Corrosion Inhibition of X100 Pipeline Steel in 1 M HCl by Two Complexes of Cystine

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2024-05-27 DOI:10.1007/s12678-024-00872-z

Xiaolu Sun, Pandong Zhang, Liang He, Xinran Liu, Ping Li

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Abstract

Corrosion has been identified as the primary mechanism causing pipeline failures, leading to significant economic losses and environmental problems. One of the effective and economical methods to prevent metal corrosion is to add corrosion inhibitors. Although environmentally friendly corrosion inhibitors are beneficial to the ecological environment, their lower corrosion inhibition efficiency compared to traditional corrosion inhibitors has limited their application. Therefore, this paper aims to develop an environmentally friendly compound corrosion inhibitor that can meet the practical industrial requirements. The corrosion inhibition effect of two complexes of cystine, namely cystine + sodium molybdate (Cys-Cys + MS) and cystine + zinc gluconate (Cys-Cys + ZG), on pipeline steel in 1 M HCl was investigated. And the synergistic corrosion inhibition mechanism of these two composite corrosion inhibitors was discussed. The results indicated that the corrosion inhibition performance of Cys-Cys + MS and Cys-Cys + ZG complexes was significantly better than that single inhibitors at higher concentration. Furthermore, it was observed that the corrosion inhibition performance of Cys-Cys + ZG was superior to that of Cys-Cys + MS. The maximum corrosion inhibition efficiency of the two compound corrosion inhibitors was achieved at the concentration of (2 + 4) mM.

Graphical Abstract

Abstract Image

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两种胱氨酸络合物在 1 M HCl 中对 X100 管道钢的缓蚀作用

腐蚀已被确定为造成管道故障的主要机制，从而导致重大经济损失和环境问题。防止金属腐蚀的有效而经济的方法之一是添加缓蚀剂。虽然环保型缓蚀剂有利于生态环境，但与传统缓蚀剂相比，其缓蚀效率较低，限制了其应用。因此，本文旨在开发一种能满足实际工业要求的环保型复合缓蚀剂。研究了胱氨酸的两种复合物，即胱氨酸 + 钼酸钠（Cys-Cys + MS）和胱氨酸 + 葡萄糖酸锌（Cys-Cys + ZG）在 1 M HCl 中对管线钢的缓蚀效果。并讨论了这两种复合缓蚀剂的协同缓蚀机理。结果表明，在较高浓度下，Cys-Cys + MS 和 Cys-Cys + ZG 复合物的缓蚀性能明显优于单一缓蚀剂。此外，还观察到 Cys-Cys + ZG 的缓蚀性能优于 Cys-Cys + MS。两种复合缓蚀剂的最大缓蚀效率在浓度为 (2 + 4) mM 时达到。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

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