Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Inhibition of aluminium alloy corrosion in chloride solution by caffeine isolated from black tea (CROSBI ID 697301)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Gudić, Senka ; Zlatunić, Marija ; Vrsalović, Ladislav ; Radonić, Ani Inhibition of aluminium alloy corrosion in chloride solution by caffeine isolated from black tea // Knjiga sažetaka s 11. međunarodnog znanstveno-stručnog skupa Hranom do zdravlja. 2018. str. 78-78

Podaci o odgovornosti

Gudić, Senka ; Zlatunić, Marija ; Vrsalović, Ladislav ; Radonić, Ani

engleski

Inhibition of aluminium alloy corrosion in chloride solution by caffeine isolated from black tea

Caffeine (1, 3, 7-trimethylxanthine) was isolated from black tea and characterised using different physical methods. The corrosion inhibition performance of the caffeine isolate (in concentration from 1x10 -5 to 1x10 -3 mol dm -3 ) on aluminium alloy corrosion in neutral 0.5 mol dm -3 NaCl solution was investigated using potentiodynamic and linear polarization measurements at 20 °C. Corrosion potential, corrosion current and polarization resistance were determined and surface coverage of inhibitor molecules and inhibition efficacy were calculated. The obtained results show that caffeine effectively inhibited the corrosion reaction in the chloride solution with an inhibition efficiency of up to cca 76%. Furthermore, caffeine was found to function essentially as a mixed type with a higher influence on cathodic reaction. The adsorption behaviour of investigated inhibitor can be described by the Frundlich adsorption isotherm. The adsorption free energy closes to – 10 kJ mol -1 indicates physical adsorption of the caffeine on the aluminium alloy surface in NaCl solution.

aluminium alloy, corrosion, inhibition, caffeine

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

78-78.

2018.

objavljeno

Podaci o matičnoj publikaciji

Knjiga sažetaka s 11. međunarodnog znanstveno-stručnog skupa Hranom do zdravlja

Podaci o skupu

11th International Scientific and Professional Conference „With food to health“ = 11. međunarodni znanstveno-stručni skup Hranom do zdravlja

poster

18.10.2018-19.10.2018

Split, Hrvatska

Povezanost rada

Kemija, Kemijsko inženjerstvo