Реферат: Structural transformations in Pd/CeO2 catalysts during their calcination over a wide temperature range (450-1200 °C) were studied with structural, spectroscopic, and kinetic methods (XRD, TEM, XPS, and TPR). Two synthetic methods were applied: coprecipitation and incipient wetness impregnation. The impregnation synthesis produced the best low-temperature oxidation of CO (LTO CO) for the catalysts that were calcined at 450–900 °C. Their high LTO CO activities could be attributed to the formation of reactive surface clusters at the PdO−CeO2 interface. The coprecipitation synthesis produced a homogeneous PdxCe1-xO2-δ solid solution with no Pd nanostructured particles. Decomposition of the solid solution phase occurred at 800–850 °C and resulted in the formation of unusual Pd species, i. e., Pd(Ce)Ox superstructures and agglomerates consisting of 2 nm PdO particles. Further calcination of the catalysts resulted in the formation of mixed Pd0−PdO−CeO2 nanoparticles with a heterophase morphology that provided high thermal stability. These catalysts demonstrated capability for CO oxidation at temperatures below 100 °C after calcination at 1200 °C. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Библиографическая ссылка: Stonkus O.A. , Kardash T.Y. , Slavinskaya E.M. , Zaikovskii V.I. , Boronin A.I.
Thermally Induced Structural Evolution of Palladium-Ceria Catalysts. Implication for CO Oxidation
ChemCatChem. 2019. V.11. N15. P.3505–3521. DOI: 10.1002/cctc.201900752 WOS Scopus РИНЦ CAPlus OpenAlex

Даты:

Поступила в редакцию:	24 апр. 2019 г.
Принята к публикации:	5 июн. 2019 г.
Опубликована online:	9 июл. 2019 г.
Опубликована в печати:	9 авг. 2019 г.

Идентификаторы БД:

Web of science:	WOS:000480290100019
Scopus:	2-s2.0-85068511759
РИНЦ:	41635411
Chemical Abstracts:	2019:1329803
OpenAlex:	W2950034557

Цитирование в БД:

БД	Цитирований
Scopus	31
Web of science	30
РИНЦ	27
OpenAlex	32

Альметрики: