Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS
文献类型：期刊论文
| 作者 | Liu, Jian; Yang, Qihua; Zhao, X. S.; Zhang, Lei |
| 刊名 | microporous and mesoporous materials
 |
| 出版日期 | 2007-11-01 |
| 卷号 | 106期号:1-3页码:62-67 |
| 关键词 | mesoporous materials large pore size sodium silicate buffer solution |
| 产权排序 | 1;1 |
| 通讯作者 | 杨启华 |
| 英文摘要 | mesoporous silicas with large and tunable pore size (10-16nm) were successfully synthesized from mixtures of sodium silicate (na2sio3) and tetraethoxysilane (teos) in acetic acid/sodium acetate buffer solution (ph 4.4, hac-naac) using poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (eo20po70eo20, denoted as p123) as template, in which teos acts both as a swelling agent and a silica source. highly ordered 2-d hexagonal and mesostructured cellular foam structure with large pore size could be obtained using sodium silicate and teos as silica source, respectively. by adjusting the initial molar ratio of teos/(na2sio3+teos) from 0 to 0.5, the pore sizes of the final ordered 2-d hexagonal mesoporous silicas could be precisely tuned from 10 to 15 run. the large pore size (15 nm) of the material was attributed to the slow hydrolysis and polymerization rate of teos in the buffer solution. the presence of ethanol in the synthesis system also has strong effects on the mesostructure and pore size of the materials. (c) 2007 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | mesocellular foam ; temperature ; copolymer ; triblock ; sba-15 ; mechanism ; expanders ; design |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000251203400009 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/99185]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119620, Singapore |
| 推荐引用方式 GB/T 7714 | Liu, Jian,Yang, Qihua,Zhao, X. S.,et al. Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS[J]. microporous and mesoporous materials,2007,106(1-3):62-67. |
| APA | Liu, Jian,Yang, Qihua,Zhao, X. S.,&Zhang, Lei.(2007).Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS.microporous and mesoporous materials,106(1-3),62-67. |
| MLA | Liu, Jian,et al."Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS".microporous and mesoporous materials 106.1-3(2007):62-67. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。