| 反相微乳液法制备不同形貌超细二氧化硅 |
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| 引用本文： | 沈淑玲,毋伟,郭锴,陈建峰. 反相微乳液法制备不同形貌超细二氧化硅[J]. 北京化工大学学报(自然科学版), 2007, 34(5): 504-507 |
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| 作者姓名： | 沈淑玲 毋伟 郭锴 陈建峰 |
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| 作者单位： | 北京化工大学,教育部超重力工程研究中心,北京,100029;北京化工大学,纳米材料先进制备技术与应用科学教育部重点实验室,北京,100029;北京化工大学,教育部超重力工程研究中心,北京,100029;北京化工大学,纳米材料先进制备技术与应用科学教育部重点实验室,北京,100029 |
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| 基金项目： | 国家自然科学基金 , 国家自然科学基金 |
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| 摘 要： | 在水/甲苯/十二烷基硫酸钠/正戊醇形成的四元Ｗ/Ｏ型微乳液中，通过渗透反应和融合反应分别合成了不同形貌的超细二氧化硅颗粒。利用相图研究了Ｗ/Ｏ型微乳液系统相行为稳定性与制备条件的关系。讨论了以反相微乳液为媒介，不同制备工艺及R值对产品形貌和粒径大小的影响，并对其机理进行了分析。
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| 关 键 词： | 反相微乳液 渗透 融合 相图 超细二氧化硅 |
| 修稿时间： | 2007-04-10 |
Preparation of ultrafine silica with different morphologies using reverse microemulsions |
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| SHEN ShuLing,WU Wei,GUO Kai,CHEN JianFeng. Preparation of ultrafine silica with different morphologies using reverse microemulsions[J]. Journal of Beijing University of Chemical Technology, 2007, 34(5): 504-507 |
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| Authors: | SHEN ShuLing WU Wei GUO Kai CHEN JianFeng |
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| Affiliation: | 1Research Center of the Ministry of Education for High Gravity Engineering and Technology; 2Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Ultrafine silica particles with different morphologies have been prepared in water/toluene/sodium dodecylsulphate/1-pentanol water in oil microemulsion systems by means of penetration reactions and amalgamation reactions.The phase diagrams for the W/O microemulsion were plotted to study the relationship between the W/O microemulsion composition and the preparation conditions.The effects of varying the process and the value of R(ratio by mass of water:(surfactant cosurfactant)) on the shape and size of the resulting silica particles were studied.A mechanism for the formation of ultrafine silica by the different reaction pathways has been proposed. |
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| Keywords: | reverse microemulsion penetration amalgamation phase diagrams ultrafine silica |
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