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Preparation and Reaction Mechanism of Zinc Aluminate Spinel Powders by Molten Salt Method
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Yunqin GAO, Jie LIANG, Aiqiong MA, Xing HOU
Journal of the Chinese Ceramic Society | 2020, 48(12) : 1953 - 1959
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Journal of the Chinese Ceramic Society | 2020, 48(12): 1953-1959
Preparation and Reaction Mechanism of Zinc Aluminate Spinel Powders by Molten Salt Method
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Yunqin GAO, Jie LIANG, Aiqiong MA, Xing HOU
Affiliations
  • National Experimental Teaching Demonstration Center for Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China

    • GAO Yunqin (1972-), female, Master, Senior Engineer. E-mail:

About Author:

GAO Yunqin (1972-), female, Master, Senior Engineer. E-mail:

Published: 2020-12-20 doi: 10.14062/j.issn.0454-5648.20200219
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A zinc aluminate spinel powder was prepared by a molten salt method using Al2(SO4)3·18H2O, ZnO as raw material and Na2SO4 as a flux of molten salt. The influences of molten salt amount, synthesis temperature and soaking time on the synthesis performance of zinc aluminate spinel powder were investigated. The growth mechanism, phase composition and microstructure of synthesized product were analyzed. The reaction processes of two systems without and with 10% (in mass fraction) molten salt Na2SO4 were investigated by thermogravimetry and differential scanning analysis. The results indicate that a pure zinc aluminate spinel powder can be obtained at 1 000 ℃ for 3 h when Na2SO4 is used as a molten salt at the amount of 10%. Most of the synthesized zinc aluminate spinel crystals are a hexagonal prism shape, a small part is octahedral shape and the crystalline sizes are 100-200 nm. Zinc aluminate spinel can be synthesized at a lower temperature in the presence of Na2SO4 as a molten salt. In liquid phase environment, the formation of zinc aluminate spinel is principally controlled via template synthesis reactions, and secondarily controlled via dissolution-precipitation reactions.

molten salt method  /  zinc aluminate spinel  /  reaction processes  /  template synthesis mechanism  /  dissolution-precipitation mechanism
高云琴, 梁杰, 马爱琼, 侯星. 熔盐法制备锌铝尖晶石粉体及其反应机理. 硅酸盐学报, 2020 , 48 (12) : 1953 -1959 . DOI: 10.14062/j.issn.0454-5648.20200219
Yunqin GAO, Jie LIANG, Aiqiong MA, Xing HOU. Preparation and Reaction Mechanism of Zinc Aluminate Spinel Powders by Molten Salt Method[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (12) : 1953 -1959 . DOI: 10.14062/j.issn.0454-5648.20200219
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Year 2020 volume 48 Issue 12
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Article Info
doi: 10.14062/j.issn.0454-5648.20200219
  • Receive Date：2020-03-28
  • Online Date：2026-10-30
  • Published：2020-12-20
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  • Received：2020-03-28
  • Revised：2020-04-26
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    National Experimental Teaching Demonstration Center for Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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