Title:Meloxicam Performances for Copper Corrosion Inhibition in 1M
HNO3: Experimental and Theoretical Approaches
Volume: 13
Issue: 1
Author(s): Ehouman Ahissan Donatien*, Bamba Amara, Mariko Kalifa, Kouakou Eric, Diabate Massogbè, Sanou Ali, Kouakou Adjoumani Rodrigue and Niamien Paulin Marius
Affiliation:
- Laboratoire de Thermodynamique et Physico-Chimie du Milieu, UFR SFA, Université Nangui Abrogoua, 02
BP 801 Abidjan 02, Côte-d’Ivoire
Keywords:
Copper, corrosion inhibition, meloxicam, mass loss technique, DFT calculations, degradation.
Abstract:
Background: Copper is a metal that is widely used in many fields such as industry
and construction, etc. These different industrial sectors use acid solutions such as
nitric acid and hydrochloric acid, etc. The use of acid solutions in the industrial environment
causes degradation of materials. In recent decades, the use of corrosion inhibitors
has become very essential.
Objective: The objective of our study is to test the performance of meloxicam as a copper
corrosion inhibitor in a nitric acid medium.
Methods: The studies were conducted using the gravimetric method and density functional
theory (DFT) at B3LYP/6-311G (d, p) level of theory. The inhibitory efficiency
of the molecule increases with increasing concentration of Meloxicam, but decreases
with increasing temperature. The adsorption of the molecule on the copper surface follows
the Villamil model.
Results: The thermodynamic quantities of adsorption and activation were determined
and discussed. Quantum chemical calculations have allowed determining the molecular
descriptors.
Conclusion: There is a good agreement between the experimental and theoretical results.
Electrochemical studies are envisaged.
