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

Nnenna Winifred Odozi; Jonathan Oyebamiji Babalola; Ekemini Bassey Ituen; Abiodun Omokehinde Eseola

doi:doi:10.11648/j.ajpc.s.2015040101.11

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

Nnenna Winifred Odozi, Jonathan Oyebamiji Babalola, Ekemini Bassey Ituen, Abiodun Omokehinde Eseola

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

Received: 20 October 2014 Accepted: 23 October 2014 Published: 7 January 2015

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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

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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

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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

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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

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@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}
}

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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  -

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Author Information

Nnenna Winifred Odozi

Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria
Jonathan Oyebamiji Babalola

Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria
Ekemini Bassey Ituen

Department of Chemistry, University of Uyo, Uyo, Akwa Ibom State, Nigeria
Abiodun Omokehinde Eseola

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

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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

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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

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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

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@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}
}

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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  -

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