TY  - JOUR
AU  - Cvetković, Vesna S.
AU  - Feldhaus, Dominic
AU  - Vukićević, Nataša
AU  - Milićević-Neumann, Ksenija
AU  - Barudžija, Tanja S.
AU  - Friedrich, Bernd
AU  - Jovićević, Jovan
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5372
AB  - The impact of rare earth oxide (REO) concentration on the deposition process and selective recovery of the metal being deposited from a molten fluoride salt system was investigated by applying deposition of Nd and Pr and varying the concentration of REO added to the electrolyte. A ternary phase diagram for the liquidus temperature of the NdF3-PrF3-LiF system was constructed to better predict the optimal electrolyte constitution. Cyclic voltammetry was used to record three redox signals, reflecting the processes involving Nd(III)/Nd and Pr(III)/Pr transformations. A two-step red/ox process for Nd(III) ions and a single-step red/ox process for Pr(III) ions were confirmed by square-wave voltammetry. The cyclic voltammetry results indicated the possibility of neodymium and praseodymium co-deposition. In order to sustain higher co-deposition rates on the cathode and to avoid increased production of PFC greenhouse gases on the anode, a low-overpotential deposition technique was used for Nd and Pr electrodeposition from the electrolyte with varying Nd2O3 and Pr6O11 concentrations. Co-deposited neodymium and praseodymium metals were characterized by electron probe microanalysis (EPMA) and X-ray diffraction (XRD) analysis. After electrodeposition, concentration profiles of neodymium and praseodymium were recorded, starting from the cathode surface towards the electrolyte bulk. The working temperature of 1050 °C of the molten fluoride salt basic electrolyte, in line with the constructed phase diagram, was validated by improved co-deposition and led to a more effective deposition process.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Metals
T1  - Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts
VL  - 12
IS  - 7
SP  - 1204
DO  - 10.3390/met12071204
ER  - 

@article{
author = "Cvetković, Vesna S. and Feldhaus, Dominic and Vukićević, Nataša and Milićević-Neumann, Ksenija and Barudžija, Tanja S. and Friedrich, Bernd and Jovićević, Jovan",
year = "2022",
abstract = "The impact of rare earth oxide (REO) concentration on the deposition process and selective recovery of the metal being deposited from a molten fluoride salt system was investigated by applying deposition of Nd and Pr and varying the concentration of REO added to the electrolyte. A ternary phase diagram for the liquidus temperature of the NdF3-PrF3-LiF system was constructed to better predict the optimal electrolyte constitution. Cyclic voltammetry was used to record three redox signals, reflecting the processes involving Nd(III)/Nd and Pr(III)/Pr transformations. A two-step red/ox process for Nd(III) ions and a single-step red/ox process for Pr(III) ions were confirmed by square-wave voltammetry. The cyclic voltammetry results indicated the possibility of neodymium and praseodymium co-deposition. In order to sustain higher co-deposition rates on the cathode and to avoid increased production of PFC greenhouse gases on the anode, a low-overpotential deposition technique was used for Nd and Pr electrodeposition from the electrolyte with varying Nd2O3 and Pr6O11 concentrations. Co-deposited neodymium and praseodymium metals were characterized by electron probe microanalysis (EPMA) and X-ray diffraction (XRD) analysis. After electrodeposition, concentration profiles of neodymium and praseodymium were recorded, starting from the cathode surface towards the electrolyte bulk. The working temperature of 1050 °C of the molten fluoride salt basic electrolyte, in line with the constructed phase diagram, was validated by improved co-deposition and led to a more effective deposition process.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts",
volume = "12",
number = "7",
pages = "1204",
doi = "10.3390/met12071204"
}

Cvetković, V. S., Feldhaus, D., Vukićević, N., Milićević-Neumann, K., Barudžija, T. S., Friedrich, B.,& Jovićević, J.. (2022). Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts. in Metals
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 12(7), 1204.
https://doi.org/10.3390/met12071204

Cvetković VS, Feldhaus D, Vukićević N, Milićević-Neumann K, Barudžija TS, Friedrich B, Jovićević J. Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts. in Metals. 2022;12(7):1204.
doi:10.3390/met12071204 .

