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