Estimation of diffusion parameters in functionalized silicas with modulated porosity. Part I: chromatographic studies.

@article{Armatas2005EstimationOD,
  title={Estimation of diffusion parameters in functionalized silicas with modulated porosity. Part I: chromatographic studies.},
  author={Gerasimos S. Armatas and Dimitrios E Petrakis and Philippos J. Pomonis},
  journal={Journal of chromatography. A},
  year={2005},
  volume={1074 1-2},
  pages={
          53-9
        }
}
The diffusion parameters of binary gas mixture He (tracer gas)-N2 (carrier gas) in hybrid organic-inorganic SiO2-X porous solids which have suffered gradual functionalization with functional groups X of increasing length (X = psi, [triple bond]Si-H, [triple bond]Si-CH2OH, [triple bond]Si-(CH2)3OH, [triple bond]Si-(CH2)11CH3) are reported. The effective diffusivities Deff, the Henry law constants K as well as the tortuosity factors tau for the examined solids were estimated by a typical pulse… CONTINUE READING
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