Cvetković, Vesna S., Feldhaus, Dominic, Vukićević, Nataša, Milićević-Neumann, Ksenija, Barudžija, Tanja S., Friedrich, Bernd, Jovićević, Jovan, "Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts" in Metals, 12, no. 7 (2022):1204,
https://doi.org/10.3390/met12071204 . .

TY  - JOUR
AU  - Kaluđerović, Branka
AU  - Jovanović, Vladislava M.
AU  - Stevanović, Sanja
AU  - Bogdanov, Zarko D.
AU  - Sanja Krstić
AU  - Dodevski, Vladimir
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4221
AB  - Carbon materials with developed porosity are usually used as supports for platinum catalysts. Physico-chemical characteristics of the support influence the properties of platinum deposited and its catalytic activity. In our studies, we deposited platinum on carbon fibrous like materials obtained from platanus seeds-achenes. The precursor was chemically activated with different reagents: NaOH, pyrogallol, and H2O2, before the carbonization process. Platinum was deposited on all substrates to study the influence of the substrate properties on the activity of the catalyst. Carbon materials were characterized by nitrogen adsorption/desorption isotherms measurements, X-ray diffraction, and scanning electron microscopy. It was noticed that the adsorption characteristics of carbon support affected the structure of platinum deposits and thus their activity.
PB  - Serbia : Association of Metallurgical Engineers of Serbia
T2  - Metallurgical and Materials Engineering
T1  - Characterization of carbon fibrous material from platanus achenes as platinum catalysts support
VL  - 26
IS  - 4
SP  - 375
EP  - 383
DO  - 10.30544/588
ER  - 

@article{
author = "Kaluđerović, Branka and Jovanović, Vladislava M. and Stevanović, Sanja and Bogdanov, Zarko D. and Sanja Krstić and Dodevski, Vladimir",
year = "2020",
abstract = "Carbon materials with developed porosity are usually used as supports for platinum catalysts. Physico-chemical characteristics of the support influence the properties of platinum deposited and its catalytic activity. In our studies, we deposited platinum on carbon fibrous like materials obtained from platanus seeds-achenes. The precursor was chemically activated with different reagents: NaOH, pyrogallol, and H2O2, before the carbonization process. Platinum was deposited on all substrates to study the influence of the substrate properties on the activity of the catalyst. Carbon materials were characterized by nitrogen adsorption/desorption isotherms measurements, X-ray diffraction, and scanning electron microscopy. It was noticed that the adsorption characteristics of carbon support affected the structure of platinum deposits and thus their activity.",
publisher = "Serbia : Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical and Materials Engineering",
title = "Characterization of carbon fibrous material from platanus achenes as platinum catalysts support",
volume = "26",
number = "4",
pages = "375-383",
doi = "10.30544/588"
}

Kaluđerović, B., Jovanović, V. M., Stevanović, S., Bogdanov, Z. D., Sanja Krstić,& Dodevski, V.. (2020). Characterization of carbon fibrous material from platanus achenes as platinum catalysts support. in Metallurgical and Materials Engineering
Serbia : Association of Metallurgical Engineers of Serbia., 26(4), 375-383.
https://doi.org/10.30544/588

Kaluđerović B, Jovanović VM, Stevanović S, Bogdanov ZD, Sanja Krstić, Dodevski V. Characterization of carbon fibrous material from platanus achenes as platinum catalysts support. in Metallurgical and Materials Engineering. 2020;26(4):375-383.
doi:10.30544/588 .

Kaluđerović, Branka, Jovanović, Vladislava M., Stevanović, Sanja, Bogdanov, Zarko D., Sanja Krstić, Dodevski, Vladimir, "Characterization of carbon fibrous material from platanus achenes as platinum catalysts support" in Metallurgical and Materials Engineering, 26, no. 4 (2020):375-383,
https://doi.org/10.30544/588 . .