通过聚合物表面活性剂与小有机铵的混合物在高温下设计与合成具有高二氧化硅缩合度的有序介孔二氧化硅材料。

Design and synthesis of ordered mesoporous silica materials with high degree of silica condensation at high temperature from a mixture of polymer surfactant with small organic ammonium.

作者信息

Wang Chunyu, Du Yunchen, Li Defeng, Guan Xiangyu, Li Fei, Xiao Feng-Shou

机构信息

Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130012, China.

出版信息

J Colloid Interface Sci. 2008 Mar 1;319(1):370-3. doi: 10.1016/j.jcis.2007.11.042. Epub 2007 Dec 4.

DOI:10.1016/j.jcis.2007.11.042

PMID:18082176

Abstract

Thermal stability on a mixture of triblock polymer (P123) and fluorocarbon surfactant (FC-4) in acidic media for synthesis of ordered mesoporous materials has been carefully investigated by NMR spectroscopy at various treated temperatures (RT-180 degrees C) and the templating mechanism of the mixture on high-temperature synthesis has been proposed. Accordingly, we have designed fluorocarbon-free templates for syntheses of ordered mesoporous silica materials at high temperatures. As expected, ordered mesoporous silica materials with high degree of silica condensation are synthesized at high temperatures from these designed templates.

摘要

通过核磁共振光谱在不同处理温度（室温至180摄氏度）下仔细研究了用于合成有序介孔材料的三嵌段聚合物（P123）和氟碳表面活性剂（FC-4）混合物在酸性介质中的热稳定性，并提出了该混合物在高温合成中的模板机制。因此，我们设计了无氟碳模板用于高温合成有序介孔二氧化硅材料。不出所料，利用这些设计的模板在高温下合成了具有高度二氧化硅缩合度的有序介孔二氧化硅材料。