Abstract
The conditions for the preparation of framework titanosilicates with zorite and ivanyukite structures were studied. The preparation of a gel-like precursor for hydrothermal synthesis is preferably performed from solutions. An excess amount of silicon relative to titanium(IV) and an alkaline medium with pH 10.5–12.5 provide oversaturation of the salt mass in the Na2O–K2O–TiO2–H2SO4–SiO2–H2O system. This makes it possible to regulate phase formation, ensuring the stability of the structure and surface properties of the final products. To inhibit titanium(IV) hydrolysis, the reduction Ti4+ → Ti3+ is performed. This technique leads to the formation of a monophase precipitate.
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REFERENCES
Young, D.A., US Patent 3329481, 1967.
Kuznicki, S.M., US Patent 4853202, 1989.
Kuznicki, S.M., Madon, R.J., Koermer, G.S., and Thrush, K.A., EP Patent 0405978, 1993.
Chapman, D.M. and Roe, A.L., Synthesis, characterization and crystal chemistry of microporous titanium-silicate materials, Zeolites, 1990, vol. 10, no. 8, pp. 730–737. https://doi.org/10.1016/0144-2449(90)90054-U
Spiridonova, D.V., Krivovichev, S.V., Britvin, S.N., and Yakovenchuk, V.N., Crystal chemistry of ion-exchanged forms of zorite, a natural analogue of the ETS-4 titanosilicate material, Minerals as Advanced Materials II, Krivovichev, S.V., Ed., Berlin: Springer-Verlag, 2012, pp. 199–204.
Wang, X. and Jacobson, A.J., Crystal structure of the microporous titanosilicate ETS-10 refined from single crystal X-ray diffraction data, Chem. Commun., 1999, no. 11, pp. 973–974. https://doi.org/10.1039/A901280J
Anderson, M.W., Terasaki, O., Ohsuna, T., Philippou, A., MacKay, S.P., Ferreira, A., Rocha, J., and Lidin, S., Structure of the microporous titanosilicate ETS-10, Nature, 1994, vol. 367, pp. 347–351. https://doi.org/10.1038/367347a0
Anderson, M.W., Terasaki, O., Ohsuna, T., Malley, P.J.O., Philippou, A., MacKay, S.P., Ferreira, A., Rocha, J., and Lidin, S., Microporous titanosilicate ETS-10: A structural survey, Philos. Mag. A, 1995, vol. 71, no. 5, pp. 813–841. https://doi.org/10.1080/01418639508243589
Ji, Z., Yilmaz, B., Warzywoda, J., and Sacco, A., Jr., Hydrothermal synthesis of titanosilicate ETS-10 using Ti(SO4)2, Microporous Mesoporous Mater., 2005, vol. 81, pp. 1–10. https://doi.org/10.1016/j.micromeso.2005.01.006
Nikolaev, A.I., Ivanyuk, G.Yu., Krivovichev, S.V., et al., Nanoporous titanosilicates: Crystal chemistry, conditions of localization in alkaline massifs, and prospects for synthesis, Vestn. Kol’sk. Nauchn. Tsentra Ross. Akad. Nauk, 2010, no. 3, pp. 51–62.
Spiridonova, D.V., Krivovichev, S.V., Yakovenchuk, V.N., and Pakhomovskii, Ya.A., Crystal structures of Rb- and Sr-substituted forms of ivanyukite-Na-T, Zap. Ross. Mineral.O-va., 2010, vol. 139, no. 5, pp. 79–88.
Gerasimova, L.G., Nikolaev, A.I., Shchukina, E.S., Maslova, M.V., and Selivanova, E.A., Framework titanosilicates: Synthesis and sorption properties, Perspekt. Mater., 2014, no. 3, pp. 21–27.
Shchukina, E.S., Gerasimova, L.G., and Okhrimenko, R.F., The technology of a complex salt of titanium(IV) and aluminum used as a leather tanning agent, Khim. Tekhnol., 2012, no. 5, pp. 263–267.
Lazareva, I.V., Gerasimova, L.G., Okhrimenko, R.F., and Maslova, M.V., Reaction of sphene with sulfuric acid solutions, Russ. J. Appl. Chem., 2006, vol. 79, no. 1, pp. 16–19. https://doi.org/10.1134/S1070427206010046
Gerasimova, L.G., Maslova, M.V., and Shchukina, E.S., The technology of sphene concentrate treatment to obtain titanium salts, Theor. Found. Chem. Eng., 2009, vol. 43, pp. 464–467. https://doi.org/10.1134/S0040579509040186
Yakovenchuk, V.N., Nikolaev, A.P., Selivanova, E.A., Pakhomovsky, Ya.A., Korchak, J.A., Spiridonova, D.V., Zalkind, O.A., and Krivovichev, S.V., Ivanyukite-Na-T, ivanyukite-Na-C, ivanyukite-K, and ivanyukite-Cu: New microporous titanosilicates from the Khibiny massif (Kola Peninsula, Russia) and crystal structure of ivanyukite-Na-T, Am. Mineral., 2009, vol. 94, no. 10, pp. 1450–1458. https://doi.org/10.2138/am.2009.3065
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Gerasimova, L.G., Nikolaev, A.I., Shchukina, E.S. et al. Preparation of Precursor for Hydrothermal Synthesis of Alkaline Titanosilicates. Theor Found Chem Eng 54, 675–680 (2020). https://doi.org/10.1134/S0040579520040077
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DOI: https://doi.org/10.1134/S0040579520040077