| PICA法合成介孔二氧化硅研究 |
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| 引用本文： | 盛凤军,林保平.PICA法合成介孔二氧化硅研究[J].化工时刊,2007,21(10):1-3. |
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| 作者姓名： | 盛凤军 林保平 |
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| 作者单位： | 1. 东南大学化学化工学院,江苏,南京,211189;江苏广播电视大学宜兴学院,江苏,宜兴,214206
2. 东南大学化学化工学院,江苏,南京,211189 |
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| 摘 要： | 以硅酸钠为硅源,在酸性条件下,通过尿素和甲醛的缩聚反应,用诱导聚合胶体团聚法(PICA)制备出单分散脲醛/SiO2复合微球,并经高温煅烧制得介孔二氯化硅。通过X射线衍射(XRD)、氮气脱吸附、透射电镜(TEM)和高分辨透射电镜(HRTEM)等手段对介孔二氧化硅进行了表征。结果表明,通过PICA法制得的介孔二氧化硅有序性好,孔径较大、孔壁较厚、孔径分布均匀。
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| 关 键 词： | 诱导聚合胶体团聚法(PICA法) 介孔二氧化硅 复合微球 |
| 收稿时间： | 2007-09-03 |
| 修稿时间： | 2007年9月3日 |
Preparation for SiO2 Microspheres by PICA Method |
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| Sheng Fengjun,Lin Baopin.Preparation for SiO2 Microspheres by PICA Method[J].Chemical Industry Times,2007,21(10):1-3. |
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| Authors: | Sheng Fengjun Lin Baopin |
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| Affiliation: | College of Chemistry and Chemical Engineering, Southeast University, Jiangsu Nanjing 214206 |
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| Abstract: | By using sodium silicate as silica source,the urea-formaldehyde(UF) polymer/SiO2 composite microspheres were prepared by polymerization-induced colloid aggregation(PICA) method in acidic media,and the mesoporous silica synthesized by calcined.The characteristics of the mesoporous silica particles were characterized by X-ray diffraction(XRD),nitrogen adsorption and sorption,transmission electron microscopy(TEM)and high resolution transmission electron microscopy(HRTEM).The results showed that the samples had uniform mesoporous distribution,larger pore diameter and thicker wall. |
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| Keywords: | polymerization-induced colloid aggregation(PICA) mesoporous silica composite microsphere |
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