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Title: Determination of competitive adsorption isotherms of enantiomers on a dual-site adsorbent
Authors: Lim, B.-G. 
Ching, C.-B. 
Tan, R.B.H. 
Keywords: Adsorption isotherm
Concentration pulse chromatography
Microcrystalline cellulose triacetate
Issue Date: Nov-1995
Citation: Lim, B.-G.,Ching, C.-B.,Tan, R.B.H. (1995-11). Determination of competitive adsorption isotherms of enantiomers on a dual-site adsorbent. Separations Technology 5 (4) : 213-228. ScholarBank@NUS Repository.
Abstract: The competitive adsorption isotherms of praziquantel enantiomers on microcrystalline cellulose triacetate were determined by concentration pulse chromatography. A model comprising a non-selective linear term and a selective first order improved Langmuir term was found to fit the data excellently. It is postulated that this chiral stationary phase consists of two types of binding sites: one responsible for the chiral, selective interactions and one responsible for the achiral, non-selective interactions of the enantiomers with the stationary phase. The selective sites are easily saturated compared to the non-selective sites, accounting for the experimental observation of lower separation efficiency at higher enantiomer concentrations. © 1995.
Source Title: Separations Technology
ISSN: 09569618
Appears in Collections:Staff Publications

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