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Journal of Chemistry
Volume 2017 (2017), Article ID 2871034, 14 pages
https://doi.org/10.1155/2017/2871034
Research Article

Fatty Amides from Crude Rice Bran Oil as Green Corrosion Inhibitors

1Tecnológico Nacional de México, Instituto Tecnológico de Zacatepec, Calzada Instituto Tecnológico 27, 62780 Zacatepec, MOR, Mexico
2Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad, s/n, 62210 Cuernavaca, MOR, Mexico
3CIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, Mexico
4Corrosion y Protección (CyP), Buffon 46, 11590 Mexico City, Mexico

Correspondence should be addressed to J. Porcayo-Calderon

Received 1 February 2017; Revised 27 March 2017; Accepted 5 April 2017; Published 18 May 2017

Academic Editor: Hassan Arida

Copyright © 2017 E. Reyes-Dorantes et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Due to its high oil content, this research proposes the use of an agroindustrial byproduct (rice bran) as a sustainable option for the synthesis of corrosion inhibitors. From the crude rice bran oil, the synthesis of fatty amide-type corrosion inhibitors was carried out. The corrosion inhibitory capacity of the fatty amides was evaluated on an API X-70 steel using electrochemical techniques such as real-time corrosion monitoring and potentiodynamic polarization curves. As a corrosive medium, a CO2-saturated solution (3.5% NaCl) was used at three temperatures (30, 50, and 70°C) and different concentrations of inhibitor (0, 5, 10, 25, 50, and 100 ppm). The results demonstrate that the sustainable use of agroindustrial byproducts is a good alternative to the synthesis of environmentally friendly inhibitors with high corrosion inhibition efficiencies.