Enhancing the inhibition action of cationic surfactant with sodium halides for mild steel in 0.5M H2SO4

Khamis, Aidee Kamal; Saleh, Mahmoud M.; Awad, Mohamed I.; El‐Anadouli, Bahgat E.

doi:10.1016/j.corsci.2013.04.026

Cited by 57 publications

(14 citation statements)

References 41 publications

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“…But when the temperature is high, the adsorbed inhibitor tends to desorbed from the steel surface. Generally, the absolute value of ∆G 0 ads is -20 kJ/mol lower than -20 kJ/mol, they are consistent with the electrostatic interaction between the charged molecules and the charged metal called physical adsorption (physisorption); when those that are -40 kJ/mol or more negative than -40 kJ/mol, which involve sharing or transfer of electrons from the inhibitor molecules to the metal surface to form a coordinate bond called chemical adsorption (chemisorption) [50][51][52] . Here, the calculated value of ∆G 0 ads for hexadecylamine from table are found to be ranged from -25.40 to -26.08 kJ mol -1 for different immersion time which indicate that the adsorption process of inhibitor on metal surface is mixed physical and chemical adsorption called physiochemical adsorption [53][54][55] .…”

Section: Figures 3(a-c) Langmuir Adsorption Isothermmentioning

confidence: 69%

Corrosion Inhibition for Mild Steel in Acidic Medium by Using Hexadecylamine as Corrosion Inhibitor

2017

Chem Sci Trans

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Abstract:The corrosion study of mild steel in 1.0 M HCl solution at 298, 308 and 318 K using various concentrations of hexadecylamine as corrosion inhibitor for different immersion time were carried out by weight loss technique and other different techniques i.e. Potentiodynamic polarization, Electrochemical impedance spectroscopy (EIS) at 298 K and SEM techniques. The adsorption of this molecule leads to the formation of a protective layer on mild steel. From the weight loss measurement the maximum percentage corrosion inhibition efficiency 96.26% was observed for 1000 ppm concentration of inhibitor at 298 K. By electrochemical impedance study it observed that charge transfer resistance (R ct ) value increases and double layer capacitance (C dl ) value decreases with increasing the inhibitior concentration hence inhibition efficiency increases which related to the charge transfer resistance. From potentiodynamic polarization study it was observed that hexadecylamine behave as mixed type corrosion inhibitor. Adsorption of inhibitor on the mild steel surface is in agreement with the Langmuir adsorption isotherm. From the surface study it can be seen that on increasing the inhibitor concentration there is formation of protective layer on the surface of mild steel to protect the surface against corrosion and surface become smooth and more clean and clear. All above techniques study shows that hexadecylamine is a good corrosion inhibitor for mild steel in 1.0 M HCl solution.

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Section: Figures 3(a-c) Langmuir Adsorption Isothermmentioning

confidence: 69%

Corrosion Inhibition for Mild Steel in Acidic Medium by Using Hexadecylamine as Corrosion Inhibitor

2017

Chem Sci Trans

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“…(2) From the view of molecule structure, because there is a hydroxyl group in the molecule, O-n molecules adsorbed may connect each other by hydrogen bonds on X70 surface, which consolidates the adsorption. (3) The positively charged nitrogen in O-n will be attracted by Cl À or Br À on X70 steel surface through electrostatic interaction [48,49]. (4) As widely recognized, the outmost electron configuration of iron atom is 3d 6 4s 2 , which endows iron atom with the ability of offering or accepting electrons.…”

Section: The Anode and Cathode Protection Of X70 Steel By O-nmentioning

confidence: 99%

Synthesis and inhibition of N-alkyl-2-(4-hydroxybut-2-ynyl) pyridinium bromide for mild steel in acid solution: Box–Behnken design optimization and mechanism probe

Chen

Jiang

et al. 2015

Corrosion Science

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“…Ayrıca 3AMP yapısında bulunan amin grubu sayesinde yumuşak çelik yüzeyine daha kuvvetli adsorplanabilir. Çünkü N gibi ortaklanmamış elektron çifti içeren sübstitüentler içeren yapılarda elektron yoğunluğu yüksek bölgeler sayesinde metal yüzeyine tutunma olasılığı artmaktadır [9][10][11][12][13][14][15][16]. 3AMP molekülü hem heterosiklik halkadaki N bölgesi hem de amin ucundaki N bölgesi sayesinde adsorpsiyonu destekleyebilir.…”

Section: öNceki̇ çAlişmalarunclassified

Yumuşak Çeliğin Korozyon Davranışı

Mert

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖzBu çalışmada yumuşak çeliğin (YÇ) asidik ortamındaki korozyon davranışına 3-Amino metil piridin'in (3AMP) inhibitör etkisi araştırılmıştır. Elektrokimyasal teknikler (elektrokimyasal impedans spektroskopisi ve polarizasyon ölçümleri) ve kuantum kimyasal hesaplamalar uygulanmıştır. Elde edilen sonuçlara göre; 3AMP'nin inhibisyon etkinliği artan 3AMP derişimi ile artış göstermiştir. 50 mM 3AMP içeren 0,5 M HCl çözeltisinde inhibisyon etkinliği %97 olarak tespit edilmiştir. Polarizasyon ölçümleri 3AMP'nin hem katodik hem de anodik reaksiyonların hızını azalttığını göstermektedir. Yüksek inhibisyon etkinliği, teorik olarak belirlenen yüksek HOMO enerjisi (-6,937 eV), dipol momenti (2,473 D) ve düşük LUMO enerjisi (-1,05 eV) ile ilişkilendirilmiştir. Belirlenen Mulliken yüklere göre; N atomları üzerindeki negatif yük sebebiyle 3AMP'nin yumuşak çelik yüzeyine adsorpsiyonunun amin ve/veya N ucundan gerçekleşebileceği düşünülmektedir. Anahtar Kelimeler: Korozyon, Yumuşak çelik, 3-Amino metil piridin The Corrosion Behavior of Mild Steel AbstractIn this study, the inhibition effect of 3-aminomethyl pyridine (3AMP) on mild steel corrosion behavior in acidic medium is investigated. The electrochemical techniques (electrochemical impedance spectroscopy and polarization measurements) and quantum chemical calculations were obtained. The results showed that; inhibition efficiencies increase with increasing concentration of 3AMP. The inhibition efficiency is 97% in 50 mM 3AMP containing 0.5 M HCl solution. It is found that 3AMP retards both anodic and cathodic reactions according to polarization measurements. The high inhibition efficiency of 3AMP is attributed to the high value of EHOMO (-6.937 eV), dipole moment μ (2.473 D) and low value of ELUMO (-1.049 eV). According to calculated Mulliken charges; the adsorption of 3AMP may be occurred on amine and/N terminal of molecule.

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Enhancing the inhibition action of cationic surfactant with sodium halides for mild steel in 0.5M H2SO4

Cited by 57 publications

References 41 publications

Corrosion Inhibition for Mild Steel in Acidic Medium by Using Hexadecylamine as Corrosion Inhibitor

Corrosion Inhibition for Mild Steel in Acidic Medium by Using Hexadecylamine as Corrosion Inhibitor

Synthesis and inhibition of N-alkyl-2-(4-hydroxybut-2-ynyl) pyridinium bromide for mild steel in acid solution: Box–Behnken design optimization and mechanism probe

Yumuşak Çeliğin Korozyon Davranışı

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