Experimental study of inhibition of corrosion of mild steel in 1 M HCl solution by two newly synthesized calixarene derivatives

被引：9

作者：

Kaddouri, M. ^{[1
]}

Rekkab, S. ^{[2
]}

Bouklah, M. ^{[1
]}

Hammouti, B. ^{[1
]}

Aouniti, A. ^{[1
]}

Kabouche, Z. ^{[1
]}

机构：

[1] Univ Mohammed Premier, LCAE URAC18, Fac Sci, Oujda, Morocco

[2] Univ Mentouri Constantine, Lab Obtent Subst Therapeut, Constantine 25000, Algeria

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2013年 / 39卷 / 08期

关键词：

Calixarene; Steel; Corrosion; Inhibition; Thermodynamic data; THERMODYNAMIC CHARACTERIZATION; ADSORPTION PROCESSES; METAL DISSOLUTION; ARMCO IRON; ACID;

D O I：

10.1007/s11164-012-0869-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Inhibition of the corrosion of mild steel in molar hydrochloric acid by two calixarenes, including the effect of inhibitor concentration and temperature, has been investigated by use of weight loss and electrochemical measurements (polarisation and impedance). The results obtained showed that the rate of corrosion decreased substantially in the presence of the compounds, with maximum inhibition of 98.2 % by one of the compounds at a concentration of 10(-3) M. The effect of temperature on corrosion behaviour in the presence of different concentrations of the two new calixarenes was studied in the range 45-75 A degrees C. The efficiency of inhibition by the compounds increased with increasing inhibitor concentration and was independent of temperature. Polarisation curves revealed that the calixarenes are mixed-type inhibitors. Adsorption of the inhibitors by the carbon steel surface obeyed the Langmuir adsorption isotherm. Some thermodynamic data for the dissolution and adsorption processes were also determined.

引用

页码：3649 / 3667

页数：19

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