| SiO2-AEO凝胶体系的织构特性 |
| |
| 引用本文： | 孙继红,吴东,孙予罕,杨年华,周建伟,岳勇. SiO2-AEO凝胶体系的织构特性[J]. 物理化学学报, 2000, 16(2): 121-125. DOI: 10.3866/PKU.WHXB20000206 |
| |
| 作者姓名： | 孙继红 吴东 孙予罕 杨年华 周建伟 岳勇 |
| |
| 作者单位： | State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences Wuhan 430071 |
| |
| 基金项目： | 国家杰出青年科学基金(29625307)和国家自然科学基金(29973057)资助项目 |
| |
| 摘 要： | 采用溶胶－凝胶法，以正硅酸乙酯（ＴＥＯＳ）为前驱体，用脂肪醇聚氧乙烯醚（ＡＥＯ）为改性剂制备结构可控的多孔ＳｉＯ２干凝胶。结果表明：通过调节添加量和聚合度以及溶胶老化时间可以对ＳｉＯ２干凝胶织构性质进行有效的调控；采用不同的环境气候对ＳｉＯ２－ＡＥＯ干凝胶进行热处理，则ＡＥＯ表现出不同的热稳定性；经热处理后，ＡＥＯ等有机残留物被脱除的同时，ＳｉＯ２－ＡＥＯ干凝胶柔性骨架得到加强，孔分布更趋集中，干
|
| 关 键 词： | 脂肪醇聚氧乙烯醚(SEO) SiO2-AEO 孔分子 TG-DTA |
| 收稿时间： | 1999-05-27 |
| 修稿时间： | 1999-05-27 |
Textural Characterizationof SiO2-AEO Xerogels |
| |
| Sun Jihong. Textural Characterizationof SiO2-AEO Xerogels[J]. Acta Physico-Chimica Sinica, 2000, 16(2): 121-125. DOI: 10.3866/PKU.WHXB20000206 |
| |
| Authors: | Sun Jihong |
| |
| Affiliation: | State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001|State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences Wuhan 430071 |
| |
| Abstract: | The porous SiO2 xerogels with controlled texture were obtained from TE OS in the presence of AEO by sol gel method. It was found that the addition amount and molecular weight of AEO and ageing time of SiO2 AEO sol could adjust the textural properties of SiO2 xerogels, and AEO in the xerogel had different thermal stability when the SiO2 AEO xerogel being heated under different atmospheres .As a result, It has been found that the SiO2 xerogel showed stronger flexible skeleton, narrower pore distribution, and higher thermal stability after heat treatment. |
| |
| Keywords: | AEO SiO2-AEO Pore size distribution TG-DTA |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
|
点击此处可从《物理化学学报》下载全文 |
