色谱

色谱

• 研究论文 • 上一篇    下一篇

乙烷桥键介孔材料的制备及其在反相液相色谱中的应用

朱桂茹,杨启华,李灿   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • 收稿日期:2007-01-10 修回日期:2007-02-09 出版日期:2007-07-30 发布日期:1985-06-25
  • 通讯作者: 杨启华

Synthesis of Periodic Mesoporous Ethanesilica and Its Application in High Performance Liquid Chromatography

ZHU Guiru, YANG Qihua, LI Can   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2007-01-10 Revised:2007-02-09 Online:2007-07-30 Published:1985-06-25

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摘要： 以1,2-二(三甲氧基硅基)-乙烷为硅源、聚氧乙烯-聚氧丙烯-聚氧乙烯三嵌段共聚物(EO20PO70EO20,P123)为模板剂、十六烷基三甲基溴化铵(CTAB)为共模板剂、乙醇为共溶剂，在酸性条件下合成了一种乙烷桥键有序介孔材料(PME)。研究表明,该PME具有高的比表面积(1152 m2/g)、高度有序的孔结构(二维六方相)、窄的孔径分布及表面光滑的球形形貌。将该PME不经化学改性直接用作反相高效液相色谱固定相,能够有效分离5种多环芳香族化合物(苯、萘、联苯、菲和芘)。

关键词: 反相高效液相色谱 , 微球, 乙烷桥键有序介孔材料, 制备

Abstract:

The periodic mesoporous ethanesilica (PME) was synthesized in acidic medium by the condensation of 1,2-bis(trimethoxysily) ethane (BTME) using triblock copolymer EO20PO70EO20 (P123) as template, cetyltrimethylammonium bromide (CTAB) as co-surfactant and ethanol as co-solvent. The results of nitrogen-sorption measurement, powder X-ray diffraction (XRD), and scanning electron microscopy (SEM) show that the PME has high surface area (1152 m2/g), narrow pore-size distribution, ordered pore structure, and spherical morphology. The spherical PME without further chemical modification was used as the stationary phase in reversed-phase high performance liquid chromatography. Highly efficient and rapid separation of the mixture of polycyclic aromatic hydrocarbons (benzene, naphthalene, biphenyl, phenanthrene and pyrene) was obtained on the column packed with the PME.

Key words: reversed-phase high performance liquid chromatography (RP-HPLC) , sphere, synthesis, periodic mesoporous ethanesilica