Synthesis of Quinoline-based Acidizing Corrosion Inhibitor and its Corrosion Inhibition Performance for J55 Steel in HCl Medium

DONG Sanbao; LI Jinhua; FU Yueying; ZHANG Ye; GAO Fei; FEI Zhongming; HAN Weiwei

doi:10.12358/j.issn.1001-5620.2026.03.016

Volume 43 Issue 3

Jun. 2026

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DONG Sanbao, LI Jinhua, FU Yueying, et al.Synthesis of quinoline-based acidizing corrosion inhibitor and its corrosion inhibition performance for J55 steel in HCl medium[J]. Drilling Fluid & Completion Fluid，2026, 43（3）：418-426 doi: 10.12358/j.issn.1001-5620.2026.03.016

Citation:

DONG Sanbao, LI Jinhua, FU Yueying, et al.Synthesis of quinoline-based acidizing corrosion inhibitor and its corrosion inhibition performance for J55 steel in HCl medium[J]. Drilling Fluid & Completion Fluid，2026, 43（3）：418-426 doi: 10.12358/j.issn.1001-5620.2026.03.016

Citation:

DONG Sanbao, LI Jinhua, FU Yueying, et al.Synthesis of quinoline-based acidizing corrosion inhibitor and its corrosion inhibition performance for J55 steel in HCl medium[J]. Drilling Fluid & Completion Fluid，2026, 43（3）：418-426 doi: 10.12358/j.issn.1001-5620.2026.03.016

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Synthesis of Quinoline-based Acidizing Corrosion Inhibitor and its Corrosion Inhibition Performance for J55 Steel in HCl Medium

doi: 10.12358/j.issn.1001-5620.2026.03.016

DONG Sanbao^{1, 2
,},
LI Jinhua¹,
FU Yueying³,
ZHANG Ye⁴,
GAO Fei⁴,
FEI Zhongming⁴,
HAN Weiwei^{1, 2}

1.
School of Chemistry and Chemical Engineering, Xi’an Shiyou University, Shaanxi, Xi’an 710065
2.
Shaanxi University Engineering Research Center for Oil and Gas Field Chemistry (Xi’an Shiyou University), Shaanxi, Xi’an 710065
3.
Engineer Technology Research Institute, BHDC, Tianjin 300457
4.
NO.1 Cementing Company, BHDC, Renqiu, Hebei 062552

Received Date: 2026-03-15
Rev Recd Date: 2026-04-17

Available Online: 2026-06-12

Publish Date: 2026-06-12

Abstract

Abstract

Corrosion inhibitors are an essential component of acidizing working fluids, and the development of novel high-performance corrosion inhibitors has long been a key objective for researchers in acidizing operations. A novel alkynyl quinoline quaternary ammonium salt corrosion inhibitor (QAS) was synthesized via quaternization reaction. The optimal compounding ratio of QAS and 3-phenyl-2-propyn-1-ol (PPA) was determined through weight loss measurements. Subsequently, the corrosion inhibition performance and mechanism of QAS-PPA on J55 steel were investigated using electrochemical tests, scanning electron microscopy, adsorption thermodynamic analysis, and molecular dynamics simulations. The results showed that the optimal mass concentration of the binary composite corrosion inhibitor QAS-PPA was 0.5% with a mass ratio of m(QAS)∶m(PPA) = 1∶1. Under 20% HCl environment at 90 ℃ within 4 h, the corrosion inhibition efficiency of J55 steel coupons reached 99.71% at a total concentration of 0.5%. Electrochemical tests and scanning electron microscopy revealed that QAS-PPA acts as a mixed-type corrosion inhibitor with predominant anodic inhibition, and the protective layer formed on the J55 steel surface became denser with increasing inhibitor concentration, leading to improved inhibition performance. Adsorption behavior studies indicated that the adsorption of QAS on the J55 steel surface followed the Langmuir adsorption isotherm and was a spontaneous process, characteristic of a mixed-type inhibitor. Molecular dynamics simulations demonstrated that QAS and PPA exhibited synergistic adsorption on the Fe substrate surface, significantly enhancing the interaction energy between the mixed system and the substrate as well as the surface packing density.

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References

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