A chromatographic comparison of the pore structures of zirconia high performance liquid chromatographic materials made by the polymerization induced colloidal aggregation and the oil emulsion methods

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Abstract

The pore structures of zirconium oxide particles prepared by two different methods (PICA and Oil Emulsion processes) are compared. Nitrogen sorptometry and size exclusion chromatography are used to characterize the two different types of particles. Significant and unexpected differences were found in the accessible pore volumes and the bed packing densities of the two materials. The PICA material was found to have a higher totally included and totally excluded volume than would be normally expected. The chromatographic method provides results which are more useful for the application of these materials to separation science.

Original languageEnglish (US)
Pages (from-to)273-282
Number of pages10
JournalChromatographia
Volume42
Issue number5-6
DOIs
StatePublished - Apr 11 1996

Keywords

  • Column liquid chromatography
  • Nitrogen sorptometry
  • Pore structure
  • Size exclusion chromatography
  • Zirconium oxide

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