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Citation: Ye Gang, Li Guang-Hui, Zhang Ming-Hai. The Hydrothermal Behavior of Alumina IV. Rehydration of α-Al₂O₃[J]. Acta Physico-Chimica Sinica, ;1996, 12(12): 1098-1102. doi: 10.3866/PKU.WHXB19961210 shu

The Hydrothermal Behavior of Alumina IV. Rehydration of α-Al₂O₃

1.
Reseach Institute of Petroleum Processing,Beijing 100083

Received Date: 15 May 1996
Available Online: 15 December 1996

The rehydration of several α-Al2O3 has been investigated by means of XRD, DTA, TG and nitrogen adsorption methods. It is found that all α-Al2O3 samples are capable of rehydration at 250℃ and under saturated pressure. The rehydrated products depend on starting α-Al2O3. α-Al2O3 dehydrated at above 1000℃ rehydrates to boehmite; α-Al2O3 derived from diaspore at low temperatures rehydrates to diaspore. The quantitative analysis of the rehydration of α-Al2O3 has been studied.
- Alumina,
- α-Al₂O₃,
- Corundum;Alumina hydrate,
- Boehmite,
- Diaspore,
- Rehydration,
- Phase transition
  ,
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The Hydrothermal Behavior of Alumina IV. Rehydration of α-Al2O3

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通讯作者: 陈斌, bchen63@163.com

The Hydrothermal Behavior of Alumina IV. Rehydration of α-Al₂O₃