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Pd-Ce-Ox Species on MWCNTs Surface: Probing the Structure-Activity Correlation in Low-Temperature CO Oxidation Научная публикация

Журнал Applied Surface Science
ISSN: 0169-4332
Вых. Данные Год: 2023, Том: 611, Номер: Part B, Номер статьи : 155750, Страниц : 12 DOI: 10.1016/j.apsusc.2022.155750
Ключевые слова Palladium; Ceria; MWCNTs; Wet CO oxidation; Metal-support interaction
Авторы Kibis Lidiya S. 1 , Zadesenets Andrey V. 2 , Garkul Ilia A. 2 , Korobova Arina N. 1 , Kardash Tatyana Yu. 1 , Fedorova Elizaveta A. 3 , Slavinskaya Elena M. 1 , Stonkus Olga A. 1 , Korenev Sergey V. 2 , Podyacheva Olga Yu. 1 , Boronin Andrei I. 1
Организации
1 Boreskov Institute of Catalysis, pr. Lavrentieva 5, Novosibirsk 630090, Russia
2 Nikolaev Institute of Inorganic Chemistry, pr. Lavrentieva 3, Novosibirsk 630090, Russia
3 Leibniz Institute for Catalysis, Albert-Einstein Str. 29a, Rostock 18059, Germany

Информация о финансировании (1)

1 Российский научный фонд 21-13-00094

Реферат: Herein, the highly dispersed palladium and ceria species were deposted on the surface of multi-walled carbon nanotubes (MWCNTs) by co-deposition from acetone solutions. The use of MWCNTs allowed varying Pd/Ce atomic ratio in a wide range, while maintaining a high dispersion of the active components. Application of physicochemical methods revealed the formation of various palladium species. Single Pd2+ ions dispersed in CeO2 lattice were the main Pd-Ce-Ox species at low Pdat/Ceat ratio. With an increase of the Pd content in the samples the preferential formation of PdO particles in a tight contact with CeO2 nanoparticles was observed. The size of PdO and CeO2 primary particles was in a range of 1–5 nm. The Pd-Ce-Ox/MWCNTs samples showed high activity in the CO oxidation reaction already at room temperature with a temperature of 50% CO conversion below 100 °C. The Pd2+-CeO2 and PdO-CeO2 species demonstrated the comparable activity in “dry” CO oxidation. However, the presence of water vapor in the reaction mixture resulted in the immediate deactivation of Pd2+-CeO2 species, while PdO-CeO2 species retained a high activity at 20°С. The results of the work highlight the benefits of MWCNTs, Pd, and CeO2 combination for obtaining catalysts highly active in CO oxidation.
Библиографическая ссылка: Kibis L.S. , Zadesenets A.V. , Garkul I.A. , Korobova A.N. , Kardash T.Y. , Fedorova E.A. , Slavinskaya E.M. , Stonkus O.A. , Korenev S.V. , Podyacheva O.Y. , Boronin A.I.
Pd-Ce-Ox Species on MWCNTs Surface: Probing the Structure-Activity Correlation in Low-Temperature CO Oxidation
Applied Surface Science. 2023. V.611. NPart B. 155750 :1-12. DOI: 10.1016/j.apsusc.2022.155750 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: 3 сент. 2022 г.
Принята к публикации: 15 нояб. 2022 г.
Опубликована online: 22 нояб. 2022 г.
Опубликована в печати: 15 февр. 2023 г.
Идентификаторы БД:
Web of science: WOS:000997402500001
Scopus: 2-s2.0-85142460451
РИНЦ: 54017155
Chemical Abstracts: 2022:2989344
OpenAlex: W4309775662
Цитирование в БД:
БД Цитирований
Scopus 7
Web of science 7
РИНЦ 8
OpenAlex 7
Альметрики: