Effects of preparation methods on the oxygen nonstoichiometry, B-site cation valences and catalytic efficiency of perovskite La0.6Sr0.4Co0.2Fe0.8O3−δ
Article
Article Title | Effects of preparation methods on the oxygen nonstoichiometry, B-site cation valences and catalytic efficiency of perovskite La0.6Sr0.4Co0.2Fe0.8O3−δ |
---|---|
ERA Journal ID | 4877 |
Article Category | Article |
Authors | Ge, Lei (Author), Zhu, Zhonghua (Author), Shao, Zongping (Author), Wang, Shaobin (Author) and Liu, Shaomin (Author) |
Journal Title | Ceramics International |
Journal Citation | 35 (8), pp. 3201-3206 |
Number of Pages | 6 |
Year | 2009 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0272-8842 |
1873-3956 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.ceramint.2009.05.024 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0272884209002259?via%3Dihub |
Abstract | La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) powders were synthesized respectively by an EDTA (ethylenediaminetetraacetic acid)-Citrate sol-gel process and a low-temperature auto-combustion process. The samples were characterized by XRD, SEM, BET, TGA and instant temperature analysis. The iodometric titration was used to determine the average valence of Co and Fe ions and the oxygen nonstoichiometry of the prepare powders. The catalytic properties of the synthesized powders were investigated by the hydrogen peroxide catalytic decomposition. Pure-perovskite structure was formed by both synthesis methods. The oxygen nonstoichiometry of the samples prepared by the auto-combustion process is larger than that by the sol-gel process. The catalytic activities of the powders from two synthesis processes also differed largely due to the different oxygen nonstoichiometry, surface area and crystalline sizes. |
Keywords | La0.6Sr0.4Co0.2Fe0.8O3−δ, oxygen nonstoichiometry, hydrogen peroxide decomposition |
ANZSRC Field of Research 2020 | 340210. Solid state chemistry |
400408. Reaction engineering (excl. nuclear reactions) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing University of Technology, China |
University of Queensland | |
Curtin University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q540y/effects-of-preparation-methods-on-the-oxygen-nonstoichiometry-b-site-cation-valences-and-catalytic-efficiency-of-perovskite-la0-6sr0-4co0-2fe0-8o3
163
total views7
total downloads1
views this month0
downloads this month