物理化学学报 >> 1996, Vol. 12 >> Issue (10): 921-925.doi: 10.3866/PKU.WHXB19961012

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氧化铝的水热化学研究III 薄水铝石脱水产物的再水合现象

叶岗,李光辉,路春茂,张明海   

  1. 石油化工科学研究院，北京 100083
  • 收稿日期:1996-02-13 修回日期:1996-05-08 发布日期:1996-10-15
  • 通讯作者: 叶岗

Studies on Hydrothermal Behavior of Alumina III

Ye Gang,Li Guang-Hui,Lu Chun-Mao,Zhang Ming-Hai   

  1. Research Institute of Petroleum Processing,Beijing 100083
  • Received:1996-02-13 Revised:1996-05-08 Published:1996-10-15
  • Contact: Ye Gang

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关键词: 氧化铝, 氧化铝水合物, 水热化学, 薄水铝石, 再水合现象, 晶相转变

Abstract:

The rehydration of dehydrated products of boehmite with different textural morphology calcined at the temperature below 1000℃ is investigated by XRD and SEM. It is found that every dehydrated alumina is capable of being rehydratied and the rehydration product is boehmite. Rehydrates with different textural morphology have been produced from aluminas with different textural morphology, and the textural morphology of a rehydrate depends both on the starting alumina and on the hydrothermal conditions. The rehydration ability of aluminas is determined by their textural morphology and calcined temperature. Aluminas are directly rehydrated to rehydrate and the rehydration process is not the reverse. Process of the dehydration of the initial boehmite.

 

Key words: Alumina, Alumina hydrate, Hydrothermal chemistry, Boehmite, Rehydration, Phase transformation