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Interpretation of the infrared spectrum of the -clays: application to the evaluation of the layer charge

Published online by Cambridge University Press:  09 July 2018

S. Petit ,
D. Righi ,
J. Madejová  and
A. Decarreau
S. Petit
Affiliation:
Université de Poitiers, CNRS UMR 6532 ‘HydrASA’, 40, avenue du Recteur Pineau, 86022 Poitiers Cedex, France
D. Righi
Affiliation:
Université de Poitiers, CNRS UMR 6532 ‘HydrASA’, 40, avenue du Recteur Pineau, 86022 Poitiers Cedex, France
J. Madejová
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36 Bratislava, Slovakia
A. Decarreau
Affiliation:
Université de Poitiers, CNRS UMR 6532 ‘HydrASA’, 40, avenue du Recteur Pineau, 86022 Poitiers Cedex, France
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Abstract

The IR spectra of -saturated smectites were examined in terms of their charge characteristics. The υ4 band near 1440 cm-1, observed in the DRIFTS spectra (obtained without use of a KBr matrix), was assigned to the vibrations of ions compensating the negative charge of the clays. When KBr was used as a diluting matrix, the υ4 band was located at 1400 and/or 1440 cm-1. The band at 1400 cm-1, related to NH4Br, originated from the replacement of in the clay by K+ from the KBr. For swelling clay minerals this band indicates that layers have permanent low charge density and/or variable charge. For non-swelling clay minerals, the 1400 cm-1 band characterizes the presence of variable charges only. The υ4 band at 1440 cm-1 suggests that in the clay was not replaced by K+ from KBr and remains in the interlayer space of the clay minerals. This absorption is due to compensating only permanent charge in the interlayers, or part of the interlayers with a high charge density. The presence of both bands at 1400 cm-1 and 1440 cm-1 in the IR spectrum suggests that the clays studied have a heterogeneous interlayer charge.

Type
Research Article
Information
Clay Minerals , Volume 34 , Issue 4 , December 1999 , pp. 543 - 549
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1999

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References

Ben Hadj-Amara, A., Besson, G. & Tchoubar, C. (1987) Caractéristiques structurales d'une smectite dioctaédrique en fonction de Pordre-désordre dans la distribution des charges électriques: I. Etudes des réflexions 00l. Clay Miner. 22, 305–318.Google Scholar
Bergaoui, L., Lambert, J.F., Vicente-Rodriguez, M.A., Michot LJ. & Villieras, F. (1995) Porosity of synthetic saponites with variable layer charge pillared by Al13 polycations. Langmuir, 11, 2849–2852.Google Scholar
Chourabi, B. & Fripiat, J.J. (1981) Determination of tetrahedral substitutions and interlayer surface heterogeneity from vibrational spectra of ammonium in smectites. Clays Clay Miner. 29, 260–268.Google Scholar
Čičel, B. & Machajdík, D. (1981) Potassium- and ammonium-treated montmorillonites. I. Interstratified structures with ethylene glycol and water. Clays Clay Miner. 29, 40–46.Google Scholar
Ferriso, C.C. & Hornig, D.F. (1959) Absolute infrared intensities of the ammonium ion in crystals. J. Chem. Phys. 32, 1240–1245.Google Scholar
Fialips, C.I., Petit, S., Decarreau, A. & Beaufort, D. (1999) Influence of synthesis pH on kaolinite “crystallinity” and surface properties. Clays Clay Miner, (in press).Google Scholar
Güven, N. (1992) Molecular aspects of clay-water interactions. Pp. 2—79 in: Clay-water Interface and its Rheological Applications, (Güven, N. & Pollastro, R.M., editors). The Clay Minerals Society, Boulder, Colorado.Google Scholar
Jaynes, W.F. & Bigham, J.M. (1987) Charge reduction, octahedral charge, and lithium retention in heated, Li-saturated smectites. Clays Clay Miner. 35, 440–448.Google Scholar
Lindgreen, H. (1994) Ammonium fixation during illitesmectite diagenesis in upper Jurassic shale, North Sea. Clay Miner. 29, 527–537.Google Scholar
Mermut, A.R. (1994) Problems associated with layer charge characterization of 2:1 phyllosilicates. Pp. 106—122 in: Layer Charge Characteristics of 2:1 Silicate Clay Minerals, (Mermut, A.R., editor). CMS Workshop Lectures, 6, The Clay Minerals Society, Boulder, CO.Google Scholar
Mortland, M.M. & Raman, K.V. (1968) Surface acidity of smectites in relation to hydration, exchangeable cation, and structure. Clays Clay Miner. 16, 393–398.CrossRefGoogle Scholar
Mortland, M.M., Fripiat, J.J., Chaussidon, J. & Uytterhoeven, J. (1962) Interaction between ammo ma and the expanding lattices of montmorillonite and vermiculite. J. Phys. Chem. 67, 248–258.CrossRefGoogle Scholar
Nakamoto, K. (1963) Infrared Spectra of Inorganic and Coordination Compounds. 2nd ed., Wiley, New York.Google Scholar
Pelletier, M., Michot, L.J., Barres, O., Humbert, B., Petit, S. & Robert, J.-L. (1999) Influence of KBr conditioning on the IR hydroxyl-stretching region of saponites. Clay Miner. 34, 439–445.Google Scholar
Petit, S., Righi, D., Madejova, J. & Decarreau, A. (1998) Layer charge estimation of smectites using infrared spectroscopy. Clay Miner. 33, 579–591.Google Scholar
Righi, D., Terribile, F. & Petit, S. (1998) Pedogenic formation of high-charge beidellite in a vertisol of Sardinia (Italy). Clays Clay Miner. 46, 167–177.Google Scholar
Ryskin, Y.I. (1974) The vibrations of protons in minerals: hydroxyl, water and ammonium. Pp. 137—181 in: The Infrared Spectra of Minerals, (Farmer, V.C., editor). Monograph No. 4, Mineralogical Society, London.Google Scholar
Sawhney, B.L. (1972) Selective sorption and fixation of cations by clay minerals: a review. Clays Clay Miner. 20, 93–100.Google Scholar
Shen, S., Tu S-I. & Doral Kemper, W. (1997) Equilibrium and kinetic study of ammonium adsorption and fixation in sodium-treated vermiculite. Soil Sci. Soc. Am. J. 61, 1611–1618.Google Scholar
Sherman, W.F. & Smulovitch, P.P. (1970) Pressure scanned Fermi resonance in the spectrum of NH4 isolated in CsBr. J. Chem. Phys. 52, 5187–5193.Google Scholar
Srasra, E., Bergaya, F. & Fripiat JJ. (1994) Infrared spectroscopy study of tetrahedral and octahedral substitutions in an interstratified illite-smectite clay. Clays Clay Miner. 42, 237–241.Google Scholar
Šucha, V., Elsass, F., Eberl, D.D., Kuchta, L., Madejová, J., Gates, W.P. & Komadel, P. (1998) Hydrothermal synthesis of ammonium illite. Am. Miner. 83, 58–67.Google Scholar
Vedder, W. (1965) Ammonium in muscovite. Geochim. Cosmochim. Ada 29, 221–228.Google Scholar