新型杂化介孔硅胶色谱固定相的制备及应用
Preparation and chromatographic application of novel periodic mesoporous organosilicas.
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摘要: 采用1，2-二（三乙氧基硅基）乙烷和胺丙基三乙氧基硅烷为双硅源，阳离子表面活性剂十八烷基三甲基氯化铵（C18 TAC）为模板，在碱性条件下成功制备了一种新型胺丙基杂化介孔硅胶（APMO）。经粉末X-射线衍射法、傅里叶-红外光谱法和扫描电子显微镜等表征方法证明，APMO具有良好的单分散性微球形貌、有序介孔、比表面积大等优点，并将该介孔材料直接用作色谱固定相并进行色谱性能分析。结果表明，APMO自制柱通透性良好，能够有效分离3种多环芳香族化合物，在快速分离分析方面具有一定的优势。Abstract: Novel aminopropyl-functionalized periodic mesoporous organosilicas （APMO） were successfully prepared by co-condensation of 1，2-bis （triethoxysilyl） ethane （BTSE） and 3-aminopropyltriethoxysilane （APTES） with the template of cationic surfactants cetyltrimethylammonium chlorine （C18 TAC）in basic medium.With the characterization measurements of powder X-ray diffraction（XRD），FT-IR and scanning electron microscopy （SEM） so on，APMO had such advantages as good monodisperse microshperes，uniformly orderd mesopore and large specific surface areas.These mesoporous materials were directly considered to be the chromatographic stationary phases and analyzed by HPLC evaluation.During the research，the as-prepared APMO column had better permeability and three polycyclic aromatic compounds realized separation.In addition，the as prepared APMO column had certain advantages in fast analysis.
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Keywords:
- periodic mesoporous organosilicas /
- hydrid /
- stationary phase /
- chromatography
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