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Journal of Nanomaterials
Volume 2017, Article ID 9120586, 8 pages
https://doi.org/10.1155/2017/9120586
Research Article

Lanthanum-Based Perovskite-Type Oxides La1−xCexBO3 (B = Mn and Co) as Catalysts: Synthesis and Characterization

1Institute of Physics and Technology, Mongolian Academy of Sciences, 13330 Ulaanbaatar, Mongolia
2Frank Laboratory of Neutron Physics, JINR, Dubna 141980, Russia

Correspondence should be addressed to Nyamdavaa Erdenee; moc.oohay@e_mayn

Received 25 January 2017; Accepted 7 March 2017; Published 20 March 2017

Academic Editor: Hui Zhang

Copyright © 2017 Nyamdavaa Erdenee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

La1−xCexCoO3 ( = 0, 0.2, 0.4) and La1−xCexMnO3 ( = 0, 0.2) perovskite-type oxides were prepared by sol-gel process. Characterization techniques EDS, FTIR, XRD, BET, and XPS experiments were performed to survey the composition, bulk structure, and the surface properties of perovskites. The reduction behavior, thermal stability, and catalytic activity were studied by H2-TPR and catalytic performance. All synthesized samples showed well crystalline perovskite structure, 8–22 nm crystallite sizes, and SSA with 2–27 m2 g−1. The XRD results showed that the Ce substitution promoted the structural transformation for LaCoO3 from rhombohedral into cubic and for LaMnO3 no change in lattice geometry. Substitution with cerium ( = 0.2) showed smaller crystallite size, higher SSA, and the highest reducibility and catalytic activity for LaCoO3.