THE HOINT ADSORPTION / DESORPTION OF ORGANIC INHIBITOR AND Ⅰ-ANION ON IRON ELECTRODE IN SURFURIC ACID SOLUTION

J Chin Soc Corr Pro

1999, Vol. 19

Issue (1): 15-20 DOI:

Research Report

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THE HOINT ADSORPTION / DESORPTION OF ORGANIC INHIBITOR AND Ⅰ-ANION ON IRON ELECTRODE IN SURFURIC ACID SOLUTION

Dihua Wang;Xianzhang Bu;Jinyun Zou;

武汉大学环境科学系

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Abstract The adsorption and desorption behavior of three kinds of organic corrosion inhibitors {β-phenylamino-propiophenone(PAP),hexadecylpridinum bromide (HDPB),and cetyltrimethyl ammonium bromide (CTAB)} and /or Ⅰ- on iron electrode in 0.5mol·L-1H2SO4 solution was investigated by polarization curve measurements.The results showed that the adsorption stability of the organic inhibitors and/ or Ⅰ- was closely related to their anodic desorption behavior.The anodic desorption potential (Edes)of the joint adsorption layer was more stable.The dependence of Edes on the concentration of each constituent not only could provide an evidence for the joint adsorption mode but also could decide the competitive ability of the different species.Furthermore,The desorption rate and the desorption potential region of various sdsorption layers were discussed on the basis of the differential polarization curves.

Key words: inhibitor iron joint adsorption Anodic desorption

Received: 15 July 2005

Corresponding Authors: Dihua Wang

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Dihua Wang; Xianzhang Bu; Jinyun Zou. THE HOINT ADSORPTION / DESORPTION OF ORGANIC INHIBITOR AND Ⅰ-ANION ON IRON ELECTRODE IN SURFURIC ACID SOLUTION. J Chin Soc Corr Pro, 1999, 19(1): 15-20 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1999/V19/I1/15

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4宪章,汪的华,邹津耘,甘复兴.电化学,1997,3(1):55

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