Triazolic compounds as corrosion inhibitors for copper in hydrochloric acid
Authors:
- S. El IssamiSIS. El Issami
- L. BazziLBL. Bazzi
- M. MihitMMM. Mihit
- B. HammoutiB. Hammouti
- S. KertitSKS. Kertit
- E. Ait AddiEAE. Ait Addi
- R. SalghiR. Salghi
- 29 May 2007
- journal article
- Published by Emerald Publishing in Pigment & Resin Technology
- Vol. 36 (3) , 161-168
Abstract
Purpose: To correlate the inhibitory effect of triazole compounds on the corrosion of copper in HCl at various temperatures by semi‐empirical molecular orbital theory.Design/methodology/approach: Two triazoles were selected as the best inhibitors among the triazole compounds tested. Gravimetric and electrochemical measurements were conducted.Findings: Correlation between inhibition efficiency and calculation of molecular orbital of triazole compounds was obtained. Cu(I)‐triazole complex formation was confirmed by UV spectroscopy.Research limitations/implications: The calculation of energetic levels of molecular orbital may be a tool to explain the classification of inhibitor efficiency.Practical implications: The theoretical calculation is a complementary mean to selecting an efficient inhibitor among a given series. Good agreement between the experimental methods explored and theoretical calculations was observed.Originality/value: The originality of this work was the finding of the correlation between energetic levels of orbital molecular and inhibitor efficiency of triazole compounds. The confirmation of the formation of Cu(I)‐triazole by UV‐visible spectroscopy was also new.Keywords
This publication has 40 references indexed in Scilit:
- Inhibition of copper corrosion in acidic pickling solutions by N-phenyl-1,4-phenylenediamineElectrochimica Acta, 2006
- Ortho-substituted anilines to inhibit copper corrosion in aerated 0.5 M hydrochloric acidElectrochimica Acta, 2004
- Inhibition de la corrosion du cuivre en milieu HCl 0,5 M par les composes organiques de type triazoleInhibition of copper corrosion in HCl 0.5 M medium by some triazolic compoundsAnnales de Chimie - Science des Matériaux, 2002
- Investigation of inhibition of 2-mercaptobenzoxazole for copper corrosionElectrochimica Acta, 2000
- In Situ Studies of Imidazole and Its Derivatives as Copper Corrosion Inhibitors. I. Activation Energies and Thermodynamics of AdsorptionJournal of the Electrochemical Society, 2000
- Corrosion Protection on Copper by Imidazole and its DerivativesCorrosion, 1999
- An investigation of copper corrosion inhibition in chloride solutions by benzo-hydroxamic acidsElectrochimica Acta, 1998
- Molecular Orbital Theoretical Studies of Some Organic Corrosion InhibitorsCorrosion, 1997
- Rotating Ring‐Disk Electrode Studies of Cu‐Zn Alloy Electrodissolution in 1M HCl: Effect of BenzotriazoleJournal of the Electrochemical Society, 1993
- The Chemistry of Azole Copper Corrosion Inhibitors in Cooling WaterCorrosion, 1985