ADSORPTION CHARACTERISTICS OF ALUMINA POWDERS PRODUCED BY EMULSION EVAPORATION

被引：26

作者：

SEVINC, I

SARIKAYA, Y

AKINC, M

机构：

[1] Department of Chemistry, Faculty of Science, University of Ankara, 06100 Tandogan, Ankara

[2] Department of Materials Science and Engineering, Iowa State University, Ames

来源：

CERAMICS INTERNATIONAL | 1991年 / 17卷 / 01期

关键词：

D O I：

10.1016/0272-8842(91)90002-H

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Alumina powders were produced by emulsion evaporation technique. Powders exhibiting various characteristics were produced by varying the concentration of aluminum ion in the aqueous solution, ratio of aqueous solution-to-mineral oil, and evaporation temperature. Calcined powders were found to be spherical in shape and with an average particle size of 1.5-8.5-mu-m. Electron microscope observations indicated that most of these spheres were broken porous microshells. Adsorptive properties of these powders were determined from nitrogen adsorption measurements. Specific surface area was determined by BET method, specific microporosity by Dubinin-Radushkevitch and total pore volume from desorption isotherms. Specific surface area was found to range between 60 and 95m2/g, and total pore volume ranged between 0.15 and 0.25 cm3/g for various samples.

引用

页码：1 / 4

页数：4

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