Skip to main content Accessibility help

Preparation and infrared spectroscopic characterization of reduced-charge montmorillonite with various Li contents

  • J. Madejová (a1), J. Bujdák (a1), W. P. Gates (a2) and P. Komadel (a1)


A series of reduced-charge montmorillonites (RCMs) was prepared from Li-montmorillonite from Jelšový Potok (Slovakia) by heating at various temperatures (105–210°C for 24 h. The amount of fixed Li, 0.09–0.67 per O20(OH)4, increased with increasing temperature, confirming preparation of a set of samples of variable layer charge from the same parent Li-montmorillonite by varying only the preparation temperature. Infrared spectroscopy revealed that Li was trapped in the hexagonal cavities of the tetrahedral sheet at all temperatures. Partial deprotonation of the samples, reflected in the decrease of the intensities of the OH-bending bands, was observed after treatments above 120°C. Analysis of the OH-stretching region showed Li in the previously vacant octahedra in the samples heated above 150°C. Weak inflections near 660 and 720 cm−1 confirmed development of local trioctahedral character of octahedral cations coordinated with OH groups in the sample heated at 210°C. Gradual decrease of the layer charge due to Li fixation led to a shift of the Si-O stretching band to higher frequencies and to the appearance of new, pyrophyllite-like bands at 1120 and 419 cm−1.



Hide All
Alvero, R., Alba, M.D., Castro, M.A. & Trillo, J.M. (1994) Reversible migration of lithium in montmorillonite. J. Phys. Chem. 98, 78487853.
Bookin, A.S. & Drits, V.A. (1982) Factors affecting orientation of OH-vectors in micas. Clays Clay Miner. 30, 415421.
Bujdák, J., Petrovićová, I. & Slosiariková, H. (1992) Study of water - reduced charge montmorillonite system. Geol. Carpath., Ser. Clays, 43, 109111.
Calvet, R. & Prost, R. (1971) Cation migration into empty octahedral sites and surface properties of clays. Clays Clay Miner. 19, 175186.
Čičel, B. & Komadel, P. (1994) Structural formulae of layer silicates. Pp. 114–136 in: Quantitative Methods in Soil Mineralogy (Amonette, J.E. & Zelazny, L.W., editors). SSSA Misc. Publ., SSSA, Madison, Wisconsin.
Čičel, B., Komadel, P., Bednáriková, E. & Madejová, J. (1992) Mineralogical composition and distribution of Si, A1, Fe, Mg and Ca in the fine fractions of some Czech and Slovak bentonites. Geol. Carpath., Ser. Clays 43, 37 .
Farmer, V.C. (1974) Layer silicates. Pp. 331-363 in: Infrared Spectra of Minerals (Farmer, V.C., editor). Mineralogical Society, London.
Greene-Kelly, R. (1955) Dehydration of montmorillonite minerals. Mineral. Mag. 30, 604–615.
Hofmann, U. & Klemen, R. (1950) Verlust der Austauschfahigkeit yon Lithiuminonen an Bentonit durch Erhitzung. Z. Anorg. Allg. Chem. 262, 9599.
Jaynes, W.F. & Bigham, J.M. (1987) Charge reduction, octahedral charge, and lithium retention in heated, Li-saturated smectites. Clays Clay Miner. 35, 440448.
Komadel, P., Schmidt, D., MADEJOVá J. & Čičel, B. (1990) Alteration of smectites by treatments with hydrochloric acid and sodium carbonate solutions. Appl. Clay Sci. 5, 113122.
Komadel, P., BujdáK, J., MADEJOVá J., Sucha, V. & Elsass, F. (1996) Effect of non-swelling layers on the dissolution of reduced-charge montmorillonite in hydrochloric acid. Clay Miner. (in press).
Luca, V. & Cardile, C.M. (1988) Thermally induced cation migration in Na and Li montmorillonite. Phys. Chem. Miner. 16, 98103.
Madejová, J., Komadel, P. & Čičel, B. (1994) Infrared study of octahedrat site populations in smeetites. Clay Miner. 29, 319326.
Madejová, J., Putyera, K. & Čičel, B. (1992) Proportion of central atoms in octahedra of smectites calculated from infrared spectra. Geol. Carpath., Ser. Clays 43, 117120.
Moenre, H.H.W. (1974) Silica, the three-dimensional silicates, borosilicates and beryllium silicates. Pp. 365-382 in: Infrared Spectra of Minerals (Farmer, V.C., editor). Mineralogical Society, London.
Pitha, J. & JONES R,N. (1966) A comparison of optimalization methods for fitting curves to infrared band envelopes. Can. J. Chem. 44, 30313050.
Russell, J.D. & Farmer, V.C. (1964) Infrared spectroscopic study of the dehydration of montmorillonite and saponite. Clay Miner. Bull. 5, 443–464.
Russell, J.D. & Fraser, A.R. (1971) IR spectroscopic evidence for interaction between hydronium ions and lattice OH groups in montmorillonite. Clays Clay Miner. 19, 5559.
Russell, J.D. & Fraser, A.R. (1994) Infrared methods. Pp. 11–67 in: Clay Mineralogy: Spectroscopic and Chemical Determinative Methods (Wilson, M.J., editor). Chapman & Hall, London.
Russell, J.D., Goodman, B.A. & Fraser, A.R. (1979) Infrared and M6ssbauer studies of reduced nontronites. Clays Clay Miner. 27, 6371.
Samajova, E., Kraus, I. & Lajcakova, A. (1992) Diagenetic alteration of Miocene acidic vitric tuffs of the Jastraba formation (Kremnické vrchy Mts., Western Carpathians). Geol. Carpath., Ser. Clays 43, 2126.
Schultz, L.G. (1969) Lithium and potassium absorption, dehydroxylation temperature and structural water content in aluminous smectites. Clays Clay Miner. 17, 115149.
Slonimskaya, M.V., Besson, G., Dainyak, L.G., Tchoubar, C. & Drits, V.A. (1986) Interpretation of the IR spectra of celadonites and glauconites in the region of OH-stretching frequencies. Clay Miner. 21, 377388.
Sposito, G. & Anderson, D.M. (1975) Infrared study of exchangeable cation hydration in montmorillonite. Soil Sci. Amer. Proc. 39, 10951099.
Sposlvo, G., Prosy, R. & Gaultier, J.P. (1983) Infrared spectroscopic study of adsorbed water on reducedcharge montmorillonites. Clays Clay Miner. 31, 916.
Srasra, E., Bergaya, F. & Fripiat, J.J. (1994) Infrared spectroscopy study of tetrahedral and octahedral substitutions in an interstratified illite-smectite clay. Clays Clay Miner. 42, 237241.
Sucha, V., Kraus, I., Mosser, C., Hroncova, Z., Soboleva, K.A. & Siranova, V. (1992) Mixed-layer illite/smectite from the Dolna Ves hydrothermal deposit, the Western Carpathians Kremnica Mts. Geol. Carpath., Ser. Clays 43, 1319.
Tettenhorst, R. (1962) Cation migration in montmorillonites. Am. Miner. 47, 769773.
Williams, J., Purnell, J.H. & Ballantine, J.A. (1991) The mechanism of layer charge reduction and regeneration in Li+ exchanged montmorillonite. Catal. Lett. 9, 115120.

Preparation and infrared spectroscopic characterization of reduced-charge montmorillonite with various Li contents

  • J. Madejová (a1), J. Bujdák (a1), W. P. Gates (a2) and P. Komadel (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed