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Preparation and enantiosorption of L-aspartic acid pillared hydrotalcites

  • Peng Xia-hui  (彭霞辉)Email author
  • Huang Ke-long  (黄可龙)
Article
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Abstract

L-aspartic acid (Asp) pillared hydrotalcites were prepared by direct reaction of the L-Asp anion with layered double hydroxides (LDHs). The obtained samples were characterized by X-ray diffractometry (XRD), Fourier transform infrared (FTIR), and thermogravimetric and differential thermal analysis (TG/DTA). The results show that the initial interlayer carbonate ions can be completely replaced by the L-Asp anion under the controlled conditions. The pillared hydrotalcites have a crystallized supramolecular structure and thermal stability. The L-Asp pillared LDHs were used in the enantiosorption of enantiopure phenylalanine (Phe), the results suggest that L-Asp pillared LDHs exhibit an excellent enantiosorption capability for D-Phe, and the adsorption isotherm fits Freundlich equation.

Key words

L-aspartic acid hydrotalcites preparation enantiosorption phenylalanine 

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Copyright information

© Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Peng Xia-hui  (彭霞辉)
    • 1
    • 2
    Email author
  • Huang Ke-long  (黄可龙)
    • 2
  1. 1.Department of Chemistry and Environment ScienceChangsha UniversityChangshaChina
  2. 2.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina

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