Aluminum Iso-Propoxide에 의한 구형 알루미나 분체의 제조

• 영문명: Preparation of Spherical Alumina Particle from Aluminum Iso-Propoxide
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 이진화(Lee, Jin-Hwa) 남기대(Nam, Ki-Dae) 이동규(Lee, Dong-Kyu)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제16권 제2호, 163~170쪽, 전체 8쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 1999.06.30

영문 초록

Spherical alumina powders were prepared by the controlled hydrolysis of aluminum iso-propoxide in a solution consisting of n-octyl alcohol and acetonitrile. As aluminum alkoxide s concentration increased, the particle size was increased and size distribution was more broad. As-prepared particle morphology was not spherical when acetonitrile volume fraction was increased over than 60%. As-prepared amorphous powders crystallized to ${\gamma}$ 수식 이미지-alumina at $1000^{\circ}C$ 수식 이미지 and converted to ${\alpha}$ 수식 이미지-alumina at $1150^{\circ}C$ 수식 이미지. The particle morphology was retain after crystallization ${\alpha}$ 수식 이미지-alumina. When aluminum iso-propoxide was used as aluminum source, the optimum preparation condition of spherical alumina was 0.1M AIP, 0.2M H2O, $0.1g/{\ell}$ 수식 이미지 HPC with a volume fraction (1/1) of the n-octyl alcohol/acetonitrile, 10min of reaction time and 30min of aging time.