Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 268, Issue -, Pages 425-437Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2018.07.087
Keywords
Surfactant; EIS; Weight loss; Synergistic effect; Acid inhibition
Funding
- National Science Fund for Young Scholars [51701234]
- China Postdoctoral Science Foundation [2018M632727]
- National Science Fund for Distinguished Young Scholars [51525903]
- AoShan Talents Outstanding Scientist Program by Qingdao National Laboratory for Marine Science and Technology [2017ASTCP-OS09]
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12-Sodium alkyl sulfate (SDS) was used as supporting frame for the adsorption of 4-mercaptopyridine (4MP) molecules, and the synergistic effect of 4MP and SDS (MP-SDS) was studied. Long time immersion tests showed that MP-SDS inhibitor film changed from monolayer to bilayer structure with time. Owning to the occurrence of the inhibitor bilayer, the corrosion inhibition loss induced by the de-adsorption of first inhibitor layer after long period of immersion was recuperated. MP-SDS shows good synergistic inhibition performance toward the corrosion of the steel in 0.5 M HCl solution. The relative synergistic mechanism was finally discussed. (C) 2018 Elsevier B.V. All rights reserved.
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