| 二次催化溶胶-凝胶法制备多孔硅胶微球 |
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| 引用本文： | 赵贝贝,许婵婵,唐涛,李彤,张维冰,王风云. 二次催化溶胶-凝胶法制备多孔硅胶微球[J]. 无机材料学报, 2011, 26(10): 1090-1094. DOI: 10.3724/SP.J.1077.2011.01090 |
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| 作者姓名： | 赵贝贝 许婵婵 唐涛 李彤 张维冰 王风云 |
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| 作者单位： | (1. 南京理工大学 工业化学研究所, 南京210094; 2. 胜利石油管理局钻井工艺研究院, 东营 257017; 3. 大连依利特分析仪器有限公司, 大连116023; 4. 华东理工大学 化学与分子工程学院, 上海 200237) |
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| 基金项目： | 江苏省科技支撑计划项目(BE2010731); 大连市科学技术基金(2009J22DW015)~~ |
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| 摘 要： | 以四乙氧基硅烷(TEOS)为原料, N,N-二甲基甲酰氨(DMF)为模板, 采用二次催化的溶胶-凝胶法制得微米级多孔性硅胶微球. 考察了一次催化水解缩聚过程中水量、乙醇量, 二次催化反应过程中电解质浓度、搅拌速度对微球粒径的影响, 并采用扫描电子显微镜(SEM)、激光粒度分布仪、比表面及孔径分析仪、显微镜-图像颗粒分析系统进行表征. 结果表明, 制得硅胶微球球形规则且无团聚现象, 平均粒径(D50)为8.9μm, 粒径呈典型高斯分布, 比表面积546.67m2/g, 孔体积0.7142m3/g, 孔径主要分布在2~8nm之间, 分布范围窄; 硅胶微球粒径大小随一次催化过程中水量、乙醇量及二次催化过程中电解质浓度增加而增大, 随乳状液形成过程中搅拌速度加快而减小.
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| 关 键 词： | 硅胶微球 二次催化 溶胶-凝胶法 |
| 收稿时间： | 2010-11-25 |
| 修稿时间： | 2011-01-17 |
Preparation of SiO_2 Microspheres by Two-step Catalytic Sol-Gel Method |
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| ZHAO Bei-Bei,XU Chan-Chan,TANG Tao,,LI Tong,ZHANG Wei-Bing,,WANG Feng-Yun. Preparation of SiO_2 Microspheres by Two-step Catalytic Sol-Gel Method[J]. Journal of Inorganic Materials, 2011, 26(10): 1090-1094. DOI: 10.3724/SP.J.1077.2011.01090 |
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| Authors: | ZHAO Bei-Bei XU Chan-Chan TANG Tao LI Tong ZHANG Wei-Bing WANG Feng-Yun |
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| Affiliation: | (1. Institute of Industrial Chemistry, Nanjing University of Science and Technology, Nanjing 210094, China; 2. Research Institute of Drilling Technology, Shengli Petroleum Administration of Sinopec, Dongying 257017, China; 3. Dalian Elite Analytical Instruments Co., Ltd., Dalian 116023, China; 4. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China) |
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| Abstract: | Micrometer SiO2 microspheres were prepared by two-step catalytic Sol-Gel method with tetraethoxysi-lane(TEOS) as starting material and N,N-Dimethylformamide(DMF) as template.The effects of some factors on the diameter and particle size distribution of the SiO2 microspheres were discussed,such as H2O quantity and etha-nol quantity during the first catalytic process,the electrolyte concentration and stirring speed during the secondary catalytic process.SiO2 microspheres were characterized by SEM,Zetasizer,BET... |
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| Keywords: | SiO2 microspheres two-step catalysis Sol-Gel method |
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