BIA, DPA, MBTA and DMA as Vapour Phase Corrosion Inhibitors for Mild Steel under Different Atmospheric Conditions

Kumar, Harish; Yadav, Vikas

doi:10.18052/www.scipress.com/ilcpa.20.52

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Among the imidazole derivatives, benzimidazoles have also been extensively studied on different metals in various corrosive media . Xhanari and Finšgar studied copper corrosion in NaCl solution in the presence of 2‐aminobenzimidazole (2‐ABI) using different techniques.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical evaluation of two benzimidazole derivatives for steel corrosion protection in HCl

Zafari

Sarabi

Movassagh

2019

Asia-Pacific J Chem Eng

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The introduction of two new benzimidazole derivatives, 2-nonyl-1H-benzo [d] imidazole (NB) and 2-benzyl-1-hexyl-1H-benzo [d]imidazole (HB), as corrosion inhibitors for steel is presented, and their activities are compared with 1Hbenzo[d]imidazole (B). The experimental performance of these molecules was evaluated by electrochemical techniques, surface observations, and contact angle measurement. The results showed the prominent action with inhibition efficiencies of 98.8% and 99.3% for 3 mM of NB and HB, respectively, at 303K. They are adsorbed on the metal surface base on Langmuir isotherm. It is noteworthy to note that increment of environment acidity causes more efficiency for both molecules so that the order of inhibitive activity in different pHs is pH = 2>pH = 1>pH = 0.1. Additionally, HB provides little better protection than NB. Statistical analysis was conducted to identify influential factors on the efficiency of HB and NB. A general factorial model in the main effect order was used by design of experiment 7 software. Analysis of variance resulted in acceptable R 2 values of 99% and 98% and significance of the applied model. Quantum chemical calculations were carried out to find the optimum structure, molecular parameters, and local reactive sites in gas and solution phase. Calculations exhibited a planar structure for 1-hexyl-1H-benzo[d]imidazole and 2-nonyl-1H-benzo [d]imidazole that is the reason of their high efficiencies.

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Section: Introductionmentioning

confidence: 99%

Experimental and theoretical evaluation of two benzimidazole derivatives for steel corrosion protection in HCl

Zafari

Sarabi

Movassagh

2019

Asia-Pacific J Chem Eng

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“…The choice of a chemical compound as VCIs depends upon on its vapor pressure and efficiency to prevent corrosion by forming a protective film. The vapor pressure of VCI's must possess some optimum values (Kumar and Saini, 2012).…”

Section: Introductionmentioning

confidence: 99%

New concept of corrosion protection in the presence of water: V-active VCI. Concept and application

Genovez

Araujo²,

Pinto

et al. 2015

Anti-Corrosion Methods and Materials

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Purpose -This work describes test results that were obtained using a newly-developed type of organic inhibitor: V-active VCIs. The findings demonstrate that is possible to eliminate or reduce the oxidizing action of water, thereby extending the allowable time before painting after hydrojetting, and that the new corrosion inhibitor technology does not interfere with the final quality of paint adhesion. Design/methodology/approach -Metallic specimens were treated/washed by hydrojet (35000 Psi). It was employed as a 2 per cent V-active VCI SPH 1,712 water solution by dilution of the inhibitor in industrial water. Metal sample plates were examined after blasting and after subsequent drying, and were submitted to the paint adhesion tests, to evaluate the duration of temporary protection, oxidation prevention and influence on the adherence of paint (pull off). Findings -Using the V-active VCI proposed technology, it was possible to minimize or eliminate the oxidizing action of the water when the metal is exposed to the saline moisture in a closed environment, extending the acceptable time before painting without interference in the final quality of painting. Practical implications -The proposed technology allows to the area of prepared (wet blasted) steel surface to be increased during cleaning and preparation, thereby reducing labor and product costs, and reduces water consumption during the preparation process. Practical applications in the shipbuilding, ship maintenance and oil and gas production industries, include the preservation of internal tubes and pipes, protection during hydrostatic test processes and cleaning with water and corrosion prevention in diesel tanks contaminated with water. Originality/value -The intent of this paper is to present the obtained results for a new formulation of organic chemical inhibitors that use water medium as the application method. In addition to this property, this group of organic inhibitors maintains the property of volatile inhibitors. Thus, these compounds are generically known as V-active VCI.

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Oxidative degradation and associated complexation study of citric acid by di-tertiary butyl chromate

Thakur¹,

Ranjan²

2015

Asia. Jour. Rese. Chem.

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BIA, DPA, MBTA and DMA as Vapour Phase Corrosion Inhibitors for Mild Steel under Different Atmospheric Conditions

Cited by 3 publications

References 10 publications

Experimental and theoretical evaluation of two benzimidazole derivatives for steel corrosion protection in HCl

Experimental and theoretical evaluation of two benzimidazole derivatives for steel corrosion protection in HCl

New concept of corrosion protection in the presence of water: V-active VCI. Concept and application

Oxidative degradation and associated complexation study of citric acid by di-tertiary butyl chromate

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