Preparation of Model Rh–CeO2 Catalysts by Pulsed Laser Ablation in Liquid | Sciact - CRIS-система Института катализа

Preparation of Model Rh–CeO2 Catalysts by Pulsed Laser Ablation in Liquid Научная публикация

Журнал

Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779

Вых. Данные

Год: 2023, Том: 64, Номер: 11, Страницы: 2187-2199 Страниц : 13 DOI: 10.1134/s0022476623110161

Ключевые слова

pulsed laser ablation, cerium oxide, rhodium oxide, nanoparticles, low-temperature CO oxidation

Авторы

Kibis L.S. ¹ , Krotova A.I. ² , Fedorova E.A. ³ , Kardash T.Yu. ¹ , Stonkus O.A. ¹ , Svetlichnyi V.A. ⁴ , Slavinskaya E.M. ¹ , Boronin A.I. ¹

Организации

1	Federal Research Center Boreskov Institute of Catalysis, Novosibirsk, Russia
2	Novosibirsk State University, Novosibirsk, Russia
3	Leibniz Institute for Catalysis, Rostock, Germany
4	Tomsk State University, Tomsk, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

0239-2021-0003

The powders of Rh and CeO2 are synthesized by pulsed laser ablation in liquid. The Rh–CeO2 model catalysts are prepared by the calcination of these powders in a wide temperature range from 450 °C to 1000 °C. The formation of individual and mixed (rhodium- and cerium-containing) phases with increasing temperature of catalyst calcination is studied by powder XRD and Raman spectroscopy. The redox properties of prepared catalysts are tested in a temperature-programmed reaction of CO reduction; their catalytic properties are studied on the example of CO oxidation. It is shown that the catalysts remain stable during catalytic tests due to the formation of a nano-heterophase system consisting of rhodium oxide (Rh2O3) and cerium oxide (CeO2) nanoparticles. The discovered high stability is most likely explained by the formation of the Rh3+–CeO2 species with the localization of Rh3+ ions in subsurface CeO2 layers due to the contacts between rhodium oxide and cerium oxide nanoparticles. Introducing Rh3+ ions into Ce4+ positions of the CeO2 lattice distorts the cerium oxide structure and leads to the formation of active oxygen species interacting with CO at low temperatures. The catalysts are shown to preserve high activity in the reaction of low-temperature CO oxidation even after the calcination at 1000 °C.

Kibis L.S. , Krotova A.I. , Fedorova E.A. , Kardash T.Y. , Stonkus O.A. , Svetlichnyi V.A. , Slavinskaya E.M. , Boronin A.I.
Preparation of Model Rh–CeO2 Catalysts by Pulsed Laser Ablation in Liquid
Journal of Structural Chemistry. 2023. V.64. N11. P.2187-2199. DOI: 10.1134/s0022476623110161 WOS Scopus РИНЦ CAPlus OpenAlex

Кибис Л.С. , Кротова А.И. , Федорова Е.А. , Кардаш Т.Ю. , Стонкус О.А. , Светличный В.А. , Славинская Е.М. , Боронин А.И.
Использование метода импульсной лазерной абляции в жидкости для создания модельных катализаторов Rh–CeO2
Журнал структурной химии. 2023. Т.64. №11. 118600 :1-14. DOI: 10.26902/JSC_id118600 РИНЦ OpenAlex

Поступила в редакцию:	22 июн. 2023 г.
Принята к публикации:	24 июл. 2023 г.
Опубликована в печати:	29 нояб. 2023 г.
Опубликована online:	29 нояб. 2023 г.

Web of science:	WOS:001110710500018
Scopus:	2-s2.0-85178250319
РИНЦ:	56103375
Chemical Abstracts:	2023:2481164
OpenAlex:	W4389140191

Пока нет цитирований