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Selective liquid adsorption on dodecylpyridinium clay by HPLC

Published online by Cambridge University Press:  09 July 2018

M. Stul
M. Stul*
Affiliation:
Centrum voor Oppervlakte-en Colloidale Scheikunde, De Croylaan 42, B-3030 Heverlee, Brussels, Belgium
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Extract

Traditionally, adsorption from binary solutions is determined as the difference between the adsorbate concentration in the solution before and after contacting with the solid adsorbent e.g. hexadecylpyridinium-clay. this is essentially a static method. The bulk composition can be measured by means of a differential liquid interferometer (Dékány et al., 1978b) or by gas chromatography (Nikulitchev et al., 1979). The specific excess adsorption of the mixtures, n1°, is then calculated as (Kipling, 1965):

1

where n0 is the total amount of the liquid mixture referred to unit mass of the adsorbent (mmol/g adsorbent), xl,0 is the mole fraction of the ith component before adsorption, and xi is the mole fraction of the ith component in the equilibrium homogeneous liquid phase.

Type
Notes
Information
Clay Minerals , Volume 17 , Issue 4 , December 1982 , pp. 483 - 486
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1982

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References

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