sym-Trisubstituted 1,3,5-Triazine Derivatives as Promising Organic Corrosion Inhibitors for Steel in Acidic Solution

El‐Faham, Ayman; Dahlous, Kholood A.; ALOthman, Zeid A.; Al‐Lohedan, Hamad A.; El-Mahdy, Gamal A.

doi:10.3390/molecules21040436

Cited by 30 publications

(34 citation statements)

References 37 publications

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“…Compounds containing a quinoline core also showed anticorrosive activity in iron and steel in acidic solution [31] [32] [33]. Similarly, triazine derivatives presented anticorrosive activity in aluminum and steel in acidic me-Advances in Chemical Engineering and Science dium [34] [35] [36] [37]. In addition, compounds containing the morpholine group exhibited anticorrosive activity, mainly in steel, in acidic media [38] [39].…”

Section: Introductionmentioning

confidence: 96%

Synthesis and Evaluation of Corrosion Inhibiting Activity of New Molecular Hybrids Containing the Morpholine, 1,4-Naphthoquinone, 7-Chloroquinoline and 1,3,5-Triazine Cores

Westphal¹,

Pina²,

Franco³

et al. 2020

ACES

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Three molecules containing morpholine, 1,4-naphthoquinone, 7-chloroquinoline and 1,3,5-triazine cores, scaffolds with recognized anti-corrosive activity, were synthesized and had their anticorrosive activity evaluated through potentiodynamic polarization and electrochemical impedance studies. Both studies were conducted in a simulated production water medium containing 150,000 mg•L −1 Cl − and 5 mg•L −1 S 2−. Corrosion inhibition efficiency ranged from 67%-86%, amongst which the naphthoquinone-containing derivative (compound 1) was the most effective. These compounds act through formation of a protective film on the surface of AISI 316 stainless steel. Investigation of the molecular properties of the prepared inhibitors by DFT calculations revealed that the LUMO energy and chemical hardness of the molecules can be directly correlated with their inhibition efficiency.

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Section: Introductionmentioning

confidence: 96%

Synthesis and Evaluation of Corrosion Inhibiting Activity of New Molecular Hybrids Containing the Morpholine, 1,4-Naphthoquinone, 7-Chloroquinoline and 1,3,5-Triazine Cores

Westphal¹,

Pina²,

Franco³

et al. 2020

ACES

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“…The presence of lone pair of electrons on nitrogen atoms, π‐electron on the phenyl ring, is the important structural features through which they can easily adsorb on the metal surface and bring down corrosion. A few triazine derivatives have been reported as corrosion inhibitors . A perusal of literature shows that there is no report on the use of triazines as corrosion inhibitors for N80 steel in 15% HCl.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound‐assisted synthesis of substituted triazines and their corrosion inhibition behavior on N80 steel/acid interface

Salman

Ansari

Haque

et al. 2020

Journal of Heterocyclic Chem

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The three substituted triazines were synthesized by ultrasound irradiation method and characterized by FTIR, 13 C NMR, and 1 H NMR. The corrosion inhibition behavior of the synthesized inhibitors on N80 steel in 15% HCl was studied using electrochemical analyses and weight loss methods. All three inhibitors exhibited excellent corrosion inhibition performance, and the best inhibition effect was shown by TZ-3 (93.2% at 800 mg/L). EIS measurements suggest that the corrosion inhibition process is a charge transfer controlled. The PDP results indicated that all the triazines are mixed-type inhibitors.Langmuir adsorption model is the best fit among the other tested isotherms.These molecules can act as promising acidizing corrosion inhibitors for the oil gas industry. FTIR, AFM, and UV-vis studies corroborate the adsorption of inhibitor molecules over the metal surface.

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“…Recently, we reported novel s -triazine derivatives as promising organic inhibitors (Figure 1) [27], and the reported results for electrochemical process revealed that, as the nitrogen content increased in the terminal chain, the effeciency for the corrosion protection of steel in acidic solution increased.…”

Section: Introductionmentioning

confidence: 99%

“…Herein, we report easily prepared compounds with relatively low molecular weight and cheaper materials than the reported ones for triazine deriavtives [23,24,25,26,27] to stress the flexibility and the effect of the number of hydrazino groups along with the methoxy groups that directly attached to the triazine ring for corrosion inhibition of steel in acidic media.…”

Section: Introductionmentioning

confidence: 99%

Hydrazino-methoxy-1,3,5-triazine Derivatives’ Excellent Corrosion Organic Inhibitors of Steel in Acidic Chloride Solution

et al. 2016

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Abstract:The corrosion inhibition performance of 2-hydrazino-4,6-dimethoxy-1,3,5-tirazine (DMeHT), 2,4-dihydrazino-6-methoxy-1,3,5-triaizine (DHMeT), and 2,4,6-tridydrazino-1,3,5-triaizne (TH 3 ) on steel corrosion in acidic media was examined using electrochemical techniques. The results showed 2,4-Ddihydrazino-6-methoxy-1,3,5-triaizine (DHMeT) gave the best corrosion protection performance among the other hydrazino derivatives even at a low concentration of 25 ppm (95%). The number of hydrazino groups play an important role in the corrosion inhibition, where the two hydrazine groups increased the electrostatic interactions between the protonated tested compounds, the negatively charged steel surface resulted from the adsorption of the chloride anions, and the presence of the methoxy group made the compound more reliable for formation of film protection on the surface of steel through the lone pair of oxygen atoms. Electrochemical Impedance Spectroscopy (EIS) measurements suggested that the corrosion process of steel in presence of the hydrazino-s-triazine derivatives (TH 3 , DMeHT and DHMeT) were being controlled by the charge transfer reaction. Polarization curves indicated that the examined TH 3 , DMeHT and DHMeT behaved as mixed type inhibitors.

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sym-Trisubstituted 1,3,5-Triazine Derivatives as Promising Organic Corrosion Inhibitors for Steel in Acidic Solution

Cited by 30 publications

References 37 publications

Synthesis and Evaluation of Corrosion Inhibiting Activity of New Molecular Hybrids Containing the Morpholine, 1,4-Naphthoquinone, 7-Chloroquinoline and 1,3,5-Triazine Cores

Synthesis and Evaluation of Corrosion Inhibiting Activity of New Molecular Hybrids Containing the Morpholine, 1,4-Naphthoquinone, 7-Chloroquinoline and 1,3,5-Triazine Cores

Ultrasound‐assisted synthesis of substituted triazines and their corrosion inhibition behavior on N80 steel/acid interface

Hydrazino-methoxy-1,3,5-triazine Derivatives’ Excellent Corrosion Organic Inhibitors of Steel in Acidic Chloride Solution

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