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

doi:10.3724/SP.J.1077.2012.11552

Abstract

Abstract: 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℃, at which the amorphous alumina can be transformed into AlOOH, and become γ-Al₂O₃ after 500℃ calcination. Meanwhile, the monoliths catalytic carriers have a superior stability for crystalline structures in the steam atmosphere at high temperature.

Key words: anodic oxidation, alumina, hydration, plate support

CLC Number:

TQ174

ZHANG Qi, JIANG Zhong-Rui, SUN Dong-Mei, HAN Da-Ying, ZHU Zi-Bin. Effect of Crystalline State of Anodized Porous Al₂O₃/Al as Supports by Hydration[J]. Journal of Inorganic Materials, 2012, 27(7): 693-698.

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

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