TRANSFORMATIONS OF MECHANOCHEMICAL ACTIVATED Na2CO3

Nataša Đorđević; Slavica Mihajlović; Katarina Pantović Spajić; Jasmina Lozanović Šajić; Mirko Grubišić

doi:10.5937/podrad2241015Q

Nataša Đorđević Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d`Esperey 86, 11000 Belgrade, Serbia
Slavica Mihajlović Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d`Esperey 86, 11000 Belgrade, Serbia
Katarina Pantović Spajić Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d`Esperey 86, 11000 Belgrade, Serbia
Jasmina Lozanović Šajić Institute of Health Care Engineering with European Testing Center of Medical Devices TU Graz, Stremayrgasse 16, Graz, Austria
Mirko Grubišić Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d`Esperey 86, 11000 Belgrade, Serbia

DOI: https://doi.org/10.5937/podrad2241015Q

Keywords: Mechanical activation, sodium carbonate, mechanochemical transformation

Abstract

During mechanical activation, the energy of treated material is increased to a higher level. This can lead to the chemical transformation of the activated material. This is the point where we can talk about mechanochemical transformations that have occurred as a result of mechanical activation. The subject of this paper is to monitor mass changes of material after different degrees of activation. One of the substances which are often used in the processes of mechanochemical synthesis is sodium carbonate. The mass changes occurring during the treatment were detected and measured by various methods, depending on the processing environment. The mass increase was attributed to the chemisorption of moisture and carbon dioxide present in the air, as a consequence of the sodium carbonate activation. The methods we used were calcimetric chemical analysis. According to obtained results, it was found that activated sodium carbonate is mass-transformed into sodium bicarbonate, whereby these changes are functionally dependent on activation time and the processing atmosphere.

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