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）, Four...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 （Pile）, the results suggest that L-Asp pillared LDHs exhibit an excellent enantiosorption capability for D-Phe, and the adsorption isotherm fits Freundlich equation.展开更多
基金Project(20376085) supported by the National Natural Science Foundation of ChinaProject(05C053) supported by Education Department of Hunan Province, China
文摘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 （Pile）, the results suggest that L-Asp pillared LDHs exhibit an excellent enantiosorption capability for D-Phe, and the adsorption isotherm fits Freundlich equation.
