SYNTHESIS, CHARACTERIZATION AND THERMAL PROPERTIES OF 2,2′-DIBENZIMIDAZOLYL BUTANE AS A NOVEL CORROSION INHIBITORS FOR MILD STEEL IN SULFURIC ACID

H. El Aadad, M. Galai, A. Chahine and M. Ebn Touhami
Additional contact information
H. El Aadad: Laboratory of Physico-Chemistry of Vitreous and Crystallized Materials (LPCVCM), Faculty of Science, Ibn Tofail University, BP 133, Kenitra 14000, Morocco
M. Galai: #x2020;Laboratory of Materials Engineering and Environment
A. Chahine: Laboratory of Physico-Chemistry of Vitreous and Crystallized Materials (LPCVCM), Faculty of Science, Ibn Tofail University, BP 133, Kenitra 14000, Morocco
M. Ebn Touhami: #x2020;Laboratory of Materials Engineering and Environment

Surface Review and Letters (SRL), 2020, vol. 27, issue 03, 1-15

Abstract: This work aims at synthesis and characterization of 2,2′-dibenzimidazolyl butane as an effective corrosion inhibitor of mild steel in sulfuric acid solution. A simple and efficient method for its synthesis in described. The chemical structure and surface morphology of 2,2′-dibenzimidazolyl butane were characterized by mass spectrometry (MS), Fourier transform infrared (FTIR), Raman, 1H, 13C NMR spectroscopy and transmission electron microscopy (TEM). Its thermal decomposition and its variation in mass was studied by thermogravimetric analysis (TGA) coupled with differential thermal analysis (DTA). The molecular mass of 2,2′-dibenzimidazolyl butane was determined to be at 290g/mol and its degradation was achieved at 455∘C. Then, the corrosion inhibition efficiency of 2,2′-dibenzimidazolyl butane was studied with various concentrations in 0.5 M H2SO4 solution for mild steel by the potentiodynamic polarization and the electrochemical measurements. According to the results of electrochemical impedance spectroscopy, the inhibition efficiency decreased with concentration and reached its maximum (95.5%) at 100ppm. The polarization measurements showed that the prepared inhibitor acts as a cathodic type inhibitor. The mass loss tests are in accordance with the results of electrochemical measurements.

Keywords: Benzimidazole; structural characterization; corrosion inhibitor; electrochemical measurements; potentiodynamic polarization; mild steel (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X19501154
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:27:y:2020:i:03:n:s0218625x19501154

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X19501154

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().