Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill

2022
Authors
Đorđević, Nataša
Vlahović, Milica
Martinović, Sanja

Mihajlović, Slavica

Contributors
Obradović, NinaMančić, Lidija
Conference object (Published version)

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In order to investigate the possibility of obtaining magnesium titanate, oxides of magnesium
and titanium were mechanochemically activated. Mechanical activation was performed for
1000 min in a high-energy vibro mill (engine power is 0.8 kV). The optimal amount of
powder activated in the mill is 50-100 g, so according to the stoichiometric calculation, the
composition of the starting mixture was 20.2 g (0.5 mol) MgO and 39.9 g (0.5). mol) TiO2.
X-ray diffraction analysis of samples taken from the reaction system was performed after 60,
180, 330 and 1000 min of mechanical activation. Atomic absorption spectrophotometry was
used to analyze the current chemical composition of the system, depending on the time of
activation. Based on the results of X - ray diffraction analysis, it can be concluded that the
greatest changes in the system occurred at the very beginning of mechanical activation due to
disruption of the crystal structure of the initial components. X-ray diffraction a...nalysis of the
sample after 1000 min of activation showed complete amorphization of the mixture, but no
diffraction maxima characteristic of magnesium titanate was identified. Therefore, the
mechanical activation experiments were stopped. The fact is that the invested energy was not
enough to overcome the energy barrier for the formation of a new chemical compound -
magnesium titanate. The inability to synthesize magnesium titanate is explained by the low
negative Gibbs energy value of -25.8 kJ / mol (despite the theoretical possibility that the
reaction will occur), as well as the amount of mechanical energy that entered the system
during activation that is insufficient to obtain the reaction product. Although the synthesis of
MgTiO3 has not been achieved, significant results have been obtained that identify models for
further research into the possibility of mechanochemical reactions of alkaline earth metals and
titanium dioxide.
Source:
10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“, 2022, 94-94Publisher:
- Belgrade : Serbian Ceramic Society
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - CONF AU - Đorđević, Nataša AU - Vlahović, Milica AU - Martinović, Sanja AU - Mihajlović, Slavica PY - 2022 UR - https://ritnms.itnms.ac.rs/handle/123456789/1129 AB - In order to investigate the possibility of obtaining magnesium titanate, oxides of magnesium and titanium were mechanochemically activated. Mechanical activation was performed for 1000 min in a high-energy vibro mill (engine power is 0.8 kV). The optimal amount of powder activated in the mill is 50-100 g, so according to the stoichiometric calculation, the composition of the starting mixture was 20.2 g (0.5 mol) MgO and 39.9 g (0.5). mol) TiO2. X-ray diffraction analysis of samples taken from the reaction system was performed after 60, 180, 330 and 1000 min of mechanical activation. Atomic absorption spectrophotometry was used to analyze the current chemical composition of the system, depending on the time of activation. Based on the results of X - ray diffraction analysis, it can be concluded that the greatest changes in the system occurred at the very beginning of mechanical activation due to disruption of the crystal structure of the initial components. X-ray diffraction analysis of the sample after 1000 min of activation showed complete amorphization of the mixture, but no diffraction maxima characteristic of magnesium titanate was identified. Therefore, the mechanical activation experiments were stopped. The fact is that the invested energy was not enough to overcome the energy barrier for the formation of a new chemical compound - magnesium titanate. The inability to synthesize magnesium titanate is explained by the low negative Gibbs energy value of -25.8 kJ / mol (despite the theoretical possibility that the reaction will occur), as well as the amount of mechanical energy that entered the system during activation that is insufficient to obtain the reaction product. Although the synthesis of MgTiO3 has not been achieved, significant results have been obtained that identify models for further research into the possibility of mechanochemical reactions of alkaline earth metals and titanium dioxide. PB - Belgrade : Serbian Ceramic Society C3 - 10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“ T1 - Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill EP - 94 SP - 94 ER -
@conference{ author = "Đorđević, Nataša and Vlahović, Milica and Martinović, Sanja and Mihajlović, Slavica", year = "2022", abstract = "In order to investigate the possibility of obtaining magnesium titanate, oxides of magnesium and titanium were mechanochemically activated. Mechanical activation was performed for 1000 min in a high-energy vibro mill (engine power is 0.8 kV). The optimal amount of powder activated in the mill is 50-100 g, so according to the stoichiometric calculation, the composition of the starting mixture was 20.2 g (0.5 mol) MgO and 39.9 g (0.5). mol) TiO2. X-ray diffraction analysis of samples taken from the reaction system was performed after 60, 180, 330 and 1000 min of mechanical activation. Atomic absorption spectrophotometry was used to analyze the current chemical composition of the system, depending on the time of activation. Based on the results of X - ray diffraction analysis, it can be concluded that the greatest changes in the system occurred at the very beginning of mechanical activation due to disruption of the crystal structure of the initial components. X-ray diffraction analysis of the sample after 1000 min of activation showed complete amorphization of the mixture, but no diffraction maxima characteristic of magnesium titanate was identified. Therefore, the mechanical activation experiments were stopped. The fact is that the invested energy was not enough to overcome the energy barrier for the formation of a new chemical compound - magnesium titanate. The inability to synthesize magnesium titanate is explained by the low negative Gibbs energy value of -25.8 kJ / mol (despite the theoretical possibility that the reaction will occur), as well as the amount of mechanical energy that entered the system during activation that is insufficient to obtain the reaction product. Although the synthesis of MgTiO3 has not been achieved, significant results have been obtained that identify models for further research into the possibility of mechanochemical reactions of alkaline earth metals and titanium dioxide.", publisher = "Belgrade : Serbian Ceramic Society", journal = "10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“", title = "Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill", pages = "94-94" }
Đorđević, N., Vlahović, M., Martinović, S.,& Mihajlović, S.. (2022). Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill. in 10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“ Belgrade : Serbian Ceramic Society., 94-94.
Đorđević N, Vlahović M, Martinović S, Mihajlović S. Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill. in 10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“. 2022;:94-94..
Đorđević, Nataša, Vlahović, Milica, Martinović, Sanja, Mihajlović, Slavica, "Possibility of obtaining magnesium titanate by mechanochemical process in a high-energy vibro mill" in 10th Serbian Ceramic Society Conference „Advanced Ceramics and Application“ (2022):94-94.