Synthesis of magnesium aluminate spinel nano-powders by co-precipitation method

被引：2

作者：

Li, H. ^{[1
]}

Liu, Y.Q. ^{[1
]}

Liu, H. ^{[1
]}

Yang, Z.J. ^{[1
]}

机构：

[1] Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing

来源：

Materials Research Innovations | 2015年 / 19卷

基金：

中国国家自然科学基金;

关键词：

Chemical co-precipitation method; Magnesium aluminate; Nano-powder; Spinel; Synthesis;

D O I：

10.1179/1432891715Z.0000000001910

中图分类号：

学科分类号：

摘要：

Magnesium aluminate spinel nano-powders were synthesised by the wet chemical co-precipitation method. First, the gel-like precursors were obtained by dropping ammonia into the mixed solution of magnesium chloride hexahydrate and aluminium chloride hexahydrate with different Mg2+/Al3+ molar ratios and concentrations. After drying, the precursors were calcined at 700°C, 800°C, 900°C, 1000°C and 1100°C for 1.5 hours, respectively. Finally, the obtained samples were characterised by X-ray diffraction, thermal gravimetric and differential thermal analysis and scanning electron microscopy. It was revealed that the pure phase of MgAl2O4started to form when the calcination temperature exceeded 700°C, and MgAl2O4spinel with the smallest average crystallite size could be obtained when the calcination temperature reached 900°C. © W. S. Maney & Son Ltd 2015.

引用

页码：S920 / S923

页数：3

共 10 条

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