| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
나노_포스터 |
| 제목 |
Synthesis of Rice Husk-Based Silica Aerogel at Ambient Pressure |
| 초록 |
Silica aerogel was synthesized from rice husk by sol-gel process followed by ambient pressure drying (APD). The conventional ways to produce silica aerogel have used costly silicon alkoxides and energy-intensive supercritical drying (SCD). The organic silicon sources and SCD hinder the large-scale production of the aerogel in terms of expenses and safety. Therefore utilizing inexpensive starting material and APD are needed. In experiments rice husk ash was obtained simply by calcination of rice husk and was extracted with sodium hydroxide solution. The mixed solution was neutralized using acid to form silica hydrosol. After gelation and aging, the prepared gel experienced solvent exchange and surface modification. The wet gel was dried at ambient pressure and then silica aerogel was attained. Our aim is to enhance the textural properties of the aerogel, such as specific surface area, pore size, and pore volume. This study proposes eco-friendly and cost-effective method to synthesize silica aerogel with excellent properties from rice husk via APD. |
| 저자 |
김희택, 박성수, SHAO GODLISTEN NAMWEL, 전순정, 반가람
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| 소속 |
한양대 |
| 키워드 |
Silica aerogel; Rice husk; Ambient pressure drying; Sol-gel process; Porous material
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| E-Mail |
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