Corrosion inhibition by leaves and stem extracts of Sida acuta for mild steel in 1 M H2SO4 solutions investigated by chemical and spectroscopic techniques

被引：130
作者：
Umoren, S. A. [1 ]
Eduok, U. M. [1 ]
Solomon, M. M. [1 ]
Udoh, A. P. [1 ]
机构：
[1] Univ Uyo, Fac Sci, Dept Chem, PMB 1017, Uyo, Nigeria
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2016年 / 9卷
关键词：
Corrosion inhibition; Mild steel; Acid; Sida acuta; COLD-ROLLED STEEL; HYDROCHLORIC-ACID; ETHANOL EXTRACT; AQUEOUS EXTRACT; ADSORPTION PROPERTIES; PLANT-EXTRACTS; CARBON-STEEL; ALUMINUM; MEDIA; FENUGREEK;
D O I：
10.1016/j.arabjc.2011.03.008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Corrosion inhibition of mild steel in 1 MH2SO4 by leaves and stem extracts of Sida acuta was studied using chemical (weight loss and hydrogen evolution) and spectroscopic (AAS, FTIR and UV-V) techniques at 30-60 degrees C. It was found that the leaves and stem extracts of S. acuta inhibited the acid induced corrosion of mild steel. The inhibition efficiency increases with increase in concentration of the extracts but decrease with rise in temperature. Inhibitive effect was afforded by adsorption of the extracts' components which was approximated by Freundlich adsorption isotherm. Inhibition mechanism is deduced from the temperature dependence of the inhibition efficiency and also from spectroscopic results. (C) 2011 Production and hosting by Elsevier B.V. on behalf of King Saud University.
引用
收藏
页码：S209 / S224
页数：16
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