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, cilt.332, ss.91-96, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 332
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0921-5093(01)01726-9
  • Dergi Adı: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
  • Sayfa Sayıları: ss.91-96

Özet

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.