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Citation: CHENG Zhi-Lin, CHAO Zi-Sheng, WAN Hui-Lin. Synthesis of Nanosized Alumina by Frothing Method[J]. Chinese Journal of Applied Chemistry, ;2002, 19(11): 1032-1036. shu

Synthesis of Nanosized Alumina by Frothing Method

1.
State Key Laboratory for Physical Chemistry of Solid Surface, Department of Chemistry, Xiamen University, Xiamen 361005

Corresponding author: CHAO Zi-Sheng,
Received Date: 11 March 2002
Available Online: 3 July 2002
Fund Project: 国家重点基础研究发展规划资助项目(G1999022401) (G1999022401)

Alumina with particle size of ca. 15 nm was synthesized by a frothing method. Effects of frothing reagents, ratio of frothing reagent to Al³⁺, frothing evaporat temperature and evaporation temperature on the particle size of product were investigated. The thermal stability and complexing ability of the frothing reagents were found to be the determined factors in synthesis of nanosized alumina. Citric acid appeared the best one among the frothing reagents tested to give the product with the smallest size, probably due to its medium complexizing ability and thermal stability. The optimum evaporation and frothing temperatures were 70~90℃ and 120~150℃, respectively. XRD, IR, DTG-DSC, TEM and NMR were used in monitoring the synthetic process.
- nanosized alumina,
- synthesis,
- frothing method,
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