Corrosion inhibition of API5L X60 steel in sulfuric acid using gum arabic

IF 0.4 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Revue Roumaine De Chimie Pub Date : 2023-01-17 DOI:10.33224/rrch.2023.68.1-2.02

Nour-El-Houda SOBHI, Amel BOUKHOUIETE

引用次数: 0

Abstract

The aim of this research is the evaluation of inhibitory efficiency of Gum Arabic (GA) against the corrosion of API5L X60 pipeline steel in H2SO4 (0.5M) media, using mass loss measurement and electrochemical methods. The results show that inhibition efficiency increases with inhibitor concentration to attain 83% at 4 g/L of GA. Polarization curves reveal that GA acts as a mixed-type inhibitor in sulfuric acid. The adsorption of GA on pipeline API 5L X60 steel surface obeyed the Langmuir adsorption isotherm. Gibbs free energy of adsorption indicated that the adsorption process is spontaneous and the molecules adsorbed on the metal surface by the process of physical adsorption.

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阿拉伯胶对API5L X60钢在硫酸中的缓蚀作用

本研究的目的是评价阿拉伯树胶(GA)在H2SO4 (0.5M)介质中对API5L X60管线钢的腐蚀抑制效果，采用质量损失测量和电化学方法。结果表明，当GA浓度为4 g/L时，抑制率随抑制剂浓度的增加而增加，达到83%。极化曲线显示GA在硫酸中表现为混合型缓蚀剂。GA在管道API 5L X60钢表面的吸附符合Langmuir吸附等温线。吸附的吉布斯自由能表明吸附过程是自发的，分子通过物理吸附过程吸附在金属表面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revue Roumaine De Chimie 化学-化学综合

CiteScore

0.80

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Revue Roumaine de Chimie (Roumanian Journal of Chemistry) was founded in 1956 under the name Revue de Chimie. Acad. R. P. R. from 1964, the title was modified in Revue Roumaine de Chimie (preserving the numbering of the volumes started in 1956). In 1997, the English translation of the title – Roumanian Journal of Chemistry – was also included on each issue.