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| STUDY ON CORROSION AND INHIBITION MECHANISM IN H2S AQUEOUS SOLUTIONSⅷ.The adsorption behavior of imidazoline derivates on the mild steel electrodes in H2S solutions |
| Huaiyu Yang;Jiajian Chen;Chunan Cao;Dianzhen Cao |
| 中科院金属所金属腐蚀与防护国家重点实验室 |
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Abstract The adsorption behaviors of some imidazoline deriva tes on the surface of mild steel electrodes was investigated based on the result s of electrochemical test in H2S solutions,a maybe adsorption model was sugges ted as well.Results show that all of 13 kinds imidazoline derivates follow Langm uir isotherm and the interaction between the inhibitor molecule and the surface of electrodes is a strong chemical action with a high Gibbs adsorption free ener gy,which is primarily from the bonding between the unsaturated five-membered nit rogen ring lying planar and the surface of metal.The of five-membered ring in im idazoline derivate molecule interacts as approximate parallel the metals surface .The number of skeleton atoms in hydrophilic chain plays an important role in ad sorption to the metal surface,as well as the changes of hydrophobic chain has a less contribution to the molecular adsorption.
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Received: 08 August 2001
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Corresponding Authors:
Huaiyu Yang
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Cite this article:
Huaiyu Yang; Jiajian Chen; Chunan Cao; Dianzhen Cao. STUDY ON CORROSION AND INHIBITION MECHANISM IN H2S AQUEOUS SOLUTIONSⅷ.The adsorption behavior of imidazoline derivates on the mild steel electrodes in H2S solutions. J Chin Soc Corr Pro, 2003, 23(2): 75-78 .
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2003/V23/I2/75
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