Mechanochemical Synthesis and Reactivity of La1-xSr xFeO3-y Perovskites (0 ≤ x ≤ 1) Full article
Conference |
International Conference on Mechanochemistry and Mechanical Alloying 07-11 Sep 2003 , Braunschweig |
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Journal |
Journal of Materials Science
ISSN: 0022-2461 , E-ISSN: 1573-4803 |
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Output data | Year: 2004, Volume: 39, Number: 16-17, Pages: 5517-5521 Pages count : 5 DOI: 10.1023/B:JMSC.0000039277.57911.5f | ||||
Tags | Oxidation; Polymer; Phase Transition; Ferrite; Catalytic Activity | ||||
Authors |
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Affiliations |
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Funding (1)
1 | The Ministry of Education and Science of the Russian Federation | UR.05.01.042 |
Abstract:
Mechanochemical synthesis of La1 − xSrxFe3 − y (0 ≤ x ≤ 1) perovskites was carried out from simple oxides. Undoped lanthanum ferrite samples calcined at 900 and 1100°C for 4 h are nearly single-phase systems, while some substituted ones (samples with 0.3 ≤ x ≤ 0.8 calcined at 900°C and samples with x = 0.3, x = 0.4 and x = 0.8 calcined at 1100°C) are two-phase systems consisting of orthorhombic perovskite La1 − xSrxFeO3 − y (A) and cubic or tetragonal perovskite SrzLa1 − zFeO3 − y (B) phases. In CO and CH4 oxidation processes, the specific catalytic activity (SCA) of samples calcined at 1100°C varies non-monotonously with the Sr content. In CO oxidation, SCA reaches a maximum in the range of La substitution by Sr where phase transition occurs and samples are comprised of two coexisting phases (x = 0.3 and 0.8). In CH4 oxidation, SCA decreases with the Sr content.
Cite:
Yakovleva I.S.
, Isupova L.A.
, Tsybulya S.V.
, Chernysh A.V.
, Boldyreva N.N.
, Alikina G.M.
, Sadykov V.A.
Mechanochemical Synthesis and Reactivity of La1-xSr xFeO3-y Perovskites (0 ≤ x ≤ 1)
Journal of Materials Science. 2004. V.39. N16-17. P.5517-5521. DOI: 10.1023/B:JMSC.0000039277.57911.5f WOS Scopus РИНЦ
Mechanochemical Synthesis and Reactivity of La1-xSr xFeO3-y Perovskites (0 ≤ x ≤ 1)
Journal of Materials Science. 2004. V.39. N16-17. P.5517-5521. DOI: 10.1023/B:JMSC.0000039277.57911.5f WOS Scopus РИНЦ
Dates:
Submitted: | Sep 11, 2003 |
Accepted: | Feb 27, 2004 |
Published print: | Aug 1, 2004 |
Identifiers:
Web of science | WOS:000224675800105 |
Scopus | 2-s2.0-4444283028 |
Elibrary | 14361872 |
Chemical Abstracts | 2004:695024 |
Chemical Abstracts (print) | 141:369265 |
OpenAlex | W2038718374 |