Synthesis of barium hexaaluminate by sol - gel method

졸 - 겔법에 의한 바륨헥사알루미네이트 합성

Complex alkoxides were synthesized using metal alkoxide method and were then hydrolyzed to prepare the precursors using sol - gel method. Then, the precursors were calcined in order to make barium hexaaluminate. Factors affecting the material properties of the barium hexaaluminate precursors were studied and they are the kinds and amount of alcohols, and reaction time. In addition, in the course of hydrolysis, the effects of the amount of water, reaction temperature and aging time were also studied in terms of the specific surface area and average particle size of the barium hexaaluminates.

금속 알콕사이드법에 의해 복합 알콕사이드를 합성하고, 이를 sol - gel법으로 가수분해 반응시켜 얻은 전구체를 소성하여 barium hexaaluminate를 제조하였다. 복합 알콕사이드 합성시 알코올의 종류 및 양, 반응시간을 변화시켜 barium hexaaluminate 전구체 물성에 미치는 영향을 관찰하였으며, 가수 분해시 물의 양 및 반응온도, 그리고 숙성시간에 따른 barium hexaaluminate의 비표면적과 입자크기에 미치는 영향을 알아보았다.