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Clays and Clay Minerals; February 2004; v. 52; no. 1; p. 40-46; DOI: 10.1346/CCMN.2004.0520105
© 2004 Clay Minerals Society
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PREPARATION AND CHARACTERIZATION OF L-ASPARTIC ACID-INTERCALATED LAYERED DOUBLE HYDROXIDE

Qi Yuan1, Min Wei1, Zhiqiang Wang2, Ge Wang1 and Xue Duan1,*

1 Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
2 Department of Chemistry, Tsinghua University, Beijing 100084, PR China

* E-mail address of corresponding author: duanx{at}mail.buct.edu.cn

L-aspartic acid was intercalated into layered double hydroxides by coprecipitation. Two types of well crystallized material were obtained and were characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetry, differential thermal analysis and polarimetry. Schematic models of two intercalation structures with different basal spacings are given. It is proved that the optical activity of L-aspartic acid is retained during and after the intercalation process.

Key Words: Chiral Molecule • Coprecipitation • L-aspartic Acid • Layered Double Hydroxides • Intercalation






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