Effect of Precursors on the Morphology of Hydroxyl Aluminum Prepared by Hydrothermal Treatment

Abstract:

Hydrothermal treatment method was proposed to prepare boehmite and the effect of precursors on the morphology of beohmite was investigated. On the coordinate effect of organic and inorganic flower-like AlOOH assembled by nano-plates can be obtained by Al(NO₃)₃ as precursor. 3D urchin-like AlOOH superstructures consisting of nanoribbons were produced from hydrate AlCl₃ as reagents. Dissolution and recrystallinity of intermediate product AlOCl caused this result. Globe and hollow sphere morphologies of beohmite were synthesized by Al₂(SO₄)₃ in a water-alcohol system. The formation mechanism is also because of the dissolution and recrystallinity of intermediate product sodium sulfate aluminum. Beohmite prepared by hydrothermal treatment was transformed to γ- Al₂O₃ at 600°C. The morphologies of γ- Al₂O₃ powders were still kept their original forms.

• Periodical: Advanced Materials Research (Volumes 308-310)
• Pages: 542-547
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.308-310.542
• Online since: August 2011
• Authors: Jing Wang, Shi Jun, Bing Xu
• Keywords: Aluminium Hydroxide Sulfate, Boehmite, Hydrothermal Treatment

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