Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template | Sciact - CRIS-система Института катализа

Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template Научная публикация

Журнал

Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555

Вых. Данные

Год: 2023, Том: 15, Номер: 3, Страницы: 313-322 Страниц : 10 DOI: 10.1134/S2070050423030029

Ключевые слова

spherical materials, ion-exchange resins, sol-gel technique, chromium(III) oxide, titania, composites

Авторы

Buzaev A.A. ¹ , Rogacheva A.O. ¹ , Larina T.V. ² , Dokuchits E.V. ² , Khalipova O.S. ¹ , Zharkova V.V. ¹

Организации

1	Tomsk State University, Tomsk, 634050 Russia
2	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	0239-2021-0010
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FSWM-2020-0037

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.

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

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 CAPlus OpenAlex

Поступила в редакцию:	24 мая 2022 г.
Принята к публикации:	8 июл. 2022 г.
Опубликована в печати:	4 сент. 2023 г.
Опубликована online:	4 сент. 2023 г.

Web of science:	WOS:001061937600009
Scopus:	2-s2.0-85169688759
РИНЦ:	56442935
OpenAlex:	W4386416822

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