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Microstructural changes in La0.5 Ca0.5 Mn0.5 Fe0.5 O3 solid solutions under the influence of catalytic reaction of methane combustion. / Gerasimov, Evgeny Yu; Rogov, Vladimir A.; Prosvirin, Igor P. и др.
в: Catalysts, Том 9, № 6, 563, 01.06.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Microstructural changes in La0.5 Ca0.5 Mn0.5 Fe0.5 O3 solid solutions under the influence of catalytic reaction of methane combustion
AU - Gerasimov, Evgeny Yu
AU - Rogov, Vladimir A.
AU - Prosvirin, Igor P.
AU - Isupova, Lyubov A.
AU - Tsybulya, Sergey V.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - This article attempts to study changes in the microstructure of solid solutions with the perovskite structure La0.5 Ca0.5 Mn0.5 Fe0.5 O3 under the action of the methane oxidation reaction medium. By the methods of XRD, XPS and HRTEM the initial condition of the structure and the surface of the perovskite were both investigated. A feature of the structure of this solid solution is the presence of planar defects in the direction of the planes (101). After the methane oxidation reaction, a similar study of perovskite structure was conducted to obtain the changes. It was shown that under the action of the reaction medium, Ca1−x Mnx O particles form on the surface of the perovskite phase, while planar defects in La0.5 Ca0.5 Mn0.5 Fe0.5 O3 structure remain. In situ XRD experiments on perovskite calcination in helium current up to 750◦ C showed the formation of a similar Ca1−x Mnx O phase on the perovskite surface.
AB - This article attempts to study changes in the microstructure of solid solutions with the perovskite structure La0.5 Ca0.5 Mn0.5 Fe0.5 O3 under the action of the methane oxidation reaction medium. By the methods of XRD, XPS and HRTEM the initial condition of the structure and the surface of the perovskite were both investigated. A feature of the structure of this solid solution is the presence of planar defects in the direction of the planes (101). After the methane oxidation reaction, a similar study of perovskite structure was conducted to obtain the changes. It was shown that under the action of the reaction medium, Ca1−x Mnx O particles form on the surface of the perovskite phase, while planar defects in La0.5 Ca0.5 Mn0.5 Fe0.5 O3 structure remain. In situ XRD experiments on perovskite calcination in helium current up to 750◦ C showed the formation of a similar Ca1−x Mnx O phase on the perovskite surface.
KW - Catalytic oxidation of methane
KW - In situ XRD
KW - Perovskite
KW - Planar defects
KW - Solid solutions
KW - OXIDATION
KW - perovskite
KW - PECHINI METHOD
KW - PERFORMANCE
KW - catalytic oxidation of methane
KW - NOBLE-METALS
KW - SUBSTITUTES
KW - in situ XRD
KW - OXYGEN
KW - planar defects
KW - PEROVSKITE OXIDES
KW - solid solutions
KW - X=0-1 PEROVSKITES
KW - PRECURSORS
KW - LAFEO3
UR - http://www.scopus.com/inward/record.url?scp=85069528639&partnerID=8YFLogxK
U2 - 10.3390/catal9060563
DO - 10.3390/catal9060563
M3 - Article
AN - SCOPUS:85069528639
VL - 9
JO - Catalysts
JF - Catalysts
SN - 2073-4344
IS - 6
M1 - 563
ER -
ID: 21045097