Novel synthesis of ultrafine hourglass-shaped aluminum hydroxide particles_中国颗粒学会

Novel synthesis of ultrafine hourglass-shaped aluminum hydroxide particles_中国颗粒学会

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Partic. vol. 4 no. 5 pp. 254-256 (October 2006)
doi: 10.1016/S1672-2515(07)60270-X

Research Note

Novel synthesis of ultrafine hourglass-shaped aluminum hydroxide particles

Qiuling Zhou, Ling Zhang, Chunzhong Li^*, Wei Shao

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czli@ecust.edu.cn

Abstract

In a novel method for synthesizing ultrafine aluminum hydroxide particles presented in this paper, the morphology and crystal structure of the particles were investigated by TEM, XRD, etc. The process consisted of two steps: chemical precipitation by acid and carbonation. The product has an hourglass or half-hourglass morphology with a narrow size distribution of 150-200 nm. Major endothermal peak of decomposition was found at 270°C by differential thermal analysis. X-ray diffraction identified the product as bayerite. Those properties were compared with those of aluminum hydroxide prepared by carbonization only.

Keywords

aluminum hydroxide; synthesis; ultrafine particles; hourglass-shaped