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Insights into the Reactivity of La1−xSrxMnO3 (x = 0 ÷ 0.7) in High Temperature N2O Decomposition Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X
Output data Year: 2011, Volume: 141, Number: 2, Pages: 322-331 Pages count : 10 DOI: 10.1007/s10562-010-0503-0
Tags La-Sr-Mn mixed oxide, Layer-structured perovskite, Microdistortions, Nitrous oxide decomposition, Oxygen mobility, Polymorphic phase transition
Authors Ivanov D.V. 1 , Pinaeva L.G. 1 , Isupova L.A. 1 , Nadeev A.N. 1 , Prosvirin I.P. 1 , Dovlitova L.S. 1
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Acad. Lavrentieva 5, Novosibirsk 630090, Russia

Abstract: In this paper a wide range of La1−x Sr x MnO3 (x = 0–0.7) perovskites was synthesized by Pechini route, characterized by XRD (including high temperature measurements), XPS, differential dissolution phase analysis, TPR H2, oxygen exchange and tested in N2O decomposition at 900 °C. At low degree of Sr substitution for La (x ≤ 0.3), high catalytic activity was found for perovskites with hexagonal structure (x = 0.1–0.2) and can be related to fast oxygen mobility caused by the lattice disordering during polymorphic phase transition from the hexagonal to cubic structure. For multiphase samples (x > 0.3) increase of activity and oxygen mobility can be attributed to the formation of the layer-structured perovskite–LaSrMnO4 on the surface.
Cite: Ivanov D.V. , Pinaeva L.G. , Isupova L.A. , Nadeev A.N. , Prosvirin I.P. , Dovlitova L.S.
Insights into the Reactivity of La1−xSrxMnO3 (x = 0 ÷ 0.7) in High Temperature N2O Decomposition
Catalysis Letters. 2011. V.141. N2. P.322-331. DOI: 10.1007/s10562-010-0503-0 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 2, 2010
Accepted: Nov 11, 2010
Published online: Nov 30, 2010
Published print: Feb 1, 2011
Identifiers:
publication_identifier.wos_identifier_type WOS:000287506500015
publication_identifier.scopus_identifier_type 2-s2.0-79951945750
publication_identifier.rinz_identifier_type 16684258
publication_identifier.accession_number_identifier_type 2010:1490917
publication_identifier.chemical_accession_number_identifier_type 154:218597
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