Synthesis of Large-Pore Silica Microspheres Using Dodecylamine as a Catalyst, Template and Porogen Agent

被引：0
作者：
Lingping Cheng
Jianfeng Cai
Yanxiong Ke
机构：
[1] East China University of Science and Technology,Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education
来源：
Journal of Inorganic and Organometallic Polymers and Materials | 2019年 / 29卷
关键词：
Dodecylamine; Sol–gel process; Mesoporous silica spheres; HPLC;
D O I：
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中图分类号：
学科分类号：
摘要：
This paper reports a strategy combing a modified Stöber method and a post-hydrothermal treatment for the fabricating of silica microspheres with large pores. Dodecylamine (DDA), used as a catalyst, template and porogen agent, plays an important role in controlling both the particle morphology and the pore expansion. By adjusting the concentration of DDA (20, 40 and 80 mmol/L) and the temperature of hydrothermal treatment (80–140 °C), the pore size ranging from 3.5 to 16 nm could be obtained. The synthesized sub-2 µm silica spheres were modified with dimethyloctadecylchlorosilane (C18) and successfully applied for the separation of aromatic compounds in high-performance liquid chromatography (HPLC). The silica may be a good candidate as HPLC packing materials.
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页码：1417 / 1421
页数：4
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