New Perspectives of Pt–CeO2 System: Stabilization on MWCNTs for Boosting Activity and Water-Resistance in CO Oxidation at Ambient Temperatures | Sciact - CRIS-система Института катализа

New Perspectives of Pt–CeO2 System: Stabilization on MWCNTs for Boosting Activity and Water-Resistance in CO Oxidation at Ambient Temperatures Научная публикация

Журнал

ChemCatChem
ISSN: 1867-3880 , E-ISSN: 1867-3899

Вых. Данные

Год: 2024, Том: 16, Номер: 15, Номер статьи : e202400116, Страниц : 16 DOI: 10.1002/cctc.202400116

Ключевые слова

MWCNTs; Pt/CeO2; low-temperature CO oxidation; wet CO oxidation

Авторы

Slavinskaya Elena ¹ , Stonkus Olga ¹ , Kibis Lidiya ¹ , Lashina Elena ¹ , Zadesenets Andrey ² , Kardash Tatyana ¹ , Korenev Sergey ¹ , Podyacheva Olga ¹ , Boronin Andrei ¹

Организации

1	Boreskov Institute of Catalysis SB RAS, Pr. Lavrentieva 5, 630090 Novosibirsk, Russia
2	Nikolaev Institute of Inorganic Chemistry SB RAS, Pr. Lavrentieva 3, 630090 Novosibirsk, Russia

Информация о финансировании (2)

1	Российский научный фонд	21-13-00094
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUR-2024-0032

The present study elucidates new perspectives regarding the Pt–CeO2 system for CO oxidation. The successful deposition of highly dispersed Pt–CeO2 species onto the surface of multiwalled carbon nanotubes (MWCNTs) led to the formation of abnormally active and water-resistant catalysts. The catalysts were investigated by structural (XRD, TEM), spectral (XPS), and kinetic (TPR–CO+O2, TPR–CO, TPR–H2) methods. The application of TPR–CO+O2 revealed the remarkably high activity of all Pt–CeO2/MWCNTs catalysts at temperatures below 0 °C. The study of the catalysts at ambient temperature demonstrated high CO conversion in the presence of water vapor at a concentration of 100 ppm CO. The experimental findings suggest that active sites, comprising platinum structures stabilized directly on the surface of MWCNTs, play a pivotal role in the oxidation of CO under humid conditions. A dual–site approach was employed to develop a kinetic model that effectively describes the experimental data. This model provides valuable insights into the mechanism of wet CO oxidation.

Slavinskaya E. , Stonkus O. , Kibis L. , Lashina E. , Zadesenets A. , Kardash T. , Korenev S. , Podyacheva O. , Boronin A.
New Perspectives of Pt–CeO2 System: Stabilization on MWCNTs for Boosting Activity and Water-Resistance in CO Oxidation at Ambient Temperatures
ChemCatChem. 2024. V.16. N15. e202400116 :1-16. DOI: 10.1002/cctc.202400116 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	18 янв. 2024 г.
Принята к публикации:	18 апр. 2024 г.
Опубликована online:	22 мая 2024 г.
Опубликована в печати:	12 авг. 2024 г.

Web of science:	WOS:001228956200001
Scopus:	2-s2.0-85193694705
РИНЦ:	67237699
Chemical Abstracts:	2024:1214053
OpenAlex:	W4395006798

Пока нет цитирований