Catalytic Activity of LaFe0.4Ni0.6O3/CeO2 Composites in CO and CH4 Oxidation Depending on Their Preparation Conditions

Autor:	Lyubov Isupova, Evgeny Gerasimov, Igor Prosvirin, Vladimir Rogov
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	LaFe0.4Ni0.6O3/CeO2 composites preparation methane CO oxidation Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 16, Iss 3, p 1142 (2023)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma16031142
Popis:	LaFe0.4Ni0.6O3/CeO2 (1:1) two-phase composite materials were prepared by mechanochemical (MC) and Pechini routes. The catalytic properties of the composites in methane and CO oxidation reactions strongly depend on their preparation conditions. In low-temperature (0.4Ni0.6O3 perovskite. The highest activity was observed for the composite prepared by mechanical treatment of perovskite and fluorite precursors. There is a correlation between activity and the content of weakly bound surface oxygen species. Catalytic activity in high-temperature (>750 °C) catalytic methane oxidation correlates with the reducibility of samples. The highest activity was observed for the composite prepared by the one-pot Pechini route with higher reducibility of the sample up to 600 °C.
Databáze:	Directory of Open Access Journals
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