61.

HALL, P.G., ROSE, M.A. Dielectric properties of water adsorbed by kaolinite clays. In: J. Chem. Soc. Faraday, 1978, vol.174, p.1221-1233.

HELMY, A.K., NATALE, I.M. Effect of the dielectric constant on the double layer on clays. In: Clays and Clay Minerals, 1985, vol.33, no.4, p.329-332.

HOEKSTRA, P., DOYLE, W.T. Dielectric relaxation of surface adsorbed water. In: J. Colloid Interface Sci., 1971, vol.36, p.513-521.

HUNTER, R.J. Foundations of Colloidal Science. Second ed. Oxford: Oxford Univ. Press, 2001.

LEVINE, S. Adsorption isotherms in the electric double layer and the discreteness of charge effect. In: J. Colloid Interface Sci., 1971, vol.37, p.619-634.

NELSON, S.M., HUANG, H.H., SUTTON, L.E. Dielectric study of water, ethanol and acetone adsorbed on kaolinite. In: Trans. Faraday Soc., 1969, vol.65, p.225-243.

OUTHWAITE, C.W. A preliminary treatment of solute and solvent interactions in the diffuse part of the electric double layer. In: Can. J. Chem., 1981, vol.59, p.1854-1859.

ROBINSON, K., LEVINE, S. The discreteness-of-charge effect at charged aqueous interfaces: III. Smoothly varying dielectric constant in inner region at mercury interface. In: Journal of Electroanalytical Chemistry, 1973, vol.47, p.395-411.

DAVIS, J.A., KENT, D.B. Surface complexation modeling in aqueous geochemistry. In: Mineral-Water Interface Geochemistry. Reviews in Mineralogy. Hochella M.F., White A.R. (Eds.). Mineralogical Society of America, Washington, D.C. 1990, vol.23, p.177-260.

Modeling Adsorption Processes: Issues in Uncertainty, Scaling, and Prediction. Prepared by Criscenti L.J., Eliassi M., Cygan R.T., Colon J.C.F., Goldberg S. Prepared for Division of Systems Analysis and Regulatory Effectiveness. Office of Nuclear Regulatory Research. U.S. Nuclear Regulatory Commission. 2005, Washington, DC 20555-0001.

PABALAN, R.T., TURNER, D.R., BERTETTI, F.P., PRIKRYL, J.D. UraniumVI sorption onto selected mineral surfaces: Key geochemical parameters. In: Adsorption of Metals by Geomedia: Variables, Mechanisms, and Model Applications. Jenne E.A. (Ed.). 1998. Academic Press, NY, p.99-130.


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