Research output: Contribution to journal › Article › peer-review
Delafossite Ag2CuMnO4 is a Novel Catalytic Material for Low-Temperature Oxidation of CO and NH3. / Svintsitskiy, Dmitry A.; Sokovikov, Nikolai A.; Slavinskaya, Elena M. et al.
In: ChemCatChem, Vol. 14, No. 3, e202101697, 08.02.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Delafossite Ag2CuMnO4 is a Novel Catalytic Material for Low-Temperature Oxidation of CO and NH3
AU - Svintsitskiy, Dmitry A.
AU - Sokovikov, Nikolai A.
AU - Slavinskaya, Elena M.
AU - Fedorova, Elizaveta A.
AU - Boronin, Andrei I.
N1 - Funding Information: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (project AAAA‐A21‐121011390053‐4). D.A.S and N.A.S. thank the Council on grants of the President of the Russian Federation [grant number 075‐15‐2021‐101 (MK‐503.2021.1.3)]. The study was carried out using the facilities of the shared research center “National center of investigation of catalysts” at Boreskov Institute of Catalysis. The authors are grateful to A.N. Salanov and N.M. Chesnokova for EDS elemental analysis. Publisher Copyright: © 2021 Wiley-VCH GmbH
PY - 2022/2/8
Y1 - 2022/2/8
N2 - Ternary oxide of silver, copper, and manganese (Ag2CuMnO4) was prepared by hydrothermal synthesis in an alkaline solution. The prepared sample was characterized by a delafossite crystal structure without any other crystallized phases. The catalytic properties of Ag2CuMnO4 in oxidation reactions using molecular oxygen were investigated. High catalytic activity was found for Ag2CuMnO4 in the CO oxidation at room temperature, while ammonia oxidation occurred above 100 °C. Ammonia oxidation resulted in the formation of N2O/N2 or NO/NO2 products depending on the reaction temperature. As a result of the reaction exposure on Ag2CuMnO4 during heating up to 400 °C, a modification of surface composition with preservation of the delafossite structure was found. Oxide Ag2CuMnO4 was shown to be operating in wet CO oxidation under ambient conditions. Obtained data emphasize that Ag2CuMnO4 can be considered as a novel and prospective catalytic material with a high potential of application for oxidation processes at low temperatures including ambient conditions.
AB - Ternary oxide of silver, copper, and manganese (Ag2CuMnO4) was prepared by hydrothermal synthesis in an alkaline solution. The prepared sample was characterized by a delafossite crystal structure without any other crystallized phases. The catalytic properties of Ag2CuMnO4 in oxidation reactions using molecular oxygen were investigated. High catalytic activity was found for Ag2CuMnO4 in the CO oxidation at room temperature, while ammonia oxidation occurred above 100 °C. Ammonia oxidation resulted in the formation of N2O/N2 or NO/NO2 products depending on the reaction temperature. As a result of the reaction exposure on Ag2CuMnO4 during heating up to 400 °C, a modification of surface composition with preservation of the delafossite structure was found. Oxide Ag2CuMnO4 was shown to be operating in wet CO oxidation under ambient conditions. Obtained data emphasize that Ag2CuMnO4 can be considered as a novel and prospective catalytic material with a high potential of application for oxidation processes at low temperatures including ambient conditions.
KW - CO oxidation
KW - copper
KW - delafossite
KW - low temperature
KW - silver
UR - http://www.scopus.com/inward/record.url?scp=85120810014&partnerID=8YFLogxK
U2 - 10.1002/cctc.202101697
DO - 10.1002/cctc.202101697
M3 - Article
AN - SCOPUS:85120810014
VL - 14
JO - ChemCatChem
JF - ChemCatChem
SN - 1867-3880
IS - 3
M1 - e202101697
ER -
ID: 34969399