Study of sol-gel processing for fabrication of low density alumina microspheres


Dilsiz N., Akovali G.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol.332, pp.91-96, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 332
  • Publication Date: 2002
  • Doi Number: 10.1016/s0921-5093(01)01726-9
  • Title of Journal : MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
  • Page Numbers: pp.91-96

Abstract

A sol-gel process for producing microspheres of low density alumina has been developed. A Dispal alumina sol and aluminum monohydrate were used as starting materials. Microspheres with spherical shape and controllable size have been produced by using a drop generation technique, The technique consists of producing a continuous stream Of uniform droplets of alumina sol and then converting the drops into a rigid form by exposing them to an ammonium hydroxide gelation medium. By using this technique. alumina spheres with surface area 351 m(2)g(-1) and pore size 10.7 Adegrees have been prepared. (C) 2002 Elsevier Science B.V. All rights reserved.