Veljković, Ivana

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99bd0391-02e0-498f-a2ca-a709db01c463
  • Veljković, Ivana (4)
Projects

Author's Bibliography

Solid state synthesis of extra phase-pure Li4Ti5O12 spinel

Veljković, Ivana; Poleti, Dejan; Karanović, Ljiljana; Zdujić, Miodrag; Branković, Goran

(Belgrade : International Institute for the Science of Sintering, 2011)

TY  - JOUR
AU  - Veljković, Ivana
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Branković, Goran
PY  - 2011
AB  - Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800°C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250ºC, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600°C and its transformation to Li4Ti5O12 between 600-800ºC. The spinel structure is stable up to 1000ºC when it is decomposed due to Li2O evaporation.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Solid state synthesis of extra phase-pure Li4Ti5O12 spinel
SP  - 343
EP  - 351
VL  - 43
IS  - 3
DO  - 10.2298/SOS1103343V
ER  - 
@article{
author = "Veljković, Ivana and Poleti, Dejan and Karanović, Ljiljana and Zdujić, Miodrag and Branković, Goran",
year = "2011",
abstract = "Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800°C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250ºC, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600°C and its transformation to Li4Ti5O12 between 600-800ºC. The spinel structure is stable up to 1000ºC when it is decomposed due to Li2O evaporation.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Solid state synthesis of extra phase-pure Li4Ti5O12 spinel",
pages = "343-351",
volume = "43",
number = "3",
doi = "10.2298/SOS1103343V"
}
Veljković, I., Poleti, D., Karanović, L., Zdujić, M.,& Branković, G. (2011). Solid state synthesis of extra phase-pure Li4Ti5O12 spinel.
Science of Sintering
Belgrade : International Institute for the Science of Sintering., 43(3), 343-351.
https://doi.org/10.2298/SOS1103343V
Veljković I, Poleti D, Karanović L, Zdujić M, Branković G. Solid state synthesis of extra phase-pure Li4Ti5O12 spinel. Science of Sintering. 2011;43(3):343-351.
doi:10.2298/SOS1103343V.
Veljković Ivana, Poleti Dejan, Karanović Ljiljana, Zdujić Miodrag, Branković Goran, "Solid state synthesis of extra phase-pure Li4Ti5O12 spinel" Science of Sintering, 43, no. 3 (2011):343-351,
https://doi.org/10.2298/SOS1103343V .
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Mechanochemistry of titanium oxides

Veljković, Ivana; Poleti, Dejan; Zdujić, Miodrag; Karanović, Ljiljana

(Belgrade : Association of the Chemical Engineers of Serbia, 2009)

TY  - JOUR
AU  - Veljković, Ivana
AU  - Poleti, Dejan
AU  - Zdujić, Miodrag
AU  - Karanović, Ljiljana
PY  - 2009
AB  - Mechanochemistry represents an alternative route in synthesis of nanomaterials. Mechanochemical routes are attractive because of their simplicity, flexibility, and ability to prepare materials by solid state reactions at room temperature. The aim of this work is the mechanochemical synthesis of nanostructured titanium oxides of different composition starting from mixtures of Ti and TiO2, TiO and TiO2 or Ti 2O3 and TiO2. Emphasis is on the Magneli phases Ti4O7 and Ti5O9 because their mixture is commercially known as EBONEX material. The materials prepared were characterized by XRPD, TG/DTA analysis, SEM and optical microscopy. Titanium monoxide and several Magneli oxides, Ti4O7, Ti 5O9 and Ti6O11, are successsfully prepared. The results are very interesting because the EBONEX materials were prepared at lower than usual temperature, which would decrease the effective cost of production.
PB  - Belgrade : Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Mechanochemistry of titanium oxides
SP  - 247
EP  - 251
VL  - 63
IS  - 3
DO  - 10.2298/HEMIND0903247V
ER  - 
@article{
author = "Veljković, Ivana and Poleti, Dejan and Zdujić, Miodrag and Karanović, Ljiljana",
year = "2009",
abstract = "Mechanochemistry represents an alternative route in synthesis of nanomaterials. Mechanochemical routes are attractive because of their simplicity, flexibility, and ability to prepare materials by solid state reactions at room temperature. The aim of this work is the mechanochemical synthesis of nanostructured titanium oxides of different composition starting from mixtures of Ti and TiO2, TiO and TiO2 or Ti 2O3 and TiO2. Emphasis is on the Magneli phases Ti4O7 and Ti5O9 because their mixture is commercially known as EBONEX material. The materials prepared were characterized by XRPD, TG/DTA analysis, SEM and optical microscopy. Titanium monoxide and several Magneli oxides, Ti4O7, Ti 5O9 and Ti6O11, are successsfully prepared. The results are very interesting because the EBONEX materials were prepared at lower than usual temperature, which would decrease the effective cost of production.",
publisher = "Belgrade : Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Mechanochemistry of titanium oxides",
pages = "247-251",
volume = "63",
number = "3",
doi = "10.2298/HEMIND0903247V"
}
Veljković, I., Poleti, D., Zdujić, M.,& Karanović, L. (2009). Mechanochemistry of titanium oxides.
Hemijska industrija
Belgrade : Association of the Chemical Engineers of Serbia., 63(3), 247-251.
https://doi.org/10.2298/HEMIND0903247V
Veljković I, Poleti D, Zdujić M, Karanović L. Mechanochemistry of titanium oxides. Hemijska industrija. 2009;63(3):247-251.
doi:10.2298/HEMIND0903247V.
Veljković Ivana, Poleti Dejan, Zdujić Miodrag, Karanović Ljiljana, "Mechanochemistry of titanium oxides" Hemijska industrija, 63, no. 3 (2009):247-251,
https://doi.org/10.2298/HEMIND0903247V .
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Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound

