| Synergistic and Antagonistic Effects of Anions and Ipomoea invulcrata as Green Corrosion Inhibitor for Aluminium Dissolution in Acidic Medium | |
| I. B. Obot; N. O. Obi-Egbedi; S. A. Umoren; E. E. Ebenso | |
| 2010 | |
| Source Publication | International Journal of Electrochemical Science
 |
| ISSN | 1452-3981 |
| Volume | 5Issue:7Pages:994-1007 |
| Abstract | The extract of Ipomoea invulcrata (IP) has been studied as a possible source of green inhibitor for corrosion of aluminium in 1 M HCl at 30-60 degrees C using the conventional weight loss technique. The studies reveal that at constant acid concentration, the plant extract acts as an effective inhibitor for aluminium corrosion in acidic medium. Inhibition efficiency increases with concentration but decreases with increase in temperature and immersion time. The enhancement of inhibition efficiency of IP with the addition of KI and KSCN has also been studied. The apparent activation energy and the thermodynamic parameters governing the corrosion process have also been calculated. The adsorption of IP was in accord with the Langmuir adsorption isotherm at all the temperature studied. The mechanism of physical adsorption is proposed for the inhibitory action of IP and is satisfactorily explained by both kinetic and thermodynamic parameters. |
| description.department | [obot, i. b.; umoren, s. a.] univ uyo, dept chem, fac sci, uyo, nigeria. [obi-egbedi, n. o.] univ ibadan, dept chem, ibadan, nigeria. [umoren, s. a.] chinese acad sci, inst met res, state key lab corros & protect, shenyang, peoples r china. [ebenso, e. e.] north west univ, dept chem, za-2735 mmabatho, south africa.;obot, ib (reprint author), univ uyo, dept chem, fac sci, uyo, nigeria;proffoime@yahoo.com |
| Keyword | Ipomoea Involcrata Aluminium Corrosion Inhibition Adsorption Isotherm Thermodynamics Mild-steel Corrosion 0.1 m Hcl Hydrochloric-acid Exudate Gum Adsorption Characteristics Raphia-hookeri Sulfuric-acid Plant-extracts Halide-ions Derivatives |
| URL | 查看原文 |
| WOS ID | WOS:000280500500007 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/31393 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | I. B. Obot,N. O. Obi-Egbedi,S. A. Umoren,et al. Synergistic and Antagonistic Effects of Anions and Ipomoea invulcrata as Green Corrosion Inhibitor for Aluminium Dissolution in Acidic Medium[J]. International Journal of Electrochemical Science,2010,5(7):994-1007. |
| APA | I. B. Obot,N. O. Obi-Egbedi,S. A. Umoren,&E. E. Ebenso.(2010).Synergistic and Antagonistic Effects of Anions and Ipomoea invulcrata as Green Corrosion Inhibitor for Aluminium Dissolution in Acidic Medium.International Journal of Electrochemical Science,5(7),994-1007. |
| MLA | I. B. Obot,et al."Synergistic and Antagonistic Effects of Anions and Ipomoea invulcrata as Green Corrosion Inhibitor for Aluminium Dissolution in Acidic Medium".International Journal of Electrochemical Science 5.7(2010):994-1007. |
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