| 학회 |
한국공업화학회 |
| 학술대회 |
2012년 봄 (05/09 ~ 05/11, 김대중컨벤션센터) |
| 권호 |
16권 1호 |
| 발표분야 |
나노 |
| 제목 |
Characterization of calcium ion-exchanged silica gel prepared in an aqueous solution |
| 초록 |
In this study, calcium ion exchanged silica was prepared by modifying sodium silicate-based silica gel in an aqueous solution of Ca(OH)2. Silica gel was treated in Ca(OH)2 solution at concentrations ranging from 2 to 20 g/L and aged at 25, 60, and 90 oC for 40 min. The BET surface area of the silica gel decreased while its pore size increased considerably after modification in Ca(OH)2 solution. The pH of 5% calcium-doped silica in water ranged from about 8.5 to 10. When the concentration of the Ca(OH)2 solution was 20%, needle-like crystals of calcium silicate hydrate formed over the surface of silica gel. |
| 저자 |
Dang Viet Quang1, 김종길2, Gideon Elineema1, Godlisten N. Shao1, 김희택1
|
| 소속 |
1한양대, 2E&B Nanotech |
| 키워드 |
Silica gel; Calcium silicate hydrate; Calcium-doped silica; Anticorrosion
|
| E-Mail |
|
