Geodesic
Alumina and silica supported Ce–Fe–O systems obtained by the solution combustion method and their performance in CO$_2$ hydrogenation to syngas
Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 6, pp. 679-689 Cet article a éte moissonné depuis la source Math-Net.Ru

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This study presents Ce–Fe–O systems supported on $\gamma$-Al$_2$O$_3$ or SiO$_2$ to enhance the reactivity of an oxygen-deficient CeFeO$_3$ perovskite phase, which are promising catalysts for the production of fuels and chemicals from CO$_2$ as feedstock. The synthesis was carried out by the glycine-nitrate solution combustion method at various fuel-to-oxidizer ratios, and with or without the addition of ammonium nitrate. The obtained composites were characterized by XRD, SEM, EDX, N$_2$-physisorption, H$_2$-TPR, and CO$_2$-TPD to study the relationship of physicochemical properties with catalytic CO$_2$ hydrogenation (rWGS) activity. $\gamma$-Al$_2$O$_3$ was found to be a more suitable support than SiO$_2$ due to its ability to form a higher content of the perovskite phase, significantly reduce the size of CeFeO$_3$ crystallites, and increase oxygen defectiveness and CO$_2$ adsorption capacity. Combustion in the presence of silica results in the binding of most of cerium into a silicate phase, which is inactive for rWGS.
Keywords: perovskites, cerium orthoferrite, CeFeO$_3$, alumina, silica, solution combustion synthesis, carbon dioxide, CO$_2$ hydrogenation, rWGS.
Mots-clés : glycine 
@article{NANO_2023_14_6_a7,
     author = {Anna N. Matveyeva and Shamil O. Omarov and Marianna A. Gavrilova},
     title = {Alumina and silica supported {Ce{\textendash}Fe{\textendash}O} systems obtained by the solution combustion method and their performance in {CO}$_2$ hydrogenation to syngas},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {679--689},
     year = {2023},
     volume = {14},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2023_14_6_a7/}
}
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Anna N. Matveyeva; Shamil O. Omarov; Marianna A. Gavrilova. Alumina and silica supported Ce–Fe–O systems obtained by the solution combustion method and their performance in CO$_2$ hydrogenation to syngas. Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 6, pp. 679-689. http://geodesic.mathdoc.fr/item/NANO_2023_14_6_a7/