Zdujić, Miodrag; Jovalekić, Čedomir; Poleti, Dejan; Veljković, Ivana; Karanović, Ljiljana

(Elsevier, 2009)

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Jovalekić, Čedomir
AU  - Poleti, Dejan
AU  - Veljković, Ivana
AU  - Karanović, Ljiljana
PY  - 2009
AB  - Concurrent milling of Bi4Ti3O12 was carried out in a planetary ball mill with hardened-steel 13 or 6 mm diameter balls with a goal to investigate how the system responds to the constrains imposed by milling. Milling intensity for various milling parameters was derived from the electrical power measurement. The reverse amorphous ↔ crystalline phase transition induced by milling is governed by impact energy and frequency. Below a certain threshold value of impact energy crystallization does not occur, whereas a higher impact frequency accelerates amorphization. Mechanochemical reactions are predominantly discrete processes, which occur at the moment of impact. © 2009 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Materials Letters
T1  - Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound
SP  - 2542
EP  - 2544
VL  - 63
IS  - 29
DO  - 10.1016/j.matlet.2009.08.055
ER  - 
@article{
author = "Zdujić, Miodrag and Jovalekić, Čedomir and Poleti, Dejan and Veljković, Ivana and Karanović, Ljiljana",
year = "2009",
abstract = "Concurrent milling of Bi4Ti3O12 was carried out in a planetary ball mill with hardened-steel 13 or 6 mm diameter balls with a goal to investigate how the system responds to the constrains imposed by milling. Milling intensity for various milling parameters was derived from the electrical power measurement. The reverse amorphous ↔ crystalline phase transition induced by milling is governed by impact energy and frequency. Below a certain threshold value of impact energy crystallization does not occur, whereas a higher impact frequency accelerates amorphization. Mechanochemical reactions are predominantly discrete processes, which occur at the moment of impact. © 2009 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound",
pages = "2542-2544",
volume = "63",
number = "29",
doi = "10.1016/j.matlet.2009.08.055"
}
Zdujić, M., Jovalekić, Č., Poleti, D., Veljković, I.,& Karanović, L. (2009). Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound.
Materials Letters
Elsevier., 63(29), 2542-2544.
https://doi.org/10.1016/j.matlet.2009.08.055
Zdujić M, Jovalekić Č, Poleti D, Veljković I, Karanović L. Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound. Materials Letters. 2009;63(29):2542-2544.
doi:10.1016/j.matlet.2009.08.055.
Zdujić Miodrag, Jovalekić Čedomir, Poleti Dejan, Veljković Ivana, Karanović Ljiljana, "Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound" Materials Letters, 63, no. 29 (2009):2542-2544,
https://doi.org/10.1016/j.matlet.2009.08.055 .
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Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12

Zdujić, Miodrag; Jovalekić, Čedomir; Veljković, Ivana; Poleti, Dejan; Karanović, Ljiljana

(2008)

TY  - CONF
AU  - Zdujić, Miodrag
AU  - Jovalekić, Čedomir
AU  - Veljković, Ivana
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
PY  - 2008
AB  - Poster presented at the XLVI Savetovanje srpskog hemijskog društva, Beograd, 29. mart (21. februar) 2008
T1  - Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12
ER  - 
@conference{
author = "Zdujić, Miodrag and Jovalekić, Čedomir and Veljković, Ivana and Poleti, Dejan and Karanović, Ljiljana",
year = "2008",
abstract = "Poster presented at the XLVI Savetovanje srpskog hemijskog društva, Beograd, 29. mart (21. februar) 2008",
title = "Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12"
}
Zdujić, M., Jovalekić, Č., Veljković, I., Poleti, D.,& Karanović, L. (2008). Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12.
.
Zdujić M, Jovalekić Č, Veljković I, Poleti D, Karanović L. Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12. 2008;.
Zdujić Miodrag, Jovalekić Čedomir, Veljković Ivana, Poleti Dejan, Karanović Ljiljana, "Uticaj parametara mlevenja na odnos amorfne i kristalne faze u jedinjenju Bi4Ti3O12" (2008)