Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template Full article
| Journal |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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| Output data | Year: 2023, Volume: 15, Number: 3, Pages: 313-322 Pages count : 10 DOI: 10.1134/S2070050423030029 | ||||
| Tags | spherical materials, ion-exchange resins, sol-gel technique, chromium(III) oxide, titania, composites | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0010 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | FSWM-2020-0037 |
Abstract:
Two samples of TiO2/Cr2O3 composites are synthesized in the form of spherical grains via the stagewise thermal treatment of ion-exchange resins preliminarily saturated with chromium Cr3+ cations and dichromate Cr2O72- anions, and then coated with a film-forming titania-based solution. Calcination temperature regimes are set on the basis of a thermal analysis and determined by the type of ion-exchange resin selected as a template. The synthesized composites are generally composed of the α-Cr2O3 phase, and the
content of the TiO2 phase is less than 4%. The composites replicate the spherical shape of grains for the initial ion-exchange resins with sizes of 370 to 660 μm. The grains of the sample based on kaolinite adsorbing Cr3+ ions have a porous structure with bulbs and cavities. The anion-exchange resin-based sample grains have kinks and cracks over their surfaces due to a nonuniform distribution of adsorbed Cr2O72- anions in the initial anion-exchange resin. The composites exhibit catalytic activity in the deep p-xylene oxidation reaction. The
cation-exchange resin-based sample is more active, due apparently to the smaller accessible titania surfaces in the anion-exchange resin-based sample as a result of the formation of a solid Ti3+ solution in α-Cr2O3.
Cite:
Buzaev A.A.
, Rogacheva A.O.
, Larina T.V.
, Dokuchits E.V.
, Khalipova O.S.
, Zharkova V.V.
Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template
Catalysis in Industry. 2023. V.15. N3. P.313-322. DOI: 10.1134/S2070050423030029 WOS Scopus РИНЦ OpenAlex
Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template
Catalysis in Industry. 2023. V.15. N3. P.313-322. DOI: 10.1134/S2070050423030029 WOS Scopus РИНЦ OpenAlex
Original:
Бузаев А.А.
, Рогачева А.О.
, Ларина Т.В.
, Докучиц Е.В.
, Халипова О.С.
, Жаркова В.В.
Композиты TiO2 /Cr2O3 сферической формы, синтезированные с применением ионообменных смол в качестве темплата
Катализ в промышленности. 2022. Т.22. №6. С.68-77. DOI: 10.18412/1816-0387-2022-6-68-77 РИНЦ AN OpenAlex
Композиты TiO2 /Cr2O3 сферической формы, синтезированные с применением ионообменных смол в качестве темплата
Катализ в промышленности. 2022. Т.22. №6. С.68-77. DOI: 10.18412/1816-0387-2022-6-68-77 РИНЦ AN OpenAlex
Dates:
| Submitted: | May 24, 2022 |
| Accepted: | Jul 8, 2022 |
| Published print: | Sep 4, 2023 |
| Published online: | Sep 4, 2023 |
Identifiers:
| Web of science: | WOS:001061937600009 |
| Scopus: | 2-s2.0-85169688759 |
| Elibrary: | 56442935 |
| OpenAlex: | W4386416822 |