Thermal Activation of Pd/CeO2-SnO2 Catalysts for Low-Temperature CO Oxidation Full article
| Journal |
Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883 |
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| Output data | Year: 2020, Volume: 277, Article number : 119275, Pages count : 16 DOI: 10.1016/j.apcatb.2020.119275 | ||||||
| Tags | CeO2-SnO2 composite; Ceria; CO oxidation; Pd; Thermal stability | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0003 |
| 2 | Federal Agency for Scientific Organizations | 0300-2016-0011 (АААА-А17-117040610364-9) |
Abstract:
In this work, the counter precipitation method was used to synthesise Pd/CeO2-SnO2 catalysts, which possess excellent low-temperature activity and high thermal stability. It was revealed that calcination of Pd/CeO2-SnO2 catalysts at 800−1000 °C induces significant growth of catalytic activity in CO oxidation at T<150 °C. This effect of thermal activation for Pd/CeO2-SnO2 catalysts was enhanced when water was admitted to the reaction mixture. In the presence of water the T50 value for the Pd/CeO2-SnO2 catalyst calcined at 900 °C becomes 45 °C lower than for the Pd/CeO2 catalyst. It was found that calcination of the catalysts at T<600 °C leads to the formation of solid solutions based on the fluorite and rutile structures. As the calcination temperature is raised above 600 °C, the solid solutions decompose with formation of catalytically active PdxCe1-xO2-δdispersed phase on the surface of SnO2 nanoparticles. The formed nanoheterogeneous structure provides both high thermal stability and high water resistance of Pd/CeO2-SnO2 catalysts.
Cite:
Slavinskaya E.M.
, Zadesenets A.V.
, Stonkus O.A.
, Stadnichenko A.I.
, Shchukarev A.V.
, Shubin Y.V.
, Korenev S.V.
, Boronin A.I.
Thermal Activation of Pd/CeO2-SnO2 Catalysts for Low-Temperature CO Oxidation
Applied Catalysis B: Environmental. 2020. V.277. 119275 :1-16. DOI: 10.1016/j.apcatb.2020.119275 WOS Scopus РИНЦ AN OpenAlex
Thermal Activation of Pd/CeO2-SnO2 Catalysts for Low-Temperature CO Oxidation
Applied Catalysis B: Environmental. 2020. V.277. 119275 :1-16. DOI: 10.1016/j.apcatb.2020.119275 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Mar 10, 2020 |
| Accepted: | Jun 24, 2020 |
| Published online: | Jun 25, 2020 |
| Published print: | Nov 15, 2020 |
Identifiers:
| Web of science: | WOS:000552015900083 |
| Scopus: | 2-s2.0-85087023943 |
| Elibrary: | 43299866 |
| Chemical Abstracts: | 2020:1314125 |
| OpenAlex: | W3037137052 |