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Double pore silica gel monolith applied to liquid chromatography

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Abstract

Silica gels retaining double pore structure in the size ranges of micrometer and nanometer have been applied to the rod-shaped monolithic column for liquid chromatography. The macropore structure was designed by controlling the phase separation process induced by the hydrolysis and polycondensation of alkoxysilane, whereas the mesopore structure was tailored by the solvent exchange treatments on wet gels. The size exclusion chromatograms on polystyrene standards exhibited almost similar features for octadecyl-modified rod and conventional packed beads columns. The dependence of plate height on the velocity of mobile phase determined for amylbenzene was by far weaker in the rod column than in the packed beads column, suggesting that additional geometrical factors should be considered in describing the separation mechanism in the rod column.

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Authors and Affiliations

  1. Division of Material Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Sakyo-ku, 60601, Kyoto, Japan

    K. Nakanishi, H. Minakuchi & N. Soga

  2. Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, 606, Kyoto, Japan

    N. Tanaka

Authors
  1. K. Nakanishi
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  2. H. Minakuchi
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  3. N. Soga
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  4. N. Tanaka
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Nakanishi, K., Minakuchi, H., Soga, N. et al. Double pore silica gel monolith applied to liquid chromatography. J Sol-Gel Sci Technol 8, 547–552 (1997). https://doi.org/10.1007/BF02436897

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  • DOI: https://doi.org/10.1007/BF02436897

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