Rifat Mohammed Dakhil, Tayser Sumer Gaaz, Ahmed A Al-Amiery, Abdul Amir H Kadhum
Abstract
Relativelyinexpensive,stableplantextract,namelyCitrusaurantiumleaves,wasemployedashighly efficientinhibitorofcarbonsteelcorrosionbycorrosiveacid.Theinhibitionefficiencywasestimated based on the weight loss method. Inhibition impacts of researched inhibitor increase with the concentration of the plant extract increase. The inhibition efficiency depends on three factors: molecular structure, concentration, and molecular weight of the inhibitor. Inhibition efficiency of 81.2% was achieved with 20% (v/v) of the extract in 1 M hydrochloric acid during 3 h at 25°C. The effect of temperature was also investigated and activation parameters were evaluated. Inhibition adsorption characteristics were approximated by Langmuir adsorption isotherm. Chemical adsorption mechanism was proposed for the studied inhibitor from the trend of inhibition performance and temperature degree in addition to activation energy values and heat of adsorption.
تيسير سمير جعاز | Tayser Sumer Gaaz | 4218