Journal of the Chinese Ceramic Society, Volume. 51, Issue 1, 163(2023)
Preparation of Mesoporous Petal-like MgAl2O4
In the field of catalyst support and adsorption, mesoporous petal-like MgAl2O4 has attracted much attention because of their large surface area, abundant and accessible catalytic sites and not easy to aggregate. Mesoporous petal-like MgAl2O4 was prepared by a molten salt assisted non-hydrolytic sol-gel method with aluminum wire as aluminum source, magnesium powder as magnesium source, absolute ethyl alcohol as a solvent and Na2MoO4 as a molten salt, respectively. The effects of heat treatment temperature and soaking time on the phase composition and morphology of petal-like MgAl2O4 were investigated by X-ray diffraction and field emission scanning electron microscopy. The microstructure of the petal-like MgAl2O4 was determined by transmission electron microscopy (TEM), and the specific surface area and pore volume were measured by N2 adsorption-desorption analysis. The results show that heat treatment temperature and soaking time both have an influence on the morphology. MgAl2O4 prepared has a petal-like morphology with a length of 140-160 nm when the heat treatment temperature and time are 900 ℃ and 8 h. The specific surface area of the prepared MgAl2O4 is 76 m2/g. Based on the results by TEM and N2 adsorption-desorption analysis, the petal-like MgAl2O4 exhibits a mesoporous structure. This work paves a promising approach to prepare mesoporous petal-like MgAl2O4.
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WU Qian, FENG Guo, WANG Sanhai, JIANG Feng, MIAO Lifeng, JIANG Weihui. Preparation of Mesoporous Petal-like MgAl2O4[J]. Journal of the Chinese Ceramic Society, 2023, 51(1): 163
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Received: Aug. 8, 2022
Accepted: --
Published Online: Mar. 10, 2023
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