publication . Article . Other literature type . 2012

Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium

Ejikeme, P M; Umana, S G; Onukwuli, O D;
Open Access English
  • Published: 01 Sep 2012
  • Publisher: Sociedade Portuguesa de Electroquímica
Abstract
The inhibitive effect of Treculia Africana leaves extract (TALE) in the corrosion of aluminium in HCl solution was studied using weight loss and thermometric methods at 30 - 60 oC. The results showed that TALE acted as a corrosion inhibitor of aluminium in HCl. Inhibition efficiency increased with increase in TALE concentration, but decreased with increase in temperature. TALE interaction with the metal surface was found to obey Freundlich and El-Awady adsorption isotherms. The obtained heats of adsorption values were negative. A phenomenon of physical adsorption is proposed for the adsorption behavior of TALE.
Subjects
free text keywords: weight loss, aluminium, heat of adsorption, activation energy, adsorption isotherm, Electrochemistry, chemistry.chemical_element, chemistry, Adsorption, Corrosion inhibitor, chemistry.chemical_compound, Corrosion, Freundlich equation, Inorganic chemistry, Metal, visual_art.visual_art_medium, visual_art, Treculia africana, biology.organism_classification, biology
Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue
publication . Article . Other literature type . 2012

Corrosion Inhibition of Aluminium by Treculia Africana Leaves Extract in Acid Medium

Ejikeme, P M; Umana, S G; Onukwuli, O D;