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
  • Published: 01 Sep 2012 Journal: Portugaliae Electrochimica Acta, volume 30, pages 317-328 (issn: 1647-1571, Copyright policy)
  • Publisher: Portuguese Society of Electrochemistry
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, heat of adsorption, activation energy, adsorption isotherm, Electrochemistry, Aluminium, 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
17 references, page 1 of 2

1. Zhumdahl SS. Chemistry. 3rd ed. Lexington, Toronto, Canada: DC Heath and Co; 1993.

2. Obot IB, Obi-Egbedi NO, Umoren SA. Int J Electrochem. Sci. 2009;4:863- 877.

3. Umoren SA, Obot IB, Akpabio LE, Etuk SE. Pigment Resin Technol. 2008;37(2):98-105.

4. Noor EA. Int J Electrochem Sci. 2007;2:996-1017.

5. Subha R, Saratha R. J Corr Sci Eng. 2006;10:1-8. Preprint 9.

6. El-Etre AY. J Colloid Interf Sci. 2007;31:578-583.

7. Oguzie EE. Corrosion Sci. 2007;49:1527-1539.

8. Rahim AA, Rocca E, Steinmetz J, Kassim MJ, Adnan R, Ibrahim SM. Corrosion Sci. 2007;49:402-417.

9. Oguzie EE, Onuchukwu AI, Okafor PC, Ebenso EE. Pig Resin Technol. 2006;35(2):63-70.

10. El-Etre AY, El-Tantary Z. Port Electrochim Acta. 2006;24(3):347-356.

11. Obot IB, Obi-Egbedi NO. Int J Electrochem Sci. 2009;4:1277-1288.

12. Umoren SA, Obot IB, Obi-Egbedi NO. J Material Sci. 2009;44:274-279.

13. Umoren SA, Obot IB, Ebenso EE, Obi-Egbedi NO. Port Electrochim Acta. 2008;26:199-209.

14. Raja PB, Rahim AA, Osman H, Awang K. Acta Physico-Chimica Sinica. 2010;26(8):2171-2176.

15. Nnanna LA, Onwuagba BN, Mejeha IM, Okeoma KB. Afri J Pure Appl Chem. 2010;4(2):11-16.

17 references, page 1 of 2
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;