| Peer-Reviewed

Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid

Received: 20 October 2014     Accepted: 23 October 2014     Published: 7 January 2015
Views:       Downloads:
Abstract

Corrosion behavior of mild steel immersed in 0.5 M H2SO4 and corrosion inhibition in the presence of different concentrations of 2,4-di-tert-butyl-6-(1h-phenantro[9,10-d]imidazol-2-yl) phenol (PIP) was investigated using weight loss and hydrogen evolution techniques at 303 – 333 K. The results indicate a maximum inhibition efficiency of 68.45% in the presence of 10 x 10-5 M PIP at 303 K. The inhibitory action of PIP in the acid solution is best described by Temkin adsorption isotherm. The Arrhenius and transition state equations are used to calculate activation parameters and the mechanism of physical adsorption is proposed for PIP from the values of Ea and ΔG*ads obtained. Thermodynamic studies indicate that the adsorption of PIP to the metal surface is spontaneous. Quantum chemical calculations using DFT is used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of the molecule PIP. PIP protected the mild steel against corrosion in the acid medium at the studied temperatures by virtue of adsorption. The corrosion rate increased with temperature both in the absence and presence of the inhibitor, but the increase was lesser in the presence of the inhibitor compared to that of the free acid solution. The inhibition efficiency increased with increase in concentration of the inhibitors.

Published in American Journal of Physical Chemistry (Volume 4, Issue 1-1)

This article belongs to the Special Issue Paradigm Shift in Corrosion Studies and Elucidation of Mechanism of Corrosion Inhibition

DOI 10.11648/j.ajpc.s.2015040101.11
Page(s) 1-9
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Adsorption Isotherm, Corrosion Inhibitors, Density Functional Theory (DFT), Mild Steel, Physical Adsorption, Imidazole

References
[1] Brown, E. E. Kluwer Academic Press, New York. 1998
[2] Talati, J. D. and Gandhi D. K. Corros. Sci. 2003, 23 (12): 1315 – 1332
[3] Umoren, S. A., Obot, I. B., Ebenso,E. E., Obi- Egbedi, N. Portuga. Electrochim. acta. 2008,26: 199-209
[4] N.O. Obi-Egbedi, and I.B.Obot. Arab. Journ. Chem. 2010, 5 (1): 121-133
[5] Eseola, A. O.; Li, W.; Sun, W. H.; Zhang, M.; Xiao, L.; Woods, J. A. O. Dyes & Pigmen. 2011, 88: 262-273.
[6] Umoren, S. A., Solomon, M. M., Udousoro, I. I., Udoh, A.P. Cellulos. 2010, 17: 635-648.
[7] Umoren, S. A. Cellulos. 2008 (a),15: 751–761.
[8] Umoren, S. A., Ekanem, U. F. Chem. Eng. Commun. 2010, 197: 1339-1356.
[9] E. Jamalizadeh, S.M.A. Hosseini and A.H. Jafari. Corros. Sci. 2009, 51: 1428–1435
[10] Oguzie, E. E. Mater Chem Phys. 2006, 99 (2/3): 441-446.
[11] Olivares, O., Likhanova, N. V., Gomez, B., Navearreie, J., Llanoserrano M. E., Arce, E., Hallen, J. M.. Appl. Surf. Sci. 2006, 252: 2894-2909.
[12] Umoren, S. A. Cellulos. 2008 (b), 15: 751–761.
[13] Martinez, S. and Stern, I. J. Appli. Electrochem. 2001, 31 (9): 973-978.
[14] El-Etre, A. Y. Corros. Sci. 2003, 45 (11): 2485-2495.
[15] Ituen, E. B. and Udo, U. E. Der Chimic. Act. 2012, 3 (6): 1394-1405
[16] Ituen, E. B., Odozi, N. W., Udo, U.E., Dan, E. U. IOSR-J. Appli. Chem. 2013, 3 (4): 52-59
[17] Bentiss, F., Traisnel M., Chaibi N, Mernari B, Vezin H, Lagrenee M. Corros. Sci. 44 2002, (10): 2271-2289.
[18] Umoren, S. A., Ogbobe, O., Igwe, I. O., Ebenso, E. E. Corros. Sci. 2008, 50: 1998-2006.
[19] Gece,G. Corros. Sci. 2008, 50: 2981
[20] Dwivedi, A., Misra, N. Der.Pharma. Chem. 2010, 2: 58 - 65.
[21] N.O. Obi-Egbedi, K.E. Essien, I.B.Obot. J. Comput. Method Mol. Design, 2011, 1(1): 26-43
[22] Xia, S., Qiu, M., Yu, L., Lui, F., Zhao, H. Corrs. Sci. 2008, 50 :2021-2029
Cite This Article
  • APA Style

    Nnenna Winifred Odozi, Jonathan Oyebamiji Babalola, Ekemini Bassey Ituen, Abiodun Omokehinde Eseola. (2015). Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid. American Journal of Physical Chemistry, 4(1-1), 1-9. https://doi.org/10.11648/j.ajpc.s.2015040101.11

