Research progress in preparation of sandy alumina with high specific surface area

被引：0

作者：

Cao L. ^{[1
]}

Yin J. ^{[2
]}

Liao Y. ^{[1
]}

Huang F. ^{[1
]}

Wang Y. ^{[1
]}

机构：

[1] Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

[2] Faculty of Metallurgical and Material Engineering, Chongqing University of Science and Technology, Chongqing

来源：

Cailiao Daobao/Materials Review | 2016年 / 30卷 / 11期

关键词：

Crystal seed precipitation; Enhancement; Pore structure; Sandy alumina; Specific surface area;

D O I：

10.11896/j.issn.1005-023X.2016.21.010

中图分类号：

学科分类号：

摘要：

Specific surface area, an important parameter of sand-shape Al2O3, has remarkable effects on the characteristics of the product, such as dissolution performance and fluoride absorption ability. The microcosmic mechanism of pore structure's effect on specific surface area was introduced, and influences of several controlling measures on properties like morphology, size distribution and especially specific surface area during the seeded precipitation process of sodium aluminate solution and the calcination process of aluminium hydroxide were discussed. A quick overview of some recent preparation technologies by enhancement with external field and modification of the solution system, and the performance of the product were given as well. It's proposed that the new methods can match the present technology effectively, which means a feasible process for preparing different kinds of products with high specific surface area from metallurgical-grade sandy Al2O3 to chemistry active Al2O3. The way to break through the bottleneck that the intensity of product will decrease with the increase of specific surface area and to obtain sandy Al2O3 with high quality are still research focuses in the future. © 2016, Materials Review Magazine. All right reserved.

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页码：62 / 67

页数：5

共 54 条

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