Chemical and electrochemical dissolution of chromium at room and elevated temperatures
Hemijsko i elektrohemijsko rastvaranje hroma na sobnoj i na povišenim temperaturama
Apstrakt
The influence of temperature on electrochemical and chemical dissolution of chromium was studied in the acidic sulphuric solutions. The hydrogen evolution reaction, as well as the anodic dissolution and chemical dissolution of chromium from activated surfaces in sulphuric acid solutions pH 1 follow the Arrhenius law, with the apparent activation energies of 35 kJ mol-1, 58 kJ mol-1 and 62 kJ mol-1, respectively. The higher activation energy of the chemical dissolution of chromium leads to the signifycantly noticeable chemical corrosion on elevated temperatures in comparison with the electrochemical corrosion.
Ispitivan je uticaj temperature na elektrohemijsko i hemijsko rastvaranje hroma u kiselim rastvorima sulfata. Reakcije izdvajanja vodonika, anodnog rastvaranja i hemijskog rastvaranja hroma sa aktivirane površine hroma u rastvoru sumporne kiseline pH 1 slede Arenijusovu zavisnost sa prividnom energijom aktivacije 35 kJ mol-1, 58 kJ mol-1 i 62 kJ mol-1, respektivno. Velika energija aktivacije hemijskog rastvaranja hroma dovodi na povišenim temperaturama do znatno izraženije hemijske korozije u odnosu na elektrohemijsku koroziju.
Ključne reči:
chromium chemical corrosion / electrochemical dissolution / activation energy / hemijska korozija hroma / elektrohemijsko rastvaranje / prividna energija aktivacijeIzvor:
Mining and Metallurgy Engineering Bor, 2015, 2, 149-160Izdavač:
- Institut za rudarstvo i metalurgiju Bor
Finansiranje / projekti:
- Istraživanje i optimizacija tehnoloških i funkcionalnih performansi ventilacionog mlina termoelektrane Kostolac B (RS-MESTD-Technological Development (TD or TR)-34028)
Institucija/grupa
IHTMTY - JOUR AU - Jegdić, Bore AU - Stevanović, Maja AU - Jegdić, Aleksandar PY - 2015 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1771 AB - The influence of temperature on electrochemical and chemical dissolution of chromium was studied in the acidic sulphuric solutions. The hydrogen evolution reaction, as well as the anodic dissolution and chemical dissolution of chromium from activated surfaces in sulphuric acid solutions pH 1 follow the Arrhenius law, with the apparent activation energies of 35 kJ mol-1, 58 kJ mol-1 and 62 kJ mol-1, respectively. The higher activation energy of the chemical dissolution of chromium leads to the signifycantly noticeable chemical corrosion on elevated temperatures in comparison with the electrochemical corrosion. AB - Ispitivan je uticaj temperature na elektrohemijsko i hemijsko rastvaranje hroma u kiselim rastvorima sulfata. Reakcije izdvajanja vodonika, anodnog rastvaranja i hemijskog rastvaranja hroma sa aktivirane površine hroma u rastvoru sumporne kiseline pH 1 slede Arenijusovu zavisnost sa prividnom energijom aktivacije 35 kJ mol-1, 58 kJ mol-1 i 62 kJ mol-1, respektivno. Velika energija aktivacije hemijskog rastvaranja hroma dovodi na povišenim temperaturama do znatno izraženije hemijske korozije u odnosu na elektrohemijsku koroziju. PB - Institut za rudarstvo i metalurgiju Bor T2 - Mining and Metallurgy Engineering Bor T1 - Chemical and electrochemical dissolution of chromium at room and elevated temperatures T1 - Hemijsko i elektrohemijsko rastvaranje hroma na sobnoj i na povišenim temperaturama IS - 2 SP - 149 EP - 160 DO - 10.5937/MMEB1502149J ER -
@article{ author = "Jegdić, Bore and Stevanović, Maja and Jegdić, Aleksandar", year = "2015", abstract = "The influence of temperature on electrochemical and chemical dissolution of chromium was studied in the acidic sulphuric solutions. The hydrogen evolution reaction, as well as the anodic dissolution and chemical dissolution of chromium from activated surfaces in sulphuric acid solutions pH 1 follow the Arrhenius law, with the apparent activation energies of 35 kJ mol-1, 58 kJ mol-1 and 62 kJ mol-1, respectively. The higher activation energy of the chemical dissolution of chromium leads to the signifycantly noticeable chemical corrosion on elevated temperatures in comparison with the electrochemical corrosion., Ispitivan je uticaj temperature na elektrohemijsko i hemijsko rastvaranje hroma u kiselim rastvorima sulfata. Reakcije izdvajanja vodonika, anodnog rastvaranja i hemijskog rastvaranja hroma sa aktivirane površine hroma u rastvoru sumporne kiseline pH 1 slede Arenijusovu zavisnost sa prividnom energijom aktivacije 35 kJ mol-1, 58 kJ mol-1 i 62 kJ mol-1, respektivno. Velika energija aktivacije hemijskog rastvaranja hroma dovodi na povišenim temperaturama do znatno izraženije hemijske korozije u odnosu na elektrohemijsku koroziju.", publisher = "Institut za rudarstvo i metalurgiju Bor", journal = "Mining and Metallurgy Engineering Bor", title = "Chemical and electrochemical dissolution of chromium at room and elevated temperatures, Hemijsko i elektrohemijsko rastvaranje hroma na sobnoj i na povišenim temperaturama", number = "2", pages = "149-160", doi = "10.5937/MMEB1502149J" }
Jegdić, B., Stevanović, M.,& Jegdić, A.. (2015). Chemical and electrochemical dissolution of chromium at room and elevated temperatures. in Mining and Metallurgy Engineering Bor Institut za rudarstvo i metalurgiju Bor.(2), 149-160. https://doi.org/10.5937/MMEB1502149J
Jegdić B, Stevanović M, Jegdić A. Chemical and electrochemical dissolution of chromium at room and elevated temperatures. in Mining and Metallurgy Engineering Bor. 2015;(2):149-160. doi:10.5937/MMEB1502149J .
Jegdić, Bore, Stevanović, Maja, Jegdić, Aleksandar, "Chemical and electrochemical dissolution of chromium at room and elevated temperatures" in Mining and Metallurgy Engineering Bor, no. 2 (2015):149-160, https://doi.org/10.5937/MMEB1502149J . .