    Copy | Download

    ACS Style

    Nnenna Winifred Odozi; Jonathan Oyebamiji Babalola; Ekemini Bassey Ituen; Abiodun Omokehinde Eseola. Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid. Am. J. Phys. Chem. 2015, 4(1-1), 1-9. doi: 10.11648/j.ajpc.s.2015040101.11

    Copy | Download

    AMA Style

    Nnenna Winifred Odozi, Jonathan Oyebamiji Babalola, Ekemini Bassey Ituen, Abiodun Omokehinde Eseola. Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid. Am J Phys Chem. 2015;4(1-1):1-9. doi: 10.11648/j.ajpc.s.2015040101.11

    Copy | Download

  • @article{10.11648/j.ajpc.s.2015040101.11,
      author = {Nnenna Winifred Odozi and Jonathan Oyebamiji Babalola and Ekemini Bassey Ituen and Abiodun Omokehinde Eseola},
      title = {Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid},
      journal = {American Journal of Physical Chemistry},
      volume = {4},
      number = {1-1},
      pages = {1-9},
      doi = {10.11648/j.ajpc.s.2015040101.11},
      url = {https://doi.org/10.11648/j.ajpc.s.2015040101.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.s.2015040101.11},
      abstract = {Corrosion behavior of mild steel immersed in 0.5 M H2SO4 and corrosion inhibition in the presence of different concentrations of 2,4-di-tert-butyl-6-(1h-phenantro[9,10-d]imidazol-2-yl) phenol (PIP) was investigated using weight loss and hydrogen evolution techniques at 303 – 333 K. The results indicate a maximum inhibition efficiency of 68.45% in the presence of 10 x 10-5 M PIP at 303 K. The inhibitory action of PIP in the acid solution is best described by Temkin adsorption isotherm. The Arrhenius and transition state equations are used to calculate activation parameters and the mechanism of physical adsorption is proposed for PIP from the values of Ea and ΔG*ads obtained. Thermodynamic studies indicate that the adsorption of PIP to the metal surface is spontaneous. Quantum chemical calculations using DFT is used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of the molecule PIP. PIP protected the mild steel against corrosion in the acid medium at the studied temperatures by virtue of adsorption. The corrosion rate increased with temperature both in the absence and presence of the inhibitor, but the increase was lesser in the presence of the inhibitor compared to that of the free acid solution. The inhibition efficiency increased with increase in concentration of the inhibitors.},
     year = {2015}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Imidazole Derivative as Novel Effective Inhibitor of Mild Steel Corrosion in Aqueous Sulphuric Acid
    AU  - Nnenna Winifred Odozi
    AU  - Jonathan Oyebamiji Babalola
    AU  - Ekemini Bassey Ituen
    AU  - Abiodun Omokehinde Eseola
    Y1  - 2015/01/07
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ajpc.s.2015040101.11
    DO  - 10.11648/j.ajpc.s.2015040101.11
    T2  - American Journal of Physical Chemistry
    JF  - American Journal of Physical Chemistry
    JO  - American Journal of Physical Chemistry
    SP  - 1
    EP  - 9
    PB  - Science Publishing Group
    SN  - 2327-2449
    UR  - https://doi.org/10.11648/j.ajpc.s.2015040101.11
    AB  - Corrosion behavior of mild steel immersed in 0.5 M H2SO4 and corrosion inhibition in the presence of different concentrations of 2,4-di-tert-butyl-6-(1h-phenantro[9,10-d]imidazol-2-yl) phenol (PIP) was investigated using weight loss and hydrogen evolution techniques at 303 – 333 K. The results indicate a maximum inhibition efficiency of 68.45% in the presence of 10 x 10-5 M PIP at 303 K. The inhibitory action of PIP in the acid solution is best described by Temkin adsorption isotherm. The Arrhenius and transition state equations are used to calculate activation parameters and the mechanism of physical adsorption is proposed for PIP from the values of Ea and ΔG*ads obtained. Thermodynamic studies indicate that the adsorption of PIP to the metal surface is spontaneous. Quantum chemical calculations using DFT is used to calculate some electronic properties of the molecule in order to ascertain any correlation between the inhibitive effect and molecular structure of the molecule PIP. PIP protected the mild steel against corrosion in the acid medium at the studied temperatures by virtue of adsorption. The corrosion rate increased with temperature both in the absence and presence of the inhibitor, but the increase was lesser in the presence of the inhibitor compared to that of the free acid solution. The inhibition efficiency increased with increase in concentration of the inhibitors.
    VL  - 4
    IS  - 1-1
    ER  - 

    Copy | Download

Author Information
  • Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria

  • Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria

  • Department of Chemistry, University of Uyo, Uyo, Akwa Ibom State, Nigeria

  • Department of Chemistry, Redeemers University, Ede, Ogun State, Nigeria

  • Sections