| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Effect of Alkali Metal Ions for Mesoporous Silica with Crystalline Mesopore Walls |
| 초록 |
Mesoporous silica materials with crystalline walls and large pore size were produced via thermal treatment of SBA-15 using alkali and alkali earth metal ions (Na+, Li+, K+, and Ca2+). The effect of alkali metal ions was investigated with different ratios of alkali metal ions (Si/metal ion=2.1 to 80) and different temperature (500~700 oC). The crystalline SiO2 structures (i.e. cristobalite and quartz) in pore walls were produced in the range of Si/Na=2.1 to 40 at 700 oC. With the increase of Na+ amount (i.e. Si/Na=80 to 40), mesopore size was increased remarkably from 48.3 Å to 983.7 Å. After thermal treatment at 700 oC of SBA-15 with Li+, K+ and Ca2+ ions (Si/metal ion=40), interestingly, the SBA-15 treated with Ca2+ ions exhibited crystalline SiO2 of quartz structure with pore diameter of 802.5 Å, whereas the SBA-15 treated with K+ and Li+ ions didn’t have any crystalline SiO2 structures in pore walls. |
| 저자 |
박성수1, 추상욱1, Liyi Shi2, Shuai Yuan2, 하창식1
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| 소속 |
1부산대, 2Shanghai Univ. |
| 키워드 |
Mesoporous Silica; Alkali Metal Ions; Crystalline Walls
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| E-Mail |
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