<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>To alleviate the metal corrosion problem caused by incomplete acid discharge during pickling or acidification, a corrosion inhibitor, long chain fatty hydrazides (LCFH), with a significant corrosion inhibition effect was synthesized from natural grease. The corrosion inhibition and adsorption properties of LCFH on carbon steel in 1 M HCl solution were studied by static sample weight loss test, electrochemical impedance spectroscopy, and potentiodynamic polarization curve. The results showed that LCFH exhibits excellent corrosion inhibition performance in HCl solution. The inhibition efficiency increases with the increase of inhibitor concentration. When the concentration of LCFH is 40 mg/L, the inhibition efficiency can reach 97.9%. The potentiodynamic polarization curve shows that LCFH is a corrosion inhibitor that mainly inhibits the cathodic reaction. The corrosion inhibitor is spontaneously adsorbed on the surface of low-carbon steel in physical form, which conforms to the Langmuir isothermal adsorption model.</p>
</abstract>

To alleviate the metal corrosion problem caused by incomplete acid discharge during pickling or acidification, a corrosion inhibitor, long chain fatty hydrazides (LCFH), with a significant corrosion inhibition effect was synthesized from natural grease. The corrosion inhibition and adsorption properties of LCFH on carbon steel in 1 M HCl solution were studied by static sample weight loss test, electrochemical impedance spectroscopy, and potentiodynamic polarization curve. The results showed that LCFH exhibits excellent corrosion inhibition performance in HCl solution. The inhibition efficiency increases with the increase of inhibitor concentration. When the concentration of LCFH is 40 mg/L, the inhibition efficiency can reach 97.9%. The potentiodynamic polarization curve shows that LCFH is a corrosion inhibitor that mainly inhibits the cathodic reaction. The corrosion inhibitor is spontaneously adsorbed on the surface of low-carbon steel in physical form, which conforms to the Langmuir isothermal adsorption model.

Preparation of efficient hydrochloric acid corrosion inhibitor from natural grease

Engineering Research Center of Oil and Gas Field Chemistry

Universities of Shaanxi Provence, Xi’an Shiyou University

Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution 4.0 International License.

To alleviate the metal corrosion problem caused by incomplete acid discharge during pickling or acidification, a corrosion inhibitor, long chain fatty...

Preparation of efficient hydrochloric acid corrosion inhibitor from natural grease

Publié en ligne: 12 juil. 2024

Pages: 77 - 85

DOI: https://doi.org/10.2478/pjct-2024-0021

Mots clés
Acidic corrosion, Long chain fatty hydrazides, Corrosion inhibitor, Natural grease

© 2024 Yi Luo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Preparation of efficient hydrochloric acid corrosion inhibitor from natural grease

Publié en ligne: 12 juil. 2024

Pages: 77 - 85

DOI: https://doi.org/10.2478/pjct-2024-0021

Mots clésAcidic corrosion, Long chain fatty hydrazides, Corrosion inhibitor, Natural grease

© 2024 Yi Luo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
Acidic corrosion, Long chain fatty hydrazides, Corrosion inhibitor, Natural grease