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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.123  No.1442 (October) (2015)  >  pp.995-998

Journal of the Ceramic Society of Japan
<<Previous article Vol.123  No.1442 (October) (2015)   pp.995 - 998 Next article>>

Formation of CaFe2O4 porous structure by addition of Zr in malic acid complex

Yuki OBUKURO1), Kenji OBATA2), Ryosuke MAEDA2), Shigenori MATSUSHIMA2), Yuji OKUYAMA3), Naoki MATSUNAGA4), Go SAKAI4)
1) Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki 2) Department of Creative Engineering, National Institute of Technology (NIT), Kitakyushu College 3) Organization for Promotion of Tenure Track, University of Miyazaki 4) Department of Environmental Robotics, Faculty of Engineering, University of Miyazaki

The effect of Zr addition into malic acid complex was examined for the purpose of the improvement of microstructure and specific surface area of CaFe2O4. The CaFe2O4 phase could be obtained for both unadded and Zr-added (5 and 10 mol % with respect to Fe) system by calcination of precursor derived from malic acid complex at 700°C which is almost 200°C lower than that of conventional solid-state reaction method. Among the examined products, only the 5 mol % Zr-added product revealed characteristic smaller grains connected three dimensional porous structures resulting in higher specific surface area compared with unadded and 10 mol % Zr-added products. XPS measurements revealed that there are no notable changes in valence state for all constituent elements. The obtained final product of 5 mol % Zr-added CaFe2O4 is worth further investigate for various application from a view point of improved higher specific surface area and characteristic microstructure as well as the functionality of the material itself.


Keyword:
CaFe2O4, Zr addition, Malic acid complex, Morphology

Received: May 20, 2015
Accepted: August 07, 2015 , Published online: October 01, 2015

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