Abstract
We have studied the thermal oxidation of composites produced by reacting sodium water glass with the B10H 2−10 anion owing to multicenter contacts and possessing a spatially branched structure. The results demonstrate that, in air between 300 and 500°C, some of the decahydro-closo-decaborate anions present in the water glass/B10H 2−10 system oxidize, which is accompanied by a large exotherm and leads to the formation of a surface borosilicate layer preventing further oxygen diffusion into the bulk of the sample and oxidation of the B10H 2−10 anion. Samples protected by a coating produced during thermal oxidation possess thermal and deformation stability up to 600°C.
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Goeva, L.V., Skachkova, V.K., Avdeeva, V.V., Malinina, E.A., Grachev, A.V., Shaulov, A.Yu., Berlin, A.A., and Kuznetsov, N.T., Interactions of sodium liquid glass with triethylammonium decahydro-closo-decaborate (Et3NH)2B10H10, Russ. J. Inorg. Chem., 2014, vol. 59, no. 2, pp. 107–110.
Miller, H.C., Miller, N.E., and Muetterties, E.L., Synthesis of polyhedral boranes, J. Am. Chem. Soc., 1963, vol. 85, no. 23, pp. 3885–3886.
Kuznetsov, N.T., Reactivity of polyhedral cluster anions Bn (n = 10, 12) as spatial aromatic systems, Russ. J. Inorg. Chem., 2002, vol. 47,suppl. 1, pp. 68–104.
Ivanov, S.V., Malinina, E.A., Solntsev, K.A., and Kuznetsov, N.T., Pyrolytic transformations of ammonium and alkylammonium salts containing polyhedral hydroborate anions, Koord. Khim., 1992, vol. 18, no. 4, pp. 394–400.
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Original Russian Text © V.K. Skachkova, L.V. Goeva, A.V. Grachev, V.V. Avdeeva, E.A. Malinina, A.Yu. Shaulov, A.A. Berlin, N.T. Kuznetsov, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 5, pp. 554–558.
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Skachkova, V.K., Goeva, L.V., Grachev, A.V. et al. Thermal oxidation of the decahydro-closo-decaborate anion B10H 2−10 in a silicate matrix. Inorg Mater 51, 498–502 (2015). https://doi.org/10.1134/S0020168515050155
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DOI: https://doi.org/10.1134/S0020168515050155