| 학회 | 한국화학공학회 |
| 학술대회 | 2005년 가을 (10/21 ~ 10/22, 인하대학교) |
| 권호 | 11권 2호, p.2590 |
| 발표분야 | 재료 |
| 제목 | Architecture of Silica-Intercalated Hydrotalcites with Porous Structure |
| 초록 | Hydrotalcites are formally derived from layered double hydroxides (LDHs), general formula [M2+1-xM3+x(OH)2](An-)x/x•mH2O, consisting of positively charged brucite, Mg(OH)2, and the charge compensating interlayer exchangeable anions. The anion exchangeable LDHs with positively charged lamellar and exchangeable hydrate gallery have attracted much attention as a starting material of pillared layered solid to mimic zeolite-type structure possessing larger and more modifiable pores and active sites. Under mild temperature, Si-intercalated hydrotalcites, SiO2/LDH=(0.1-1), were prepared successfully as mesopore framework pahse at 0.4-0.8 oPXRD pattern and about 450 m2•g-1 and 0.35 cm3•g-1 at BET surface area and pore volume. The intercalation of silicate anions in hydrotalcite exhibited more thermal stability to 550oC than the lamellar structure being maintained up to 400oC. These suggest the formation of new pore framework by a strong interaction of silicate anions into the LDH inner-surface with the interlayer carbonate or hydroxyl groups. |
| 저자 | 김명훈1, 장석흥1, 강일모1, 송윤구1, 이영호2, 박진원1, 이명수1 |
| 소속 | 1연세대, 2요업기술(연) |
| 키워드 | hydrotalcite; LDHs; interlayer; intercalate; mesoporous; polymerization |
| 원문파일 | 초록 보기 |
