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.
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Foundation item: Project(20376085) supported by the National Natural Science Foundation of China; Project(05C053) supported by Education Department of Human Province, China
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Peng, Xh., Huang, Kl. Preparation and enantiosorption of L-aspartic acid pillared hydrotalcites. J Cent. South Univ. Technol. 14, 520–523 (2007). https://doi.org/10.1007/s11771-007-0101-5
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DOI: https://doi.org/10.1007/s11771-007-0101-5