SYNTHESIS OF TITANOSILICATE ADSORBENTS OF MCM-41 TYPE USING SUPRAMOLECULAR TEMPLATE
https://doi.org/10.29235/1561-8331-2018-54-1-16-23
Abstract
Low-temperature isotherms of nitrogen adsorption-desorption of titanosilicate adsorbents deposited on supramolecular template using titanium sulphate and sodium silicate with module equal to 1 or 3 were measured. The isotherms measured belong to Types IV (a) and IV (b) adsorption isotherms by IUPAC classification. Titanosilicate materials with isothermal curves of such type can be offered as homogeneous adsorbents with mesoporous MCM-41 type of constituent element ordering, which is characteristic of mesoporous adsorbents with hexagonal packing of homogeneous cylindrical capillary. The characterization of titanosilicate samples by the analysis of capillary and condensation properties allows us to identify secondary and tertiary slit mesopores in them.
Keywords
Supporting agencies: This work has been performed with a financial support of Belarusian Republican Foundation for Fundamental Research (project Х16РА-017).
About the Authors
T. F. Kouznetsova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Ph. D. (Chemistry), Associate Professor, Senior researcher
9/1, Surganov Str., 220072, Minsk, E-mail: kouzn@igic.bas-net.by
J. D. Sauka
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Junior researcher
9/1, Surganov Str., 220072, Minsk
A. I. Ivanets
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
D. Sc. (Chemistry), Associate Professor, Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
References
1. Corma A., Navarro M. T., Perez Pariente J. Synthesis of an Ultralarge Pore Titanium Silicate Isomorphous tо MCM– 41 and its Application as a Catalyst for Selective Oxidation of Hydrocarbons. Journal of the Chemical Society, Chemical Communications, 1994, no. 2, pp. 147–148. Doi: 10.1039/C39940000147
2. Sing K. S. W., Everett D. H., Hall R. A. W. et al. Reporting Physisorption Data for Gas/Solid Systems with Special Reference to the Determination of Surface Area and Porosity (Recommendations 1984). Pure and Applied Chemistry, 1985, vol. 57, no. 4, pp. 603–619. Doi: 10.1351/pac198254112201
3. Thommes M., Kaneko K., Neimark A. V., Olivier J. P., Rodriguez-Reinoso F., Rouquerol J., Sing K. S. W. Physisorption of Gases, with Special Reference to the Evaluation of Surface Area and Pore Size Distribution (IUPAC Technical Report). Pure and Applied Chemistry, 2015, vol. 87, no. 9–10, pp. 1051–1069. Doi: 10.1515/pac–2014–1117
4. Brunauer S., Emmett P. H. The Use of van der Waals Adsorption Isotherms in Determining the Surface Area of Iron Synthetic Ammonia Catalysts. Journal of the American Chemical Society, 1935, vol. 57, no. 9, pp. 1754–1755. Doi: 10.1021/ ja01312a503
5. Emmett P. H., Brunauer S. The Use of Below Temperature van der Waals Adsorption Isotherms in Determining the Surface Area of Iron Synthetic Ammonia Catalysis Journal of the American Chemical Society, 1937, vol. 59, no. 8, pp. 1553–1590. Doi: 10.1021/ja01287a041
6. Gregg S. J., Sing K. S. W. Adsorption, Surface Area and Porosity. London: Academic Press, 1982. 304 p.
7. Branton P. J., Hall P. G., Treguer M., Sing K. S. W. Adsorption of Carbon Dioxide, Sulphurdioxide and Water Vapour by MCM-41, a Model Mesoporous Adsorbent. Journal of the Chemical Society, Faraday Transactions, 1995, vol. 91, no. 13, pp. 2041–2043. Doi: 10.1039/FT9959102041
8. Kuznetsova T. F., Ivanets A. I., Katsoshvili L. L. Formation of Titanosilicate Precursors of an Active Adsorption Phase. Russian Journal of Physical Chemistry A, 2017, Vol. 91, no. 4, pp. 744–748. Doi: 10.1134/s0036024417040136
9. Roque-Malherbe R. M. A. Adsorption and Diffusion in Nanoporous Materials. Boca Raton: CRC Press, 2007. 269 p. Doi: 10.1201/9781420046762
10. Olivier J. P. Modeling Physical Adsorption on Porous and Nonporous Solids Using Density Functional Theory. Journal of Porous Materials, 1995, vol. 3, no. 1, pp. 9–17. Doi: 10.1007/BF00486565. 11. Barrett E. P., Joyner L. G., Halenda P. P. The determination of pore volume and area distributions in porous substances. I. Computations from nitrogen isotherms. Journal of the American Chemical Society, 1951, vol. 73, no. 1, pp. 373–380. Doi: 10.1021/ja01145a126
11. Lin H. P., Mou C.-Y. Structural and Morphological Control of Cationic Surfactant-Templated Mesoporous Silica. Accounts of Chemical Research, 2002, vol. 35, no. 11, pp. 927–935. Doi: 10.1021/ar000074f
12. Iler R. K. The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Properties and Biochemistry of Silica. New-York, Wiley, 1978. 896 p.
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