Effect of the Chemical Atmosphere of the Thermolysis of the Complex PdAg2(OAc)4(HOAc)4 on the Formation of Active Centers in Pd–Ag/CeO2 Catalysts for the Low-Temperature Oxidation of Carbon Monoxide
- Authors: Liberman E.Y.1, Nikolaev S.A.2, Naumkin A.V.3, Tsodikov M.V.4, Ezzhelenko D.I.2, Kon’kova T.V.1, Mikhailichenko A.I.1
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Affiliations:
- Mendeleev University of Chemical Technology
- Moscow State University
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
- Issue: Vol 59, No 6 (2018)
- Pages: 766-775
- Section: Article
- URL: https://journals.rcsi.science/0023-1584/article/view/164138
- DOI: https://doi.org/10.1134/S0023158418060095
- ID: 164138
Cite item
Abstract
The Pd–Ag/CeO2 catalysts were prepared by the impregnation of highly dispersed CeO2 with a solution of the heteroatomic complex PdAg2(OAc)4(HOAc)4. Samples obtained after the thermolysis of PdAg2(OAc)4(HOAc)4 in N2 and H2 contained Pd–Ag alloy and Pd particles immobilized on CeO2. The Pd0–CeO2 metal oxide centers formed at the interface were highly active in the low-temperature reaction of CO oxidation. The particles of Pd were absent from the Pd–Ag/CeO2 sample prepared by the decomposition of PdAg2(OAc)4(HOAc)4 in an atmosphere of O2; in this case, a significant portion of the Pd–Ag phase was covered with a film of CeO2, which dramatically slowed down the rate of reaction at low temperatures.
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About the authors
E. Yu. Liberman
Mendeleev University of Chemical Technology
Author for correspondence.
Email: el-liberman@mail.ru
Russian Federation, Moscow, 125047
S. A. Nikolaev
Moscow State University
Email: el-liberman@mail.ru
Russian Federation, Moscow, 119991
A. V. Naumkin
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: el-liberman@mail.ru
Russian Federation, Moscow, 119334
M. V. Tsodikov
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
Email: el-liberman@mail.ru
Russian Federation, Moscow, 119991
D. I. Ezzhelenko
Moscow State University
Email: el-liberman@mail.ru
Russian Federation, Moscow, 119991
T. V. Kon’kova
Mendeleev University of Chemical Technology
Email: el-liberman@mail.ru
Russian Federation, Moscow, 125047
A. I. Mikhailichenko
Mendeleev University of Chemical Technology
Email: el-liberman@mail.ru
Russian Federation, Moscow, 125047