Preparation and Properties of MoO3−TiO2−SiO2 Composites with Spherical Shape of Agglomerates

• Published in: Russian journal of applied chemistry 2019, Vol.92 (2), p.171-180
• Main Authors: Kuznetsova, S. A., Brichkov, A. S., Lisitsa, K. V., Shamsutdinova, A. N., Kozik, V. V.
• Format: Article
• Language: English
• Subjects: Agglomerates; Agglomeration; Anion exchanging; Chemical composition; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Electron probe microanalysis; Electron probes; Industrial Chemistry/Chemical Engineering; Inorganic Synthesis and Industrial Inorganic Chemistry; Ions; Molybdenum oxides; Molybdenum trioxide; Morphology; Organic chemistry; Polymer matrix composites; Polymers; Resins; Silicon dioxide; Sorption; Tetraethyl orthosilicate; Thermal decomposition; Titanium dioxide; X-ray diffraction
• ISSN: 1070-4272; 1608-3296
• DOI: 10.1134/S1070427219020010

MoO 3 −TiO 2 −SiO 2 composites with spherical shape of agglomerates were prepared by thermal decomposition of TOKEM-400 and TOKEM-840 anion-exchange resins preliminarily loaded with Mo 7 OO 24 6 − ions with the applied sol based on tetrabutoxytitanium with tetraethoxysilane. The phase and chemical compositions of the composites were determined by X-ray diffraction and electron probe microanalysis. The influence of the resin type on the surface morphology of MoO 3 −TiO 2 −SiO 2 composites was demonstrated. To obtain the MoO 3 −TiO 2 −SiO 2 composite with the spherical shape of agglomerates, it is necessary to use TOKEM-400 resin characterized by higher sorption capacity for Mo 7 O 24 6 − . ions due to exchange of the OH− ions of the resin for Mo 7 O 24 6 − . The temperature conditions for preparing spherical MoO 3 −TiO 2 −SiO 2 composites were suggested. The total capacity and sorption capacity for Mo 7 O 24 6 − of TOKEM-400 and TOKEM-840 anion-exchange resins were determined.