| Issue |
Korean Journal of Chemical Engineering,
Vol.30, No.4, 918-924, 2013
Vol.30, No.4, 918-924, 2013
Chiral adsorption of phenylalanine by α-, β-cyclodextrin modified layered double hydroxides
The chiral adsorption of racemic phenylalanine (Phe) by carboxymethyl-α/β-cyclodextrin-intercalated Zn-Al layered double hydroxides (CM-α/β-CD-LDHs) has been studied. The adsorption isotherms of chiral excess adsorption and the total adsorption of Phe by these CM-α/β-CD-LDHs have been investigated. CM--CD-LDHs were found to be more suitable for chiral recognition of Phe than CM--CD-LDHs. Furthermore, the intraparticle diffusion model is successfully validated in this work. Intraparticle effective diffusivities (Deff) of Phe in these CM-α/β-CD-LDHs macroparticles were determined from the homogeneous Fickian diffusion model at various temperatures.
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