Xylitol Separation from a Polyol Mixture Using Lanthanide Ion-loaded Resins

Yusuke Kitamura; Rika Shobu; Hirotaka Matsuura; Akinori Jyo; Toshihiro Ihara

doi:10.2116/analsci.19N032

Xylitol Separation from a Polyol Mixture Using Lanthanide Ion-loaded Resins

Anal Sci. 2020 Jun 10;36(6):769-773. doi: 10.2116/analsci.19N032. Epub 2020 Jan 10.

Authors

Yusuke Kitamura¹, Rika Shobu¹, Hirotaka Matsuura¹, Akinori Jyo¹, Toshihiro Ihara²

Affiliations

¹ Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto, 860-8555, Japan.
² Division of Materials Science and Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto, 860-8555, Japan. toshi@chem.kumamoto-u.ac.jp.

PMID: 31932521
DOI: 10.2116/analsci.19N032

Abstract

Xylitol separation from a polyol mixture of the byproducts from bioethanol production processes was performed by liquid chromatography using short columns packed with lanthanide ion-loaded ion-exchange resins. Xylitol was successfully separated with sufficiently high resolution using adsorbents with medium rare-earth metal ions, such as Nd³⁺ and Sm³⁺. The adsorbents' specific nature is explained by the so-called "gadolinium break," which is known as a discontinuous behavior of thermodynamic parameters in complexation of the lanthanide series. From the observed behavior, the optimum lanthanide ions could be chosen to prepare appropriate adsorbents for ligand-exchange chromatography of given polyol mixtures.

Keywords: AG 50W-X4; Monosaccharide; bioethanol; gadolinium break; ion-exchange resin; lanthanide; ligand exchange; liquid chromatography; polyol; rare-earth metal.