Pore size design of ordered mesoporous silicas by controlling micellar properties of triblock copolymer EO(20)PO(70)EO(20)
文献类型：期刊论文
| 作者 | W. H. Zhang ; L. Zhang ; J. H. Xiu ; Z. Q. Shen ; Y. Li ; P. L. Ying ; C. Li |
| 刊名 | Microporous and Mesoporous Materials
 |
| 出版日期 | 2006 |
| 卷号 | 89期号:1-3页码:179-185 |
| 关键词 | synthesis mesoporous materials micelle pore size salt effect surfactant differential scanning calorimetry molecular-sieves aqueous-solutions block-copolymer micellization surfactants templates oxide salts replication |
| ISSN号 | 1387-1811 |
| 中文摘要 | The pore sizes of SBA-15 materials have been reduced continuously by controlling the micelle properties of block copolymer EO(20)PO(70)EO(20) (P123) using the cationic surfactant cetyltrimethylammonium bromide (CTAB) as co-template, and the NH(4)F and KCl as inorganic additives. The resulting SBA-15 materials have been characterized by X-ray diffraction (XRD) patterns, N(2) physical sorption isotherms, and transmission electron microscopy (TEM). Experiments show that the pore sizes of SBA-15 decrease continuously from 8.49 nm to 4.78 nm with the increase of CTAB contents. However, the increase of CTAB contents results in lower structural ordering of the SBA-15 materials synthesized. The addition of F(-) dramatically improves the structural periodicity, but enlarges the pore sizes of the materials at the same time. In contrast, the introduction of KCl into the synthetic system can improve the structural ordering without evident effect on the pore sizes. It is suggested that the changes of micellar properties caused by the auxiliaries (CTAB, KCl, NH(4)F) should be responsible for the variation of the pore sizes of the resultant SBA-15. (c) 2005 Elsevier Inc. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34712]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | W. H. Zhang,L. Zhang,J. H. Xiu,et al. Pore size design of ordered mesoporous silicas by controlling micellar properties of triblock copolymer EO(20)PO(70)EO(20)[J]. Microporous and Mesoporous Materials,2006,89(1-3):179-185. |
| APA | W. H. Zhang.,L. Zhang.,J. H. Xiu.,Z. Q. Shen.,Y. Li.,...&C. Li.(2006).Pore size design of ordered mesoporous silicas by controlling micellar properties of triblock copolymer EO(20)PO(70)EO(20).Microporous and Mesoporous Materials,89(1-3),179-185. |
| MLA | W. H. Zhang,et al."Pore size design of ordered mesoporous silicas by controlling micellar properties of triblock copolymer EO(20)PO(70)EO(20)".Microporous and Mesoporous Materials 89.1-3(2006):179-185. |
入库方式： OAI收割
来源：金属研究所
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。