Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst
Аутори
Mudrinić, TihanaPetrović, Srđan
Krstić, Jugoslav
Milovanović, Biljana
Pavlović, Stefan
Milutinović Nikolić, Aleksandra
Banković, Predrag
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
This work describes the possible application of cyclic voltammetry (CV) for obtaining information about cobalt phases onto alumina supported cobalt catalysts.Starting from the same amount of ingredients, two catalysts with different phases of cobalt were prepared: Co3O4-A obtained by manual grinding of Co3O4 and alumina in an agate mortar and CoAl2O4-A obtained mechanochemically using a planetary ball mill.The final productswere characterized by the temperature-programmed reduction (TPR) and CV. The TPR profile of Co3O4-A showed peaks between 200–500°C characteristic of Co3O4 reduction, while the profile of CoAl2O4-A was altered in the whole temperature region and especially by the appearance of new peaks in the region of temperatures of 600–900oC.This result indicated that a certain amount ofhard-to-reduce cobalt aluminate is generated during milling. CVin alkaline solution rev...ealed that theoxidation/reduction of cobalt in CoAl2O4-Aoccurred at more negative potentials compared with cobalt in Co3O4-A.Negative shift of peak potential well correlated with the appearance of high-temperature TPR peak and could be ascribed to the cobalt phase which has lower tendency to get reduced. These findings encourage the idea of using the CV as low cost and rapid assay for distinguishing the cobalt phases onto alumina.
Кључне речи:
cyclic voltammetry / cobalt phases / cobalt catalysts / aluminaИзвор:
Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade, 2021, 85-85Издавач:
- Belgrade: Serbian Ceramic Society
Напомена:
- Belgrade, Serbia, 20-21. September 2021
Институција/група
IHTMTY - CONF AU - Mudrinić, Tihana AU - Petrović, Srđan AU - Krstić, Jugoslav AU - Milovanović, Biljana AU - Pavlović, Stefan AU - Milutinović Nikolić, Aleksandra AU - Banković, Predrag PY - 2021 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4780 AB - This work describes the possible application of cyclic voltammetry (CV) for obtaining information about cobalt phases onto alumina supported cobalt catalysts.Starting from the same amount of ingredients, two catalysts with different phases of cobalt were prepared: Co3O4-A obtained by manual grinding of Co3O4 and alumina in an agate mortar and CoAl2O4-A obtained mechanochemically using a planetary ball mill.The final productswere characterized by the temperature-programmed reduction (TPR) and CV. The TPR profile of Co3O4-A showed peaks between 200–500°C characteristic of Co3O4 reduction, while the profile of CoAl2O4-A was altered in the whole temperature region and especially by the appearance of new peaks in the region of temperatures of 600–900oC.This result indicated that a certain amount ofhard-to-reduce cobalt aluminate is generated during milling. CVin alkaline solution revealed that theoxidation/reduction of cobalt in CoAl2O4-Aoccurred at more negative potentials compared with cobalt in Co3O4-A.Negative shift of peak potential well correlated with the appearance of high-temperature TPR peak and could be ascribed to the cobalt phase which has lower tendency to get reduced. These findings encourage the idea of using the CV as low cost and rapid assay for distinguishing the cobalt phases onto alumina. PB - Belgrade: Serbian Ceramic Society C3 - Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade T1 - Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst SP - 85 EP - 85 UR - https://hdl.handle.net/21.15107/rcub_cer_4780 ER -
@conference{ author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Milutinović Nikolić, Aleksandra and Banković, Predrag", year = "2021", abstract = "This work describes the possible application of cyclic voltammetry (CV) for obtaining information about cobalt phases onto alumina supported cobalt catalysts.Starting from the same amount of ingredients, two catalysts with different phases of cobalt were prepared: Co3O4-A obtained by manual grinding of Co3O4 and alumina in an agate mortar and CoAl2O4-A obtained mechanochemically using a planetary ball mill.The final productswere characterized by the temperature-programmed reduction (TPR) and CV. The TPR profile of Co3O4-A showed peaks between 200–500°C characteristic of Co3O4 reduction, while the profile of CoAl2O4-A was altered in the whole temperature region and especially by the appearance of new peaks in the region of temperatures of 600–900oC.This result indicated that a certain amount ofhard-to-reduce cobalt aluminate is generated during milling. CVin alkaline solution revealed that theoxidation/reduction of cobalt in CoAl2O4-Aoccurred at more negative potentials compared with cobalt in Co3O4-A.Negative shift of peak potential well correlated with the appearance of high-temperature TPR peak and could be ascribed to the cobalt phase which has lower tendency to get reduced. These findings encourage the idea of using the CV as low cost and rapid assay for distinguishing the cobalt phases onto alumina.", publisher = "Belgrade: Serbian Ceramic Society", journal = "Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade", title = "Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst", pages = "85-85", url = "https://hdl.handle.net/21.15107/rcub_cer_4780" }
Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Milutinović Nikolić, A.,& Banković, P.. (2021). Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst. in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade Belgrade: Serbian Ceramic Society., 85-85. https://hdl.handle.net/21.15107/rcub_cer_4780
Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Milutinović Nikolić A, Banković P. Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst. in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade. 2021;:85-85. https://hdl.handle.net/21.15107/rcub_cer_4780 .
Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Milutinović Nikolić, Aleksandra, Banković, Predrag, "Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst" in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade (2021):85-85, https://hdl.handle.net/21.15107/rcub_cer_4780 .