Hostname: page-component-848d4c4894-x24gv Total loading time: 0 Render date: 2024-05-21T02:19:56.329Z Has data issue: false hasContentIssue false
  • English
  • Français

Tin-Clay Complexes: A Mössbauer Study

Published online by Cambridge University Press:  28 February 2024

D. Petridis  and
T. Bakas
D. Petridis
Affiliation:
Institute of Materials Science, N.R.C.P.S. “Demokritos”, GR-153 10, Athens, Greece
T. Bakas
Affiliation:
Physics Department, University of Ioannina, GR-451 10, Ioannina, Greece
Get access Rights & Permissions [Opens in a new window]

Abstract

Divalent tin has been intercalated into montmorillonite by reacting partially hydrolyzed solutions of SnCl2 under aerobic conditions at pH = 2.8 with aqueous dispersions of the smectite mineral. The precursor tin solution contains mainly the cationic trimeric ion Sn3(OH)42+, which is shown to take part in the exchange reactions with the surface cations of the mineral. Variable temperature Mössbauer spectroscopy was used in order to: 1) directly probe changes in the oxidation state and coordination environment of Sn2+ in the process of intercalation; 2) examine the nature of tin atoms on the external surfaces and in the interlayer space of the clay platelets; and 3) study the dynamics of motion of tin atoms on the clay surfaces.

The main conclusion from these studies is that about 75% of the Sn2+ ions undergo extensive oxidation to the +4 state with concomitant hydrolysis and condensation that lead to the precipitation of SnO2 on the external surfaces of the clay. The rest of the Sn2+ ions are introduced into the lamellar zone, as evidenced by the detailed Mössbauer analysis of the dynamics of motion of tin atoms on the clay surfaces.

Keywords

ClayMontmorilloniteMössbauerIntercalation
Type
Research Article
Information
Clays and Clay Minerals , Volume 45 , Issue 1 , February 1997 , pp. 73 - 76
Copyright
Copyright © 1997, The Clay Minerals Society

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

Abel, E.W.. 1973. Tin. In: Bailar, J.C., Emeleus, H.J., Nyholm, R., Trotman-Dickenson, A.F., editors. Comprehensive inorganic chemistry. Oxford: Pergamon Pr. p 43–104.CrossRefGoogle Scholar
Breen, C., Molloy, K.C. and Quill, K.. 1992. Mössbauer spectroscopic and thermogravimetric studies of tin-clay complexes. Clay Miner 27: 445–455.CrossRefGoogle Scholar
Collins, G.S., Kachnowski, T., Benczer-Koller, N. and Pasternak, M.. 1979. Application of the Mössbauer effect to the characterization of an amorphous tinoxide system. Phys Rev B19: 1369–1373.CrossRefGoogle Scholar
Davies, C.G. and Donaldson, J.D.. 1968. The Mössbauer effect in tin(II) compounds, Part III. The spectra of Trihydroxostannates(II) and of basic tin(II) salts. J Chem Soc (A): 946–948.Google Scholar
Diamant, A., Pasternak, M. and Banin, A.. 1982. Characterization of absorbed iron in montmorillonite by Mössbauer spectroscopy. Clays Clay Miner 30: 63–66.CrossRefGoogle Scholar
Donaldson, J.D. and Moser, W.. 1961. Basic tin(II) nitrate. J Chem Soc 1996–2005.CrossRefGoogle Scholar
Donaldson, J.D.. 1967. The chemistry of divalent tin. In: Cotton, F.A., editor. Progress in inorganic chemistry. NY: Interscience. p 287–356.CrossRefGoogle Scholar
Gerstl, Z. and Banin, A.. 1980. Fe2+—Fe3+ transformations in clay and resin ion-exchange systems. Clays Clay Miner 5: 335–345.CrossRefGoogle Scholar
Harrison, P.G., Phillips, R.C. and Thornton, E.W.. 1977. Temperature dependence of the recoil-free fraction as a probe of the lattice structure of tin compounds. J Chem Soc, Chem Commun 603–604.Google Scholar
Helsen, J.A. and Goodman, B.A.. 1983. Characterization of iron(II) and iron(III)-exchanged montmorillonite using Mössbauer effect. Clay Miner 18: 117–125.CrossRefGoogle Scholar
Molloy, K.C. and Quill, K.. 1985. Organotin biocides, Part 2. Variable temperature Sn119 Mössbauer study of phenyl and cycloexyltin compounds. J Chem Soc, Dalton Trans 1417–1423.Google Scholar
Simopoulos, A., Petridis, D., Kostikas, A. and Gangas, N-HJ. 1988. Intercalation of dimethyl tin(IV) cationic complexes in montmorillonite. Hyperfine Interact 41: 843–848.CrossRefGoogle Scholar