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Crystal Chemistry of Ion-Exchanged Forms of Zorite, a Natural Analogue of the ETS-4 Titanosilicate Material

Abstract

Titanosilicates have important applications in various areas of technology such as catalysis, gas separation, energy storage, optoelectronics, radioactive waste management, etc. Many of these materials are known as minerals, e.g. zorite Na6[Ti(Ti,Nb)4(Si6O17)2(O,OH)5].nH2O (n=10–11), a natural analogue of ETS-4 (Engelhard Titanium Silicate-4). The modified form of ETS-4, CTS-1 (contracted titanosilicate-1), is used for separation of mixtures of gases with similar molecular diameters, e.g. N2/O2 and CO/H2. Ba-exchanged ETS-4 is used for separation of mixtures of N2 and CH4. Another area of applications of ETS-4 and CTS-1 is purification of water polluted by organic contaminants. Natural Ca-bearing analogues of zorite are chivruaiite Ca4[(Ti,Nb)5(Si6O17)2|(OH,O)5].13-14H2O, and haineaultite, (Na,Ca)5Ca[(Ti,Nb)5(Si,S)12O34 (OH,F)8].5H2O.

Keywords

  • Natural Analogue
  • White Vertex
  • Cation Exchange Reaction
  • SiO4 Tetrahedron
  • Radioactive Waste Management

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Acknowledgements

This work was supported by the Russian Federal Programme ‘Scientific and Education Cadres of Innovative Russia’ (state contract no. 02.740.11.0326) and President of Russian Federation grant for young doctors of sciences (to SVK, grant no. MD 407.2009.5).

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Correspondence to Dar’ya V. Spiridonova .

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Spiridonova, D.V., Krivovichev, S.V., Britvin, S.N., Yakovenchuk, V.N. (2011). Crystal Chemistry of Ion-Exchanged Forms of Zorite, a Natural Analogue of the ETS-4 Titanosilicate Material. In: Krivovichev, S. (eds) Minerals as Advanced Materials II. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20018-2_19

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