STUDY ON INTRAMOLECULAR SYNERGISTIC INHIBITIVE EFFECTS OF BENZOTRIAZOLY MOIETY AND INIDAZOLY MOIETY

J Chin Soc Corr Pro

1999, Vol. 19

Issue (5): 280-284 DOI:

Research Report

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STUDY ON INTRAMOLECULAR SYNERGISTIC INHIBITIVE EFFECTS OF BENZOTRIAZOLY MOIETY AND INIDAZOLY MOIETY

Daquan Zhang;;

上海电力学院;国家电力公司热力设备腐蚀与防护重点实验室

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Abstract 1-[(1'-imidazolly)-methy] benzotriazole(IMBTA) was synthesized by Mannich reaction.Its inhibition effects for copper corrosion in 3% NaCl solution was investigated by weight-loss measurement,electrochemical polarization curves and electrochemical impedance spectra.IMBTA(0.001mol/L)exhibited better protection compared with the mixture of 0.001mol/L benzotriazole (BTA)and 0.001mol/ L inidazole (IM)under the same experimental conditions.Polarization studies showed that IMBTS supressed both cathodic and anodic corrosion reactions.The synergistic effect of BTA moiety and IM moiety in IMBTA molecule was observed.The electron transfer from IM moiety to BTA moiety was conductive to the adsorption of BTA moiety on copper surface.This resulted in improvement of the protective ability of IMBTA for copper in 3% NaCl solution

Key words: benzotriazole imidazole intramolecular synergistic effect polarization curve electrochemical impedan

Received: 28 October 1998

Corresponding Authors: Daquan Zhang E-mail: zhdq@public9.sta.net.cn

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Daquan Zhang. STUDY ON INTRAMOLECULAR SYNERGISTIC INHIBITIVE EFFECTS OF BENZOTRIAZOLY MOIETY AND INIDAZOLY MOIETY. J Chin Soc Corr Pro, 1999, 19(5): 280-284 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1999/V19/I5/280

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