Electrochemistry and XPS study of an imidazoline as corrosion inhibitor of mild steel in an acidic environment

Olivares‐Xometl, Octavio; Likhanova, Natalya V.; Martínez‐Palou, Rafael; Domínguez-Aguilar, Marco A.

doi:10.1002/maco.200805044

Cited by 76 publications

(47 citation statements)

References 39 publications

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“…The structure of the rest of the molecule influences the charge density on the functional group [6]. Most common organic inhibitors belonging to different chemical families such as fatty amides [9,10], pyridines [11,12], imidazolines [13,14], other 1,3-azoles [15,16] and polymers [17] have showed excellent performance as corrosion inhibitors.…”

Section: Figure 1 Classification Of Corrosion Inhibitorsmentioning

confidence: 99%

Emerging Corrosion Inhibitors for Interfacial Coating

2017

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Abstract:Corrosion is a deterioration of a metal due to reaction with environment. The use of corrosion inhibitors is one of the most effective ways of protecting metal surfaces against corrosion. Their effectiveness is related to the chemical composition, their molecular structures and affinities for adsorption on the metal surface. This review focuses on the potential of ionic liquid, polyionic liquid (PIL) and graphene as promising corrosion inhibitors in emerging coatings due to their remarkable properties and various embedment or fabrication strategies. The review begins with a precise description of the synthesis, characterization and structure-property-performance relationship of such inhibitors for anti-corrosion coatings. It establishes a platform for the formation of new generation of PIL based coatings and shows that PIL corrosion inhibitors with various heteroatoms in different form can be employed for corrosion protection with higher barrier properties and protection of metal surface. However, such study is still in its infancy and there is significant scope to further develop new structures of PIL based corrosion inhibitors and coatings and study their behaviour in protection of metals. Besides, it is identified that the combination of ionic liquid, PIL and graphene could possibly contribute to the development of the ultimate corrosion inhibitor based coating.

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Section: Figure 1 Classification Of Corrosion Inhibitorsmentioning

confidence: 99%

Emerging Corrosion Inhibitors for Interfacial Coating

2017

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“…Included in Figure 9 is the general trend of corrosion rate with an increasing temperature; Olivares-Xometl et Relationship between molar entropy and temperature from simulation results. Imidazoline and Corrosion behaviour with respect to temperature [19]. …”

Section: Results Presented Inmentioning

confidence: 99%

“…The pendant chain structure also influences the adsorptive capabilities of imidazoline; however, the adsorption ability of the head group should not change as the pendant group is substituted [18]. The presence of lone pairs on the chain allows the formation of co-ordinate covalent bonds, thus improving adsorption [19]. Further, the attachment of a polar group to the pendant chain will increase the hydrophilic nature due to the polar nature of water [20].…”

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confidence: 99%

Effectiveness of Imidazoline in Mitigating Transport Pipeline Corrosion

Akindeju¹,

Obanijesu²,

Boyanich³

et al. 2017

Struct Chem Crystallogr Commun

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The detrimental effects of corrosion in transportation pipelines have been a primary issue for the oil and gas industry for many years. Every year, millions of dollars are invested into corrosion inhibitors in order to minimise corrosions implication on flow assurance. Imidazoline and its derivatives have been a prevalent corrosion inhibitor owing to its good adsorption characteristics and film forming capabilities; however, there remains some uncertainty in literature pertaining to the effect of temperature on its performance. GULP simulation software was used to study the effect of temperature on the thermodynamic properties of imidazoline in carbon steel pipelines. Entropy, heat capacity, Helmholtz free energy, entropy and Gibbs free energy were influenced by changes in temperature. An optimal operating range was found to exist between 298K and 333K. Within this range, spontaneous chemisorption was occurring and the imidazoline molecules possessed enough kinetic energy to displace any bound water on the metal surface to permit the preferential adsorption of the imidazoline head group. However, beyond 333K, the kinetic energy of the system hindered the steady formation of the protective barrier, reducing its inhibitive potential. This study agrees with previous literature on the effect of temperature on the ability of imidazoline as a corrosion inhibitor, however further studies into the effect of pipeline conditions and imidazoline molecular structure are needed in order to affirm the optimal applicability of imidazoline as a corrosion inhibitor.

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“…Several families of organic compounds, i.e. fatty amides (Olivares-Xometl et al, 2006 and2008), pyridines (Abd El-Maksoud & Fouda, 2005, Ergun et al, 2008, Noor, 2009, imidazolines (García et al, 2004, Martínez-Palou et al, 2004, Olivares-Xometl et al, 2009) and other 1,3-azoles (Likhanova et al, 2007, Popova et al, 2007, Antonijevic et al, 2009) have showed excellent performance as CIs; however, the majority of these compounds are toxic and they are not in according with the environmental protection standards. By this reason, in the last years big efforts have been made by the researchers on this area to develop new environmental friendly CIs (Muthukumar et al, 2007).…”

Section: Ionic Liquids As Corrosion Inhibitorsmentioning

confidence: 99%