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Peer-reviewedCC BY 4.0Molecules

The Corrosion Inhibition Performance and Synergistic Adsorption Mechanism of a Novel Quinoline-Based Inhibitor for J55 Steel in HCl Solution

  • Sanbao Dong1,2
  • Jinhua Li1
  • Haiwen Hu3
  • Jiakui Chen1
  • Yanmei Hou1
  • Weiwei Han1,2
  1. 1College of Chemistry and Chemical Engineering, Xi’an Petroleum University, No.18, East Dianzi 2nd Road, Xi’an 710065, China
  2. 2Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi’an Petroleum University, Xi’an 710065, China
  3. 3Institute of Carbon Neutrality Future Technology, Xi’an Petroleum University, Xi’an 710065, China
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Abstract

Novel and high-efficiency corrosion inhibitors are indispensable in acidizing stimulation, which is a key operation to increase oil production. In this study, a novel corrosion inhibitor, alkynyl bisquinolinium quaternary ammonium salt (ABQ) containing both a quinoline ring and alkynyl groups, was first developed through a quaternization reaction using quinoline and 1,4-dichlorobutyne. ABQ was then compounded with 3-phenyl-2-propyn-1-ol (PPA). ABQ-PPA’s corrosion inhibition performance and mechanism for J55 steel in a hydrochloric acid medium were systematically investigated through static weight-loss tests, electrochemical measurements, SEM characterization, thermodynamic adsorption analysis, and molecular dynamics (MD) simulations. The results indicated that the 0.5% ABQ-PPA mixture (0.45% ABQ and 0.05% PPA, mass ratio 4.5: 0.5) produced superior inhibition properties (up to 99.89%). Electrochemical measurements demonstrated that the ABQ-PPA complex could simultaneously suppress both anodic and cathodic reactions, acting as a mixed-type inhibitor with predominant anodic inhibition. Adsorption isotherm analysis revealed that ABQ-PPA’s adsorption onto the J55 steel surface followed the Langmuir monolayer adsorption model, with a mixed adsorption mode involving both physisorption and chemisorption. Molecular dynamics simulations further revealed that ABQ-PPA molecules formed a compact and orderly mixed adsorption layer on the Fe surface, displacing interfacial water molecules and blocking corrosion attack from corrosive media.

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Cite

BibTeXRIS
BibTeX
@article{dong2026corrosion,
  title = {{The Corrosion Inhibition Performance and Synergistic Adsorption Mechanism of a Novel Quinoline-Based Inhibitor for J55 Steel in HCl Solution}},
  author = {Sanbao Dong and Jinhua Li and Haiwen Hu and Jiakui Chen and Yanmei Hou and Weiwei Han},
  journal = {Molecules},
  year = {2026},
  month = oct,
  doi = {10.3390/molecules31213881},
  url = {https://www.mdpi.com/1420-3049/31/21/3881},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - The Corrosion Inhibition Performance and Synergistic Adsorption Mechanism of a Novel Quinoline-Based Inhibitor for J55 Steel in HCl Solution
AU  - Sanbao Dong
AU  - Jinhua Li
AU  - Haiwen Hu
AU  - Jiakui Chen
AU  - Yanmei Hou
AU  - Weiwei Han
PY  - 2026
DA  - 2026/10/27
JO  - Molecules
DO  - 10.3390/molecules31213881
UR  - https://www.mdpi.com/1420-3049/31/21/3881
AB  - Novel and high-efficiency corrosion inhibitors are indispensable in acidizing stimulation, which is a key operation to increase oil production. In this study, a novel corrosion inhibitor, alkynyl bisquinolinium quaternary ammonium salt (ABQ) containing both a quinoline ring and alkynyl groups, was first developed through a quaternization reaction using quinoline and 1,4-dichlorobutyne. ABQ was then compounded with 3-phenyl-2-propyn-1-ol (PPA). ABQ-PPA’s corrosion inhibition performance and mechanism for J55 steel in a hydrochloric acid medium were systematically investigated through static weight-loss tests, electrochemical measurements, SEM characterization, thermodynamic adsorption analysis, and molecular dynamics (MD) simulations. The results indicated that the 0.5% ABQ-PPA mixture (0.45% ABQ and 0.05% PPA, mass ratio 4.5: 0.5) produced superior inhibition properties (up to 99.89%). Electrochemical measurements demonstrated that the ABQ-PPA complex could simultaneously suppress both anodic and cathodic reactions, acting as a mixed-type inhibitor with predominant anodic inhibition. Adsorption isotherm analysis revealed that ABQ-PPA’s adsorption onto the J55 steel surface followed the Langmuir monolayer adsorption model, with a mixed adsorption mode involving both physisorption and chemisorption. Molecular dynamics simulations further revealed that ABQ-PPA molecules formed a compact and orderly mixed adsorption layer on the Fe surface, displacing interfacial water molecules and blocking corrosion attack from corrosive media.
SN  - 1420-3049
ER  -