Chiral Recognition of Lysine by Cyclodextrin Intercalated Layered Double Hydroxides

Abstract

The chiral sorption of racemic lysine by carboxymethyl-a-cyclodextrin intercalated layered double hydroxides has been studied. It was found that L-lysine was preferentially adsorbed by carboxymethyl-a-cyclodextrin intercalated layered double hydroxides. Furthermore, the intraparticle diffusion model was successfully validated in this work. Intraparticle effective diffusivities (D_eff) of lysine in carboxymethyl-a-cyclodextrin intercalated layered double hydroxides macroparticle were determined from the homogeneous Fickian diffusion model. Moreover, the crystallites diffusivity (D_c) and pore diffusivity (D_p) for the parallel diffusion model were determined.