Mutual consistency between simulated and measured pressure drops in silica monoliths based on geometrical parameters obtained by three-dimensional laser scanning confocal microscope observations

Haruko Saito, Kazuki Nakanishi, Kazuyuki Hirao, Hiroshi Jinnai

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The geometrical properties of co-continuous macroporous silica monoliths have been studied by laser scanning confocal microscopy (LSCM) and a comparison has been made with those obtained by conventional mercury intrusion method. Tetrahedral skeleton model (TMS), which mimics the gel skeleton shape of monoliths, was compared with real monoliths in terms of macropore and porosity using the geometrical parameters extracted from the LSCM observations. Liquid flow behavior through the macroporous silica monoliths was examined in comparison with those simulated using TSM, based on the geometrical properties obtained from LSCM observations. Heterogeneity in macropore topology and connectivity in pores and skeletons are suggested to contribute to the improvement of the model structure for macroporous monoliths.

Original languageEnglish
Pages (from-to)95-104
Number of pages10
JournalJournal of Chromatography A
Volume1119
Issue number1-2
DOIs
Publication statusPublished - 2006 Jun 30
Externally publishedYes

Keywords

  • Flow resistance
  • Silica monolith
  • Structural paremeters
  • Tetrahedral skeleton model
  • Three-dimensional observation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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