Open AccessPreparation, properties and application of cerium(III) methanesulfonate
Author(s) -
V.G. Vereshchak,
Маргарита Скіба,
O.S. Baskevich,
Nadezhda Zholobak
Publication year - 2021
Publication title -
voprosy himii i himičeskoj tehnologii/voprosy himii i himičeskoj tehnologii
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.278
H-Index - 7
eISSN - 2413-7987
pISSN - 0321-4095
DOI - 10.32434/0321-4095-2021-138-5-30-36
Subject(s) - cerium , thermal decomposition , cerium oxide , methanesulfonic acid , differential scanning calorimetry , chemistry , inorganic chemistry , thermal analysis , oxide , decomposition , materials science , nuclear chemistry , thermal , organic chemistry , physics , meteorology , thermodynamics
Based on the results of physicochemical analysis, IR-spectroscopy, derivatographic analysis and differential scanning calorimetry, it was established that the interaction of cerium(III) carbonate with methanesulfonic acid yields cerium(III) methanesulfonate Се(SO3CH3)34H2O. Thermolysis of complex compound Се(SO3CH3)34H2O proceeds via a complex chemical mechanism and is completed at the temperature of 540–5500C producing nanocrystalline powders of cerium(IV) oxide having cubic structure with primary particle sizes of 20–30 nm, aggregate sizes of 50–200 nm and specific surface area of 62–68 m2 g–1. A probable mechanism of thermal decomposition of cerium(III) methanesulfonate is proposed, which depends on the temperature conditions of the thermal decomposition process. At low temperatures, the thermolysis of Се(SO3CH3)34H2O proceeds by the mechanism of surface oxidation with the formation of cerium oxide. At temperatures above 4500C, thermolysis is transformed into combustion with a significant heat effect and the formation of nanosized powders of cerium(IV) oxide of the corresponding morphological structure. It was found that the solutions of cerium(III) methanesulfonate show antiviral activity in vitro.