Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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A Study on the Preparation of Various Phase Alumina in High Purity by Sol-Gel Method

졸-겔법에 의한 여러 상의 고순도 Alumina 제조에 관한 연구

  • Kyu Min Hwang (Department of Chemical Engineering, Inha University) ;
  • Seung Soo Park (Department of Chemical Engineering, Inha University) ;
  • Hee Chul Lee (Department of Chemical Engineering, Inha University)
  • 황규민 (인하대학교 공과대학 화학공학과) ;
  • 박승수 (인하대학교 공과대학 화학공학과) ;
  • 이희철 (인하대학교 공과대학 화학공학과)
  • Published : 1989.04.20
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Abstract

Aluminum alkoxide, $Al(OC_3H_7\^i)_3\;and\;Al(OC_4H_9^s)_3$, were synthesized using aluminum sheet and corresponding alcohols to prepare various phase alumina in high purity. Aluminum hydroxides were prepared by hydrolysis of synthesized Al-alkoxides and from reagent $AlCl_3$. The catalytic properties of ${\gamma}$ and ${\eta}-Al_2O_3$ prepared at various temperatures were investigated and the reaction kinetics of ${\alpha}-Al_2O_3$ formation from $Al(OH)_3$ was considered.

금속알루미늄 조각과 alcohols을 반응시켜 Al-alkoxides를 합성하였으며 이것을 가수분해하여 얻은 Al-hydroxides와 시약 AlCl3로부터 얻은 Al-hydroxides를 여러 온도에서 소성하여 여러 상의 고순도 $Al_2O_3$를 제조하였다. 제조한 ${\gamma}$와 ${\eta}$상 알루미나의 촉매적 특성을 알아보았고, $Al(OH)_3$로부터 ${\alpha}-Al_2O_3$의 생성과정을 속도론적으로 고찰하였다.

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