PAN Guo-xiang1, Chen Jian1,2, SHENG Ou-wei1, ZHANG Yu-jian1, CAO Feng1, NI Zhe-ming2
(1. Department of Materials Chemistry, Huzhou University, Huzhou 313000, China;
2. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China)
Abstract: Three types of Mg-Mn layered double hydroxides with molar ratios of 2:1, 3:1, and 4:1 were synthesized by an oxidation precipitation method. The structure of synthesized samples was characterized by X-ray powder diffraction, infrared spectroscopy and thermo gravimetric-differential thermal analysis. The results show that Mg/Mn layered double hydroxides with varying Mg-Mn molar ratios can be successfully prepared by oxidation precipitation, and the obtained layered double hydroxides has a complete structure and single crystal phase. The synthetic Mg3Mn layered double hydroxides as a precursor for calcined products and the mechanism of phase variation of composition at different temperatures is also discussed.
Keywords: Mg-Mn layered double hydroxides; oxidation precipitation; thermal decomposition; structure; characterization
Email: pgxzjut@163.com
ACTA MINERALOGICA SINICA Vol. 35, No. 2, 2015, Page 113-116
