Synthesis of spherical TiO2-SiO2 granules by joint hydrolysis of tetrabutoxytitanium and tetraethoxysilane, with KU-23 polymeric cation exchanger used as matrix

Шишмаков, А. Б.; Koryakova, O. V.; Mikushina, Yu. V.; Антонов, Д. О.; Petrov, L. A.

doi:10.1134/s1070427214090067

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The technical cellulose was impregnated with a solution of tetrabutoxytitanium in chloroform with a volume ratio of 50:50, and after that held in air until complete solvent evaporation. The further product hydrolysis was carried out in an aqueous ammonia atmosphere, then dried to stable weight by the methods by Shishmakov et al . The TiO 2 content in the samples was determined by weighting.…”

Section: Methodsmentioning

confidence: 99%

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Hybrid composites based on technical cellulose from rice husk

Shapovalova

Вураско

Petrov

et al. 2017

J of Applied Polymer Sci

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We introduced the preparation of hybrid composites using technical cellulose as a matrix material from rice husks with a natural SiO 2 content from 0% to 19.4%. In this work, the physicochemical characteristics of the resulting hybrid composites have been investigated. The presence of SiAOAC chemical bonds in the resulting hybrid composites was determined by infrared spectroscopy. Microscopic analysis showed the complete removal of the mineral component and lignin from the cell wall of the rice husk fibers. This allows obtaining of an expanded surface of the fibers (101.7 m 2 /g) with uniform distribution of the TiO 2 aggregates. It could be shown that with content increasing of natural silicon dioxide in the hybrid composite the decomposition rate of H 2 O 2 also increases.

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Section: Methodsmentioning

confidence: 99%

“…The synthesis of TiO 2 –SiO 2 system has been discussed in a number of studies, in which TEOS or SiO 2 ‐aerogel was used as a silicon component. Binary systems in these studies are synthesized in two ways.…”

Section: Introductionmentioning

confidence: 99%

Hybrid composites based on technical cellulose from rice husk

Shapovalova

Вураско

Petrov

et al. 2017

J of Applied Polymer Sci

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“…The actual task for researchers is to find out alternative methods for obtaining spherical composites with targeted properties, the choice of template, the establishment of optimal parameters that contribute to the materials production with given catalytic properties. Using the example of metal oxide composites of YBa 2 Cu 3 O 7−δ and TiO 2 -SiO 2 composites production in works [18][19][20], it was shown that ion exchange resins could act as a template. Earlier [5,21], it was indicated that ion exchange resins could be used as a template for the preparation of catalytically active oxide composites TiO 2 −SiO 2 /Cr 2 O 3 and TiO 2 −SiO 2 /Co 3 O 4 with a spherical shape of aglomerates.…”

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confidence: 99%

Production of TiO2/Cr2O3 Composite Material in the Spherical Form

et al. 2019

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Spherical TiO2/Cr2O3 oxides composites were obtained by template method accompanied with sol-gel method. Ion exchange resins of spherical form (TOKEM-100 and TOKEM-250) were used as an organic polymer matrix. Thermal analysis, X-ray phase analysis and micro-X-ray spectral analysis were used to identify the formation process and compositions of oxides composites. The formation of spherical oxide composite ends at 400 °C and the final products are a mixture of two oxides: Cr2O3 and TiO2 regardless of the structure of the used template. According SEM data prepared TiO2/Cr2O3 composites have spherical form and the size of sphere found to be in a range from 300 to 870 µm.

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