A model for the mechanism of Fe3+ to Fe2+ reduction in dioctahedral smectites

Clays and Clay Minerals

Volumn 48, Issue 2, 2000, Pages 185-195

  Drits, V A ^a,b   Manceau, A ^a  

^a CNRS   (France)

^b GEOLOGICAL INSTITUTE   (Russian Federation)

Author keywords

CMS source clay SWa 1; Dioctahedral smectite; Iron reduction; Structural formula

Indexed keywords

HYDROGEN; MATHEMATICAL MODELS; POSITIVE IONS; PROTONS; REDUCTION; SODIUM; SOLUTIONS; SORPTION;

DIOCTAHEDRAL SMECTITE; IRON REDUCTION;

IRON;

REDOX CONDITIONS; REDUCTION; SMECTITE;

EID: 0034022222     PISSN: 00098604     EISSN: None     Source Type: Journal    
DOI: 10.1346/CCMN.2000.0480204     Document Type: Article

References (33)

1. Chen, S.Z., Low, P.F., and Roth, C.B. (1987) Relation between potassium fixation and the oxidation state of octahedral iron. Soil Science Society of America Journal, 51, 82-86.
2. Drits, V.A., Plançon, A., Sakharov, B.A., Besson, G., Tsipursky, S.I., and Tchoubar, C. (1984) Diffraction effects calculated for structural models of K-saturated montmorillonite containing different types of defects. Clay Minerals, 19, 541-561.
3. Drits, V.A., Weber, A.I., Salyn, A.L., and Tsipursky, S.I. (1993) X-ray identification of one-layer illite varieties: Application to the study of illites around uranium deposits of Canada. Clays and Clay Minerals, 41, 389-398.
4. Drits, V.A., Besson, G., and Muller, F. (1995) An improved model for structural transformation of heat-treated aluminous dioctahedral 2:1 layer silicates. Clays and Clay Minerals, 43, 718-731.
5. Dunitz, J.D. (1956) The structure of sodium dithionite and the nature of the dithionite ion. Acta Crystallographica, 9, 579-586.
6. Egashira, K. and Ohtsubo, M. (1983) Swelling and mineralogy of smectites in paddy soils derived from marine alluvium, Japan. Geoderma, 29, 119-127.
7. 2+ in clay minerals. Clays and Clay Minerals, 44, 599-608.
8. Gan, H., Stucki, J.W., and Bailey, G.W. (1992) Reduction of structural iron in ferruginous smectites by free radicals. Clays and Clay Minerals, 40, 659-665.
9. Gates, W.P., Jaunet, A.M., Tessier, D., Cole, M.A., Wilkinson, H.T., and Stucki, J.W. (1998) Swelling and texture of iron-bearing smectites reduced by bacteria. Clays and Clay Minerals, 46, 487-497.
10. Güven, N. (1991) Smectites. In Hydrous Phyllosilicates (Exclusive of Micas), Reviews in Mineralogy, Volume 19, S.W. Bailey, ed., Mineralogical Society of America, Washington, D.C., 497-560.
11. Heller-Kallai, L. (1997) Reduction and reoxidation of nontronite. The data reassessed. Clays and Clay Minerals, 45, 476-479.
12. Khaled, E.M. and Stucki, J.W. (1991) Effect of iron oxidation state on cation fixation in smectites. Soil Science Society of America Journal, 55, 550-554.
13. Lear, P.R. and Stucki, J.W. (1985) The role of structural hydrogen in the reduction and reoxidation of iron in nontronite. Clays and Clay Minerals, 33, 539-545.
14. Lear, P.R. and Stucki, J.W. (1989) Effects of iron oxidation state on the specific area of nontronites. Clays and Clay Minerals, 37, 547-552.
15. Low, P.F., Roth, C.B., and Stucki, J.W. (1983) System and method for rapid beneficiation of bentonite clay. U.S. Patent 4, 411,530.
16. Lynn, S., Rinker, R.G., and Corcoran, W.H. (1964) The monomerization rate of dithionite ion in aqueous solution. Journal of Physical Chemistry, 68, 2363.
17. Manceau, A., Drits, V.A., Lanson, B., Chateigner, D., Wu, J., Huo, D.F., Gates, W.P., and Stucki, J.W. (2000) Oxidation-reduction mechanism of iron in dioctahedral smectites. 2. Structural chemistry of reduced Garfield nontronite. American Mineralogist, 85, 153-172.
18. 3+-rich dioctahedral micas. Part I: Characterization of the structural transformation. Clay Minerals, in press.
19. 2, radical ion in aqueous solutions of sodium dithionite. Journal of Physical Chemistry, 63, 302.
20. Roth, C.B. and Tullock, R.J. (1973) Deprotonation of nontronite resulting from chemical reduction of structural ferric iron. In Proceeding of the International Clay Conference, J.M. Serratosa, ed., Division Ciencas C.S.I.C., Madrid, 107-114.
21. 3+ in dioctahedral smectite. 1 : Reduction with hydrazine and dithionite. Clays and Clay Minerals, 24, 271-282.
22. Russell, J.D., Goodman, B.A., and Fraser, A.R. (1979) Infrared and Mössbauer studies of reduced nontronites. Clays and Clay Minerals, 27, 63-71.
23. Shen, S., Stucki, J.W., and Boast, C.W. (1992) Effects of structural iron reduction on the hydraulic conductivity of Na-smectite. Clays and Clay Minerals, 40, 381-386.
24. Stucki, J.W. (1988) Structural iron in smectites. In Iron in Soils and Clay Minerals. J.W. Stucki, B.A. Goodman, and U. Schwertmann, eds., Riedel Publishing Company, Dordrecht, 625-676.
25. Stucki, J.W. and Roth, C.B. (1976) Interpretation of infrared spectra of oxidized and reduced nontronite. Clays and Clay Minerals, 24, 293-296.
26. Stucki, J.W. and Roth, C.B. (1977) Oxidation-reduction mechanism for structural iron in nontronite. Soil Science Society of America Journal, 41, 808-814.
27. Stucki, J.W. and Tessier, D. (1991) Effects of iron oxidation state on the structural order of Na-nontronite. Clays and Clay Minerals, 39, 137-143.
28. Stucki, J.W., Roth, C.B., and Baitinger, W.E. (1976) Analysis of iron-bearing clay minerals by electron spectroscopy for chemical analysis (ESCA). Clays and Clay Minerals, 24, 289-292.
29. Stucki, J.W., Golden, D.C., and Roth, C.B. (1984) Effects of reduction and reoxidation of structural iron on the surface charge and dissolution of dioctahedral smectites. Clays and Clay Minerals, 32, 350-356.
30. 3+ in smectites. Soil Science Society of America Journal, 51, 1663-1665.
31. Stucki, J.W., Bailey, G.W., and Gan, H. (1996) Oxidation-reduction mechanisms in iron-bearing phyllosilicates. Applied Clay Science, 10, 417-430.
32. Tsipursky, S.I. and Drits, V.A. (1984) The distribution of cations in the 2:1 layers of dioctahedral smectites studied by oblique-texture electron diffraction. Clay Minerals, 19, 177-193.
33. 1+-containing 2:1 dioctahedral phyllosilicates in the course of dehydroxylation. In European Clay Conference, J. Konta, ed., Univerzita Karlova Praha, Praha, 564-577.