<scp>l</scp>-Proline-promoted synthesis of 2-amino-4-arylquinoline-3-carbonitriles as sustainable corrosion inhibitors for mild steel in 1 M HCl: experimental and computational studies

Verma, Chandrabhan; Quraishi, M.A.; Olasunkanmi, Lukman O.; Ebenso, Eno E.

doi:10.1039/c5ra16982h

Cited by 155 publications

(68 citation statements)

References 62 publications

(51 reference statements)

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“…Moreover, rapid etching, molecular rearrangement and/or fragmentation and desorption of the adsorbed inhibitor molecules at elevated temperature may also decrease the inhibition efficiency474849. The Arrhenius equation can be used successfully to explain the effect of temperature on the inhibition performance of studied compounds.…”

Section: Resultsmentioning

confidence: 99%

Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Verma

Quraishi

Kluza

et al. 2017

Sci Rep

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149

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D-glucose derivatives of dihydropyrido-[2,3-d:6,5-d′]-dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone (GPHs) have been synthesized and investigated as corrosion inhibitors for mild steel in 1M HCl solution using gravimetric, electrochemical, surface, quantum chemical calculations and Monte Carlo simulations methods. The order of inhibition efficiencies is GPH-3 > GPH-2 > GPH-1. The results further showed that the inhibitor molecules with electron releasing (-OH, -OCH3) substituents exhibit higher efficiency than the parent molecule without any substituents. Polarization study suggests that the studied compounds are mixed-type but exhibited predominantly cathodic inhibitive effect. The adsorption of these compounds on mild steel surface obeyed the Langmuir adsorption isotherm. SEM, EDX and AFM analyses were used to confirm the inhibitive actions of the molecules on mild steel surface. Quantum chemical (QC) calculations and Monte Carlo (MC) simulations studies were undertaken to further corroborate the experimental results.

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Section: Resultsmentioning

confidence: 99%

Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Verma

Quraishi

Kluza

et al. 2017

Sci Rep

Self Cite

149

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“…The Bode plots (log Z vs. log f) having a linear relationship between log Z against log f slope values are shown in Table S2 and it lies near to −1 and the phase angle value become 90° due to capacitive behaviour . In these plots, impedance value increases in the presence of the inhibitors compared to that in absence of the inhibitor, due to the reduced corrosion rate with increase in the concentration of inhibitors.…”

Section: Resultsmentioning

confidence: 99%

Adsorption Effect of Five‐Membered and Six‐Membered Alicyclic Amine‐Derived Mannich Bases on Mild Steel Surface in 1.0 M HCl

Nesaian

Prabhu

2017

ChemistrySelect

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Two new Mannich bases N‐(3‐(benzo[d][1, 3]dioxol‐5‐yl(pyrrolidin‐1‐yl)methyl)‐4‐hydroxyphenyl)acetamide (I1) and N‐(3‐(benzo[d][1, 3]dioxol‐5‐yl(morpholino)methyl)‐4‐hydroxyphenyl) acetamide (I2) are synthesised and evaluated their corrosion inhibition behaviour through weight loss measurements, electrochemical, quantum chemical and surface analytical studies. Tafel studies revealed that the inhibitors are found to be mixed type. EIS studies confirmed that corrosion process is controlled through charge transfer process. The adsorption of inhibitors I1 and I2 follows Langmuir adsorption isotherm and ΔGads values suggest that both physorption and chemisorption are possible. Surface studies show that in the presence of inhibitors, smoother surface is obtained compared to blank. I1 has higher inhibition efficiency (50 μM −98%) than I2 (50 μM −94%) which is correlated with the theoretical studies.

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“…Only few catalysts were reported for the effective synthesis of 2,3‐disubstituted 4‐ phenylquinolines ,. L‐Proline was one of the catalysts that was available to catalyse this reaction,, it was not reusable, needed heavy catalyst load (20 mol%) and long reaction time (12 h) . Recently, Swathi Bandaru et al .…”

Section: Introductionmentioning

confidence: 99%

Porphyrin Cored Amine Functionalized Dendritic Polymer: An Efficient Reusable Catalyst for Quinoline Synthesis

et al. 2019

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A novel porphyrin cored amine functionalized dendritic polymer was effectively synthesized by divergent method. It was identified as an effective homogeneous organo catalyst for the synthesis of quinoline derivatives, from aromatic aldehyde, aromatic amine and malononitrile. The reaction was completed within one hour with high yield (87% ‐ 93%) in 2:1 ratio of water and ethanol medium at 60 °C. Porphyrin cored dendritic polymer has a number of amino groups on its surface; hence it acts as a very good base catalyst. Separation and reuse of the catalyst from the product was easy due to its water soluble nature. This is the first reported synthesis of Quinoline derivatives using dendritic polymer as an organo catalyst.

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l-Proline-promoted synthesis of 2-amino-4-arylquinoline-3-carbonitriles as sustainable corrosion inhibitors for mild steel in 1 M HCl: experimental and computational studies

Abstract: The inhibition of mild steel corrosion in 1 M HCl by 3-aryl substituted 2-aminoquinoline-3-carbonitriles has been investigated using weight loss, electrochemical, surface and quantum chemical calculation methods.

Cited by 155 publications

References 62 publications

Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Corrosion inhibition of mild steel in 1M HCl by D-glucose derivatives of dihydropyrido [2,3-d:6,5-d′] dipyrimidine-2, 4, 6, 8(1H,3H, 5H,7H)-tetraone

Adsorption Effect of Five‐Membered and Six‐Membered Alicyclic Amine‐Derived Mannich Bases on Mild Steel Surface in 1.0 M HCl

Porphyrin Cored Amine Functionalized Dendritic Polymer: An Efficient Reusable Catalyst for Quinoline Synthesis

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