Preparation of High-Purity α-Alumina by Oil-in-Water Microemulsion

Jing Jing Ma; Bo Lin Wu

doi:10.4028/www.scientific.net/AMR.399-401.673

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Preparation of High-Purity α-Alumina by...

Preparation of High-Purity α-Alumina by Oil-in-Water Microemulsion

Abstract:

The main objective of this work was to prepare high purity α-alumina powder (α-Al₂O₃) by mixed oil-in-water microemulsion route. In this study α-alumina was prepared by quaternary microemulsion system (water/surfactant/co-surfactant/oil-phase). OP-10, alcohol and the mixed solution of cyclohexane and aluminium isopropoxide were used as surfactant, co-surfactant and oil-phase, respectively. After drying the amorphous precursor powder, α-alumina powder is obtained by sintering at 1200°C for 3-5h. The X-ray diffraction pattern shows the presence of alumina phase with crystal structure and the slow scan with step size 0.0170°/sec of selected diffraction peaks such as (113) has been recorded and calculated by Scherer’s formula. The average crystallite size is about 40nm.

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Periodical:

Advanced Materials Research (Volumes 399-401)

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673-676

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.673

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Online since:

November 2011

Authors:

Jing Jing Ma, Bo Lin Wu

Keywords:

High-Purity, Microemulsion, Oil-in-Water, α-Al₂O₃

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