Experimental and theoretical approach to the corrosion inhibition of mild steel in HCl solution by a newly coumarin

¹ 1 Applied Science Department, University of Technology, Baghdad 10001, Iraq
² Applied Science Department, University of Technology, Baghdad 10001, Iraq
³ Energy and Renewable Energies Technology Center, University of Technology, Baghdad 10001, Iraq
⁴ Department of Chemical & Process Engineering, University Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia

Published: 14 November 2019 by MDPI in The 23rd International Electronic Conference on Synthetic Organic Chemistry session General Organic Synthesis

https://doi.org/10.3390/ecsoc-23-06477

Abstract:

New coumarin namely 2-(3-(7-methylcoumarin)acetamido)benzoic acid (MAB) was successfully synthesized by reaction of ethyl 2-(7-methylcoumarin)acetate with anthranilic acid. The chemical structure of MAB was confirmed by FT-IR, NMR and CHN techniques. The inhibition performance of MAB was investigated using the weight loss method. The results illustrate the strong adsorption of MAB molecules on the mild steel coupon surface and this adsorption follows the Langmuir adsorption isotherm. DFT calculations were performed to show the relationship between the MAP molecular structure and inhibition performance.

Keywords: coumarin, corrosion inhibitor, anthranilic acid, nmr, ftir

View paper

75 Reads
0 Recommendations