Low-temperature synthesis of La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite powder via asymmetric sol–gel process and catalytic auto-combustion
Article
Article Title | Low-temperature synthesis of La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite powder via asymmetric sol–gel process and catalytic auto-combustion |
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ERA Journal ID | 4877 |
Article Category | Article |
Authors | Ge, Lei (Author), Ran, Ran (Author), Shao, Zongping (Author), Zhu, Zhonghua (Author) and Liu, Shaomin (Author) |
Journal Title | Ceramics International |
Journal Citation | 35 (7), pp. 2809-2815 |
Number of Pages | 7 |
Year | 2009 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0272-8842 |
1873-3956 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.ceramint.2009.03.018 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0272884209001345?via%3Dihub |
Abstract | La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ powder was synthesized by a combined EDTA-citrate complexing process via low-temperature auto-combustion synthesis with NH 4 NO 3 as an oxidizer and a combustion trigger. Two novel methods were explored to improve this auto-combustion technology with reduced NH 4 NO 3 addition: the use of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ as the combustion catalyst and the application of asymmetric sol-gel process to provide the precursor with different NH 4 NO 3 concentrations. The prepared perovskite powder was characterized by BET, SEM, XRD and iodometric titration techniques. The catalytic performance of the powder was also examined in the decomposition of peroxide hydrogen. Experimental results indicate that powders from catalytic combustion and asymmetric precursor routes have more advantages in terms of better crystallites, higher specific surface area, higher B-site valence state, improved sintering capability and better catalytic performance in peroxide hydrogen decomposition than that from the synthesis with uniform NH 4 NO 3 distribution. |
Keywords | ceramic powder, auto-combustion, synthesis, asymmetry, catalysis |
ANZSRC Field of Research 2020 | 340210. Solid state chemistry |
400406. Powder and particle technology | |
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/q540z/low-temperature-synthesis-of-la0-6sr0-4co0-2fe0-8o3-perovskite-powder-via-asymmetric-sol-gel-process-and-catalytic-auto-combustion
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