Chemical composition and surface charge properties of montmorillonite

Abstract

The effects of the cell parameter and chemical composition on the surface charge properties of five kinds of different colour montmorillonites were studied. The results indicate that the surface isoelectric point(IEP) of the montmorillonite shows positive correlation with the mass fractions of Fe₂O₃ and K₂O, but it has little relation to the mass fractions of other chemical compositions. At around pH=6.8, the surface zeta potential of the montmorillonite shows the negative relationship with the mass fractions of Fe₂O₃ and MgO, but it does not linearly correlate to the mass fractions of other chemical compositions. Cell parameter(b₀) of the montmorillonite expresses negative linear relationship with mass fractions of K₂O and Na₂O, so does c₀sin β with mass fractions of SiO₂ and Fe₂O₃. And there is no specific relationship between b₀ and IEP of different montmorillonites, but there is positive correlation between c₀sinβ and IEP of different montmorillonite samples.

Keywords

surface charge property / zeta potential / cell parameter / montmorillonite

References

[1] LagalyG., ZiesmerS.. Colloid chemistry of clay minerals: The coagulation of montmorillonite dispersions[J]. Advances in Colloid and Interface Science, 2003, 100/102: 105-128

[2] YalcinB., CakmakM.. The role of plasticizer on the exfoliation and dispersion and fracture behavior of clay particles in PVC matrix: A comprehensive morphological study[J]. Polymer, 2004, 45(19): 6623-6638

[3] AvenaiM. J., De PauliC. P.. Proton adsorption and electrokinetics of an argentinean montmorillonite[J]. Journal of Colloid and Interface Science, 1998, 202(1): 195-204

[4] DucM., GaboriaudF., ThomasF.. Sensitivity of the acid-base properties of clays to the methods of preparation and measurement[J]. Journal of Colloid and Interface Science, 2005, 289(1): 139-147

[5] SondiI., BiscanJ., PravdicV.. Electrokinetics of pure clay minerals revisited[J]. Journal of Colloid and Interface Science, 1996, 178(2): 514-522

[6] OhkuboT., SaitoK., KanehashiK., IkedaY.. A study on hydration behaviors of interlayer cations in montmorillonite by solid state NMR[J]. Science and Technology of Advanced Materials, 2004, 5(5/6): 693-696

[7] DahnR., ScheideggerA. M., ManceauA., CurtiE., BaeyensB., BradburyM. H., ChateignerD.. The uptake on montmorillonite: A powder and polarized extended X-ray absorption fine structure(EXAFS) study[J]. Journal of Colloid and Interface Science, 2002, 249(1): 8-21

[8] BoonfuengT., AxeL., XuY.. Properties and structure of manganese oxide-coated clay[J]. Journal of Colloid and Interface Science, 2005, 281(1): 80-92

[9] WangC.-c., JuangL. C., LeeC. K., HsuT. C., LeeJ. F., ChaoH.-ping.. Effects of exchanged surfactant cations on the pore structure and adsorption characteristics of montmorillonite[J]. Journal of Colloid and Interface Science, 2004, 280(1): 27-35

[10] StrawnlD. G., SparksD. L.. The use of XAFS to distinguish between inner-and outer-spherelead adsorption complexes on montmorillonite[J]. Journal of Colloid and Interface Science, 1999, 216(2): 257-269

[11] DuránJ. D. G., Ramos-tejadaM. M., ArroyoF. J.. Rheological and electrokinetic properties of sodium montmorillonite suspensions[J]. Journal of Colloid and Interface Science, 2000, 229(1): 107-117

[12] HeathD., TadrosT. F.. Influence of pH, electrolyte, and poly(vinyl alcohol) addition on the rheological characteristics of aqueous dispersions of sodium montmorillonite[J]. Journal of Colloid and Interface Science, 1983, 93(2): 307-319

[13] HuY.-h., LiuX.-wen.. Chemical composition and surface property of kaolins[J]. Minerals Engineering, 2003, 16(11): 1279-1284

[14] NewmanA. C. D.Chemistry of clays and clay minerals[M], 1987, London, Longman Group UK Limited

[15] GuG.-h., HuY.-h., QiuG.-z., WangH., WangD.-zuo.. Potential control flotation of galena in strong alkaline media [J]. Journal of Central South University of Technology, 2002, 9(1): 16-20

[16] LiuX.-wen.Crystal structure and surface property of diaspore and phyllosilicate minerals[D], 2003, Changsha, Central South University of Technology

[17] JiangG.-l., ZhangP.-ping.Processing and application of bentonnite [M], 2005, Beijing, Chemical Industry Press