Structure and Properties of Syntetic Layered Lithium-Containing Silicates
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A crystallochemical analysis of synthetic layered lithium-containing silicates has been performed. It is shown that these compounds have unique properties and structural characteristics. According to the X-ray diffraction data, the initial material possess a layered structure. After filling the material with ethylene glycol, the intensity of the reflection corresponding to the interplanar spacing d001 = 12.3 Å significantly decreased, and two additional peaks arose: strong (d = 16.8 Å) and weak (d = 14.7 Å), which indicates possible presence of three layered phases with different sorption properties in the sample. The samples easily absorb moisture from air. The range of stretching vibrations of OH groups in the IR spectra of synthesized samples corresponds to the spectrum of adsorbed water.
We are grateful to T.N. Grigor’eva for supplying samples and giving valuable consultations during their study, D.P. Pishchur (Institute of Inorganic Chemistry, SB RAS) for carrying out the DSC analysis, and N.V. Abrosimova for determining the lithium content in the samples.
Instrumental investigations were performed at the Analytical Center for Multielement and Isotope Studies (SB RAS).
This study was performed within a government contract (project no. 0330-2016-0017) and supported by the Federal Agency for Scientific Organizations.
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