Synthesis and Physicochemical Properties of Complex Oxides K2MexTi8–xO16 (Me = Mg, Ni, Al) of Hollandite Structure
| العنوان: | Synthesis and Physicochemical Properties of Complex Oxides K2MexTi8–xO16 (Me = Mg, Ni, Al) of Hollandite Structure |
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| المؤلفون: | N. A. Morozov, N. V. Besprozvannykh, O. Yu. Sinel’shchikova, A. Yu. Postnov, S. K. Kuchaeva |
| المصدر: | Russian Journal of Applied Chemistry. 93:1132-1138 |
| بيانات النشر: | Pleiades Publishing Ltd, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Chemistry, Hydrogen oxidation, General Chemical Engineering, Sorption, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Catalysis, chemistry.chemical_compound, Hollandite, Composition (visual arts), 0210 nano-technology, Pyrolysis, Methylene blue, Nuclear chemistry |
| الوصف: | Materials of the hollandite structure in the K2O–MeO(Mе2O3)–TiO2 (Ме = Al, Ni, Mg) system, synthesized by two methods (solid-phase synthesis and pyrolysis of citrate–nitrate compositions), were studied. The pyrolysis, compared to the traditional solid-phase synthesis, yielded the materials with the more developed specific surface and, as a consequence, enhanced performance in sorption of a model dye, Methylene Blue (for K2MgTi7O16, q = 18.75 mg g–1). The K2Al2Ti6O16 sample, also prepared by pyrolysis, showed the highest catalytic performance in oxidation of СО and Н2. The hydrogen oxidation on this catalyst occurred to 95% at 355°С with the performance of ~0.21 × 10–5 mol g–1 s–1, which is two times higher compared to the sample of the same composition prepared by the solid-phase method. The hollandites show promise as sorbents and catalysts for gas treatment. |
| تدمد: | 1608-3296 1070-4272 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bfb541b1d65b8cfde31099dce3afc18f https://doi.org/10.1134/s1070427220080042 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........bfb541b1d65b8cfde31099dce3afc18f |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16083296 10704272 |
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