Synthesis and characterisation of MgAl2O4 spinel nanopowders via nonhydrolytic sol–gel route

Hui LI; Heng-Yong WEI; Yi CUI; Rong-Li SANG; Jing-Long BU; Ying-Na WEI; Jian LIN; Jun-Hong ZHAO

doi:10.2109/jcersj2.16297

Full papers

Synthesis and characterisation of MgAl₂O₄ spinel nanopowders via nonhydrolytic sol–gel route

Hui LI, Heng-Yong WEI, Yi CUI, Rong-Li SANG, Jing-Long BU, Ying-Na WEI, Jian LIN, Jun-Hong ZHAO

Author information

Hui LI
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
Heng-Yong WEI
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
School of Materials Science and Engineering, Tongji University
Yi CUI
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
Rong-Li SANG
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
Jing-Long BU
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
Ying-Na WEI
College of Materials Science and Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology
Jian LIN
School of Materials Science and Engineering, Tongji University
Jun-Hong ZHAO
School of Materials Science and Engineering, Tongji University

Keywords: Magnesium aluminate spinel, Nanopowders, Nonhydrolytic sol–gel

JOURNAL FREE ACCESS

2017 Volume 125 Issue 3 Pages 100-104

DOI https://doi.org/10.2109/jcersj2.16297

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Abstract

Magnesium aluminate spinel (MgAl₂O₄) nanopowders were synthesized via nonhydrolytic sol–gel route using anhydrous ethanol, aluminium chloride and magnesium chloride as raw materials. The samples were characterized using differential thermal and thermogravimetric analyses, X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer–Emmet–Teller analysis, dynamic light scattering, scanning electron microscopy and transmission electron microscopy. The results showed that the powders with a single MgAl₂O₄ spinel phase were obtained after annealing the gel precursor at 900°C, and their average particle size and BET specific surface area were about 30 nm and 43.57 m²/g. In addition, the synthesized MgAl₂O₄ spinel nanopowders possessed mesoporous structure with the pore diameter between 3–50 nm. The MgAl₂O₄ spinel nanopowders also exhibited superior sintering properties.

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