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51318-11029-Research and Evaluation of New Imidazoline Corrosion Inhibitor

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Imidazoline derivatives have anti-corrosive effects on metals such as carbon steel and are widely used in acid-corroded pipelines for conveying oil and natural gas. In this paper, a novel imidazoline inhibitor was designed and synthesized.

Product Number: 51318-11029-SG
Author: Xiong Zhao / Haobo Yu / Changfeng Chen / Qingzuo Chen
Publication Date: 2018
Industry: Oil and Gas Production
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$20.00
$20.00

Imidazoline derivatives have anti-corrosive effects on metals such as carbon steel and are widely used in acid-corroded pipelines for conveying oil and natural gas. In this paper, a novel imidazoline inhibitor was designed and synthesized. The corrosion inhibitor has excellent corrosion inhibition effect on in the environment of H2S / CO2. When the dosage is only 50mg / L, the corrosion inhibition efficiency can reach 94 %. SEM observation shows that fewer pits and corrosion product were found on the sample surface after adding the corrosion inhibitor. The adsorption performance of imidazoline derivatives on Fe (001) surface was calculated by molecular dynamics simulation. The molecular dynamics simulation showed that imidazoline derivatives had bigger adsorption on water than Fe (001), so that the corrosion inhibitor will first be adsorbed on the iron surface to play a role in the inhibition of corrosion, the frontier orbital adsorption sites of the corrosion inhibitor molecules are distributed around the phenyl group, thereby forming a more stable adsorption film on the metal surface.

 

Keywords: imidazoline the corrosion inhibition efficiency

Imidazoline derivatives have anti-corrosive effects on metals such as carbon steel and are widely used in acid-corroded pipelines for conveying oil and natural gas. In this paper, a novel imidazoline inhibitor was designed and synthesized. The corrosion inhibitor has excellent corrosion inhibition effect on in the environment of H2S / CO2. When the dosage is only 50mg / L, the corrosion inhibition efficiency can reach 94 %. SEM observation shows that fewer pits and corrosion product were found on the sample surface after adding the corrosion inhibitor. The adsorption performance of imidazoline derivatives on Fe (001) surface was calculated by molecular dynamics simulation. The molecular dynamics simulation showed that imidazoline derivatives had bigger adsorption on water than Fe (001), so that the corrosion inhibitor will first be adsorbed on the iron surface to play a role in the inhibition of corrosion, the frontier orbital adsorption sites of the corrosion inhibitor molecules are distributed around the phenyl group, thereby forming a more stable adsorption film on the metal surface.

 

Keywords: imidazoline the corrosion inhibition efficiency

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