Surface Properties of Zirconia-based Supports for HPLC

Abstract

Abstract: The surface properties of zirconia-based supports,ZrO₂/SiO₂ and ZrO₂,were compared.ZrO₂/SiO₂ prepared by layer-by-layer self-assembly(LbL SA) technique showed more favorable characteristics for HPLC applications compared with ZrO₂ prepared by modified oil-emulsion method.The specific surface area and pore volume of ZrO₂/SiO₂ were about 18 and 20 times of those of ZrO₂ respectively.The pore of ZrO₂/SiO₂ support was ideal cylindrical shape,but ZrO₂ support had some \!ink bottle\" shaped-pores which was unfavorable for HPLC separations.Pore size distribution of ZrO₂/SiO₂ supports was more uniform than that of ZrO₂ supports.

Key words: Zirconia-based HPLC supports, Molecular self-assembly technique, Surface property, ZrO₂/SiO₂, ZrO₂

CLC Number:

O658

TrendMD:

DUN Hui-Juan, WEI Yu, SONG Xiu-Qin, CHEN Li-Ren. Surface Properties of Zirconia-based Supports for HPLC[J]. Chem. J. Chinese Universities, 2005, 26(11): 2040.

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Surface Properties of Zirconia-based Supports for HPLC

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