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Effect of Crystalline State of Anodized Porous Al2O3/Al as Supports by Hydration

Author(s): ZHANG Qi, JIANG Zhong-Rui, SUN Dong-Mei, HAN Da-Ying, ZHU Zi-Bin

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 27;
Issue: 7;
Start page: 693;
Date: 2012;
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Keywords: anodic oxidation; alumina; hydration; plate support

The porous alumina as a plate catalytic support was prepared by anodization. Effects of hydration condition on the property of alumina supports were studied. The samples were characterized by XRD, SEM, BET and etc. to illustrate the Al2O3/Al forming mechanism. The results show that the best hydration temperature is 80¡䪠at which the amorphous alumina can be transformed into AlOOH, and become γ-Al2O3 after 500¡䟣alcination. Meanwhile, the monoliths catalytic carriers have a superior stability for crystalline structures in the steam atmosphere at high temperature.

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