caa a22 4500 463190548 CHVBK 20180406164907.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10973-007-7748-x doi (NATIONALLICENCE)springer-10.1007/s10973-007-7748-x Structural and thermal studies on the solid products in the system MnSeO3-SeO2-H2O [Elektronische Daten] [L. Vlaev, Mariana Tavlieva] The solubility of MnSeO3-SeO2-H2O system was studied in the temperature region 25-300°C. The compounds of the three-component system were identified by the Schreinemaker's method. The phase diagram of manganese(II) selenites was drawn and the crystallization fields for the different phases were determined. Depending on the conditions for hydrothermal synthesis, MnSeO3·H2O, MnSeO3·3/4H2O, MnSeO3·l/3H2O and MnSe2O5 were obtained. The different phases were proven and characterized by chemical, powder X-ray diffraction and thermal analyses, as well as IR spectroscopy. The kinetics of dehydration and decomposition of MnSeO3·H2O was studied under non-isothermal heating. Based on 4 calculation procedures and 27 kinetic equations, the values of activation energy and pre-exponential factor in Arrhenius equation were calculated for both processes. Springer Science+Business Media LLC, 2007 hydrothermal synthesis nationallicence IR spectroscopy nationallicence manganese(II) selenites nationallicence non-isothermal kinetic nationallicence powder X-ray diffraction nationallicence solubility diagrams nationallicence thermal analyses nationallicence Vlaev L. Department of Physical Chemistry, Assen Zlatarov University, 8010, Bourgas, Bulgaria aut Tavlieva Mariana Department of Physical Chemistry, Assen Zlatarov University, 8010, Bourgas, Bulgaria aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 385-392 1388-6150 90:2<385 2007 90 10973 https://doi.org/10.1007/s10973-007-7748-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-007-7748-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vlaev L. Department of Physical Chemistry, Assen Zlatarov University, 8010, Bourgas, Bulgaria aut NATIONALLICENCE 700 1- Tavlieva Mariana Department of Physical Chemistry, Assen Zlatarov University, 8010, Bourgas, Bulgaria aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/2(2007-11-01), 385-392 1388-6150 90:2<385 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer