Studying the synthesis regularities of adsorbents based on the oxides Li4Ti5O12 and Li2TiO3
https://doi.org/10.29235/1561-8323-2024-68-2-118-128
Abstract
Using solid-phase, hydrothermal and sol-gel synthesis methods, adsorbents based on double oxides Li2TiO3 and Li4Ti5O12 were obtained. The influence of the synthesis conditions of samples on their phase composition, surface morphology, texture and adsorption properties was studied. It has been established that as a result of solid-phase synthesis reactions initiated by heating at 700 and 800 °C, single-phase oxides Li4Ti5O12 and Li2TiO3 are obtained, the values of the parameter a of the crystal lattice of which are close to the reference data and are 8.289 and 5.026 Å, respectively. The samples have a macromesoporous texture and have a low specific surface area (8 and 9 m2/g) and a mesopore volume (0.01 and 0.02 cm3/g). The adsorption capacity of the obtained oxides Li4Ti5O12 and Li2TiO3 reaches 7.9 and 6.3 mmol/g, respectively. The obtained oxides are of interest for further research as selective adsorbents of Li+ ions.
About the Authors
A. I. Ivanets
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Andrei I. Ivanets – Corresponding Member, D. Sc. (Chemistry), Professor, Leading Researcher
9/1, Surganov Str., 220072, Minsk
E. S. Bicheva
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Ekaterina S. Bicheva – Postgraduate Student, Junior Researcher
9/1, Surganov Str., 220072, Minsk
V. G. Prozorovich
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Vladimir G. Prozorovich – Researcher
9/1, Surganov Str., 220072, Minsk
T. F. Kouznetsova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Tatyana F. Kouznetsova – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
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