Synthesis and physicochemical properties of adsorbents based on Li1.33Mn1.67O4
https://doi.org/10.29235/1561-8323-2023-67-1-27-37
Abstract
Adsorbents based on binary lithium-manganese oxides with the spinel structure of Li1.33Mn1.67O4 were synthesized by using solid-phase, sol-gel, and hydrothermal methods. The effect of the synthesis methods and calcination temperature on the crystal structure, phase composition, textural characteristics, and morphology of prepared adsorbents was established. It was found that the samples obtained by solid-phase and sol-gel methods and calcined at 600 °C were single-phase (Li1.33Mn1.67O4) while the Mn2O3 trace phase was also obtained only in hydrothermal synthesis. The increase in the average crystallite size and the decrease in the specific surface and the total volume of pores were observed during temperature rise in the range from 400 to 800 °C. The samples prepared by sol-gel and hydrothermal methods after at 600 °C calcination had the highest adsorption efficiency of Li+ ions.
Keywords
Supporting agencies: This work was done in the framework of a joint Belarusian-Uzbek project (BRFFR grant no. Х21УЗБГ-013). The authors are grateful to researchers of the Laboratory of Physical and Chemical Research and Agrochemical Testing IGIC NAS of Belarus Lyudmila Kulbitskaya and Olga Sychova for assistance in carrying out of XRD, FTIR and DTA-TG studies.
About the Authors
A. I. Ivanets
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Ivanets Andrei I. – Corresponding Member, D. Sc. (Chemistry), Professor, Leading Researcher
9/1, Surganov Str., 220072, Minsk
D. V. Pecheonсka
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Pecheonсka Darya V. – Postgraduate Student, Jounior Researcher
9/1, Surganov Str., 220072, Minsk
V. G. Prozorovich
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Prozorovich Vladimir G. – Researcher
9/1, Surganov Str., 220072, Minsk
T. F. Kouznetsova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Kouznetsova Tatyana F. – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
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