Low-Temperature CO Oxidation by Pd/CeO2 Catalysts Synthesized Using the Coprecipitation Method | Sciact - CRIS-система Института катализа

Low-Temperature CO Oxidation by Pd/CeO2 Catalysts Synthesized Using the Coprecipitation Method Научная публикация

Журнал

Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883

Вых. Данные

Год: 2015, Том: 166-167, Страницы: 91-103 Страниц : 16 DOI: 10.1016/j.apcatb.2014.11.015

Ключевые слова

Coprecipitation, Low-temperature CO oxidation, Pd/CeO2, TEM, XPS

Авторы

Slavinskaya E.M. ^1,3 , Gulyaev R.V. ^1,3 , Zadesenets A.V. ^2,3 , Stonkus O.A. ^1,3 , Zaikovskii V.I. ^1,3 , Shubin Yu.V. ^2,3 , Korenev S.V. ^2,3 , Boronin A.I. ^1,3

Организации

1	Boreskov Institute of Catalysis SB RAS, Prosp. Akad. Lavrentieva 5, Novosibirsk 630090, Russia
2	Nikolaev Institute of Inorganic Chemistry SB RAS, Prosp. Akad. Lavrentieva 3, Novosibirsk 630090, Russia
3	Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russia

Информация о финансировании (2)

1	Сибирское отделение Российской академии наук	124
2	Министерство образования и науки Российской Федерации	074-U01

Pd/CeO2 catalysts synthesized using the coprecipitation method under a wide range of palladium loading and calcination temperatures were investigated in this study. Structural (XRD, TEM), spectroscopic (XPS) and kinetic (TPR-CO) methods were used to investigate the morphological and structural forms of the catalysts and identify the states of palladium as the active component on the CeO2 surface and in its bulk. It was found that the synthesis and subsequent calcination at 450 °C resulted in the formation of two main types of the catalyst components: PdO nanoparticles and PdxCe1−xO2−δ solid solution. Application of HRTEM allowed to establish the formation of aggregates where ceria or PdxCe1−xO2−δ nanoparticles were located around PdO nanoparticles. A subsequent calcination process resulted in partial dissolution of PdO nanoparticles in ceria lattice and formation of the surface compounds of palladium and ceria, PdOx(s)/Pd–O–Ce(s), which contain high reactive oxygen according to the TPR-CO data. Based on the XPS and TPR-CO data the catalytic activity at low temperatures (<100 °C) was determined by a combination of both palladium surface structures PdOx(s)/Pd–O–Ce(s) and palladium ions Pd2+ in the PdxCe1−xO2−δ bulk phase.

Slavinskaya E.M. , Gulyaev R.V. , Zadesenets A.V. , Stonkus O.A. , Zaikovskii V.I. , Shubin Y.V. , Korenev S.V. , Boronin A.I.
Low-Temperature CO Oxidation by Pd/CeO2 Catalysts Synthesized Using the Coprecipitation Method
Applied Catalysis B: Environmental. 2015. V.166-167. P.91-103. DOI: 10.1016/j.apcatb.2014.11.015 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	29 авг. 2014 г.
Принята к публикации:	8 нояб. 2014 г.
Опубликована online:	15 нояб. 2014 г.
Опубликована в печати:	1 мая 2015 г.

Web of science:	WOS:000348753400012
Scopus:	2-s2.0-84911371627
РИНЦ:	23956926
Chemical Abstracts:	2014:1992476
Chemical Abstracts (print):	162:41611
OpenAlex:	W2063663325

БД	Цитирований
Web of science	176
Scopus	182
РИНЦ	169
OpenAlex	183