Oxygen reduction on iron-Part VI. Processes in alkaline solutions
Само за регистроване кориснике
1994
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The kinetics of oxygen reduction were studied on passivated iron in borate buffered and unbuffered solutions of pH ranging from 7.4 to 13.8. A rotating disk electrode was employed. The O2 reduction on iron under these conditions was found to occur on the oxidized surfaces. The reaction orders with respect to O2 and OH- are 1 and -1, respectively, in solutions of pH > 11 and 1 and 0 in solutions of pH < 11. The OH- reaction order was explained as being due to the acid-base properties of the passive film. The Tafel slope value is about -85mV. In solutions of pH < 11 there are two Tafel regions, whereas at higher pH values Tafelian behavior is observed only in the high current density region. Two reaction mechanisms are proposed having the same rate determining step which is the adsorption of O2 molecules on Fe(II)ox surface sites which act as the active centers.
Кључне речи:
iron / oxygen / passivity / reductionИзвор:
Electrochimica Acta, 1994, 39, 7, 975-982Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/0013-4686(94)85115-8
ISSN: 0013-4686
PubMed:
Scopus: 2-s2.0-0028422739
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Gojković, Snežana Lj. AU - Zečević, S.K. AU - Dražić, Dragutin M. PY - 1994 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/54 AB - The kinetics of oxygen reduction were studied on passivated iron in borate buffered and unbuffered solutions of pH ranging from 7.4 to 13.8. A rotating disk electrode was employed. The O2 reduction on iron under these conditions was found to occur on the oxidized surfaces. The reaction orders with respect to O2 and OH- are 1 and -1, respectively, in solutions of pH > 11 and 1 and 0 in solutions of pH < 11. The OH- reaction order was explained as being due to the acid-base properties of the passive film. The Tafel slope value is about -85mV. In solutions of pH < 11 there are two Tafel regions, whereas at higher pH values Tafelian behavior is observed only in the high current density region. Two reaction mechanisms are proposed having the same rate determining step which is the adsorption of O2 molecules on Fe(II)ox surface sites which act as the active centers. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Electrochimica Acta T1 - Oxygen reduction on iron-Part VI. Processes in alkaline solutions EP - 982 IS - 7 SP - 975 VL - 39 DO - 10.1016/0013-4686(94)85115-8 ER -
@article{ author = "Gojković, Snežana Lj. and Zečević, S.K. and Dražić, Dragutin M.", year = "1994", abstract = "The kinetics of oxygen reduction were studied on passivated iron in borate buffered and unbuffered solutions of pH ranging from 7.4 to 13.8. A rotating disk electrode was employed. The O2 reduction on iron under these conditions was found to occur on the oxidized surfaces. The reaction orders with respect to O2 and OH- are 1 and -1, respectively, in solutions of pH > 11 and 1 and 0 in solutions of pH < 11. The OH- reaction order was explained as being due to the acid-base properties of the passive film. The Tafel slope value is about -85mV. In solutions of pH < 11 there are two Tafel regions, whereas at higher pH values Tafelian behavior is observed only in the high current density region. Two reaction mechanisms are proposed having the same rate determining step which is the adsorption of O2 molecules on Fe(II)ox surface sites which act as the active centers.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Electrochimica Acta", title = "Oxygen reduction on iron-Part VI. Processes in alkaline solutions", pages = "982-975", number = "7", volume = "39", doi = "10.1016/0013-4686(94)85115-8" }
Gojković, S. Lj., Zečević, S.K.,& Dražić, D. M.. (1994). Oxygen reduction on iron-Part VI. Processes in alkaline solutions. in Electrochimica Acta Pergamon-Elsevier Science Ltd, Oxford., 39(7), 975-982. https://doi.org/10.1016/0013-4686(94)85115-8
Gojković SL, Zečević S, Dražić DM. Oxygen reduction on iron-Part VI. Processes in alkaline solutions. in Electrochimica Acta. 1994;39(7):975-982. doi:10.1016/0013-4686(94)85115-8 .
Gojković, Snežana Lj., Zečević, S.K., Dražić, Dragutin M., "Oxygen reduction on iron-Part VI. Processes in alkaline solutions" in Electrochimica Acta, 39, no. 7 (1994):975-982, https://doi.org/10.1016/0013-4686(94)85115-8 . .