Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-26T08:26:31.140Z Has data issue: false hasContentIssue false
  • English
  • Français

X-ray diffraction, infrared and TGA/DTG analysis of hydrated nacrite

Published online by Cambridge University Press:  09 July 2018

A. Ben Haj Amara
A. Ben Haj Amara*
Affiliation:
L.P.M., Faculté des Sciences de Bizerte, 7021 Zarzouna, Bizerte, Tunisia
Get access Rights & Permissions [Opens in a new window]

Abstract

An homogenous 8.4 Å hydrate was obtained after washing intercalated KAc- nacrite. X-ray diffraction analysis based on comparison of the experimental and calculated profiles enabled the amount of water (one molecule per Si2Al2O5(OH)4) and the z coordinate along c* (6.5 Å) to be determined. The hydration state was accompanied by a decrease in the coherent domain along c* in the order nacrite > KAc-nacrite > H2O-nacrite. The IR spectrum of the hydrated nacrite showed an evolution of the structure with a shift of ν(OH) from 3702, 3649 and 3630 cm−1 to 3690, 3641 and 3620 cm−1, respectively for the nacrite hydroxyls. The ν(OH) stretching bands of the interlayer water appeared at 3602 and 3545 cm−1 and their bending band at 1655 cm−1. The TGA/DTG analysis of the air-dry hydrated nacrite showed a loss of water at 245°C the weight loss (1 molecule per Si2Al2O5(OH)4) corresponding to the interlamellar water, in agreement with that determined by XRD.

Type
Research Article
Information
Clay Minerals , Volume 32 , Issue 3 , September 1997 , pp. 463 - 470
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

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

Bellamy, L.J. & Owen, A. (1969) A simple relationship between the infrared stretching frequencies and the hydrogen bond distances in crystals. Spectrochim. Acta, 25, 329–333.Google Scholar
Ben Brahim, J., Armagan, N., Besson, G. & Tchoubar, C. (1983) X-ray diffraction studies on the arrangement of water molecules in a smectite. I- Homogeneous two-water-layer Na beidellite. J. Appl. Cryst. 16, 264–269.Google Scholar
Ben Haj Amara, A., Ben Brahim, J., Ben Ayed, N. & Ben Rhaiem, H. (1995) Présence de la nacrite dans des anciens gisements de Pb-Zn. Clay Miner. 31, 113–117.Google Scholar
Costanzo, P.M. & Giese, R.F. (1990) Ordered and disordered organic intercalates of 8.4-Å synthetically hydrated kaolinite. Clays Clay Miner. 38, 160–170.Google Scholar
Costanzo, P.M., Clemency C+V. & Giese, R.F. (1980) Low-temperature synthesis of a 10-Å hydrate of kaolinite using dimethylsulfoxide and ammonium fluoride. Clays Clay Miner. 28, 155–156.Google Scholar
Costanzo, P.M., Giese, R.F. & Clemency, C.V. (1984a) Synthesis of a 10-Å hydrated kaolinite. Clays Clay Miner. 32, 29–35.Google Scholar
Costanzo, P.M., Giese, R.F. & Lipsicas, M. (1984b) Static and dynamic structure water in hydrated kaolinite. IThe static structure. Clays Clay Miner. 32, 419–428.Google Scholar
Costanzo, P.M., Giese, R.F., Lipsicas, M. & Straley, C. (1982) Synthesis of a quasi-stable kaolinite and heat capacity of interlayer water. Nature 296, 549–551.Google Scholar
Deeds, C.T., van Olphen, H. & Bradley, W.F. (1966) Intersalation and interlayer hydration of minerals of the kaolinite group. Proc. Int. Clay Conf. Jerusalem, 2, 183–199.Google Scholar
Drits, V.A. & Tchoubar, C. (1990) The modelization method in the determination of the structural characteristics of some layer silicates: internal structure of the layers, nature and distribution of stacking faults. Pp. 233–303 in: X-ray Diffraction by Disordered Lamellar Structures, Springer-Verlag, Berlin.Google Scholar
Farmer, V.C. (1974) The layer silicates. Pp. 331-363 in: The Infrared Spectra ∼f Minerals (Farmer, V.C., editor). Mineralogical Society, London.Google Scholar
Hall, P.L., Harisson, R., Hayes, M.H.B. & Tuck, J.J. (1983) Particle orientation distributions and stacking arrangements in size-fractionated montmorillonite measured by neutron and X-ray diffraction. J. Chem. Soc. Faraday Trans. 79, 1687–1700.Google Scholar
Lippman, F. (1970) Functions describing preferred orientation in flat aggregates of flake-like clay minerals and in other axially symmetric fabrics. Contrib. Mineral. Pet. 25, 77–94.Google Scholar
Lipsicas, M., Straley, C., Costanzo, P.M. & Giese, R.F. (1985) Static and dynamic structure of water in hydrated kaolinite - Part. II. Dynamic structure. J. Colloid Interf Sci. 107, 221–230.Google Scholar
Raythatha, R. & Lipsicas, M. (1985) Mechanism of synthesis of 10-Å hydrated kaolinite. Clays Clay Miner. 33, 333–339.Google Scholar
Reynolds, R.C. (1968) The effect of particle size on apparent lattice spacings. Acta Cryst. 24, 319–320.Google Scholar
Reynolds, R.C. (1986) The Lorentz-polarization factor and preferred orientation in oriented clay aggregates. Clays Clay Miner. 34, 359–367.Google Scholar
Ross, M. (1968) X-ray diffraction effects by non ideal crystals of biotite, muscovite, montmorillonite. Z. Kristallogr. Kristallogem. 126, 80–97.Google Scholar
Tarasevich, Y.I. & Gribina, I.A. (1972) Infrared spectroscopic study of the state of water in halloysite. Kolloidnyi Zh. 34, 405–411 (in Russian).Google Scholar
Taylor, R.M. & Norrish, K. (1966) The measurement of orientation distribution and its application to quantitative X-ray diffraction analysis. Clay Miner. 6, 127–141.CrossRefGoogle Scholar
Tettenhorst, R. & Robertson, H.F. (1973) X-ray diffraction aspects of montmorillonite. Am. Miner. 58, 73–80.Google Scholar
Tunney, J. & Detellier, C. (1994) Preparation and characterization of an 8.4 A hydrate of kaolinite. Clays Clay Miner. 42, 473–476.Google Scholar
Wada, K. (1965) Intercalation of water in kaolin minerals. Am. Miner. 50, 924–941.Google Scholar
Wiewiora, A. & Brindley, G.W. (1969) Potassium acetate intercalation in kaolinite and its removal: effect of material characteristics. Proc. Int. Clay Conf Tokyo, 1, 723–733.Google Scholar
Zheng, H. & Bailey, S.W. (1994) Refinement of the nacrite structure. Clays Clay Miner. 42, 46–52.Google Scholar