Eco-friendly green inhibitor for corrosion protection of API 5L X60 carbon steel in sulfuric acid solution

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-04-29 DOI:10.1016/j.jtice.2025.106161

Sobhi Nour El Houda , Boukhouiete Amel

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引用次数: 0

Abstract

Background

Corrosion is a widespread issue affecting metals and alloys across various industries. The use of corrosion inhibitors remains one of the most effective protection methods. Due to growing environmental and health concerns, the focus has shifted toward eco-friendly alternatives.Olibanum has emerged as a promising green corrosion inhibitor with potential applications in industrial environments.

Methods

Temperature effect, Inhibition efficiency, corrosion behaviour and corrosion mechanism of the inhibitors on carbon steel are evaluated using gravimetry and electrochemical techniques (potentiodynamic polarization curves (PDP), electrochemical impedance spectroscopy (EIS), and open circuit potential). Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) examined the surface morphology. Furthermore, Infrared Spectroscopy (IR) is employed to characterize the inhibitor.

Significant findings

The results show that this natural substance is a mixed-type inhibitor with anodic behavior dominating, with a maximum efficiency of 85% obtained at a concentration of 4 g/L. The inhibition efficiency of Olibanum increased with inhibitor concentration and temperature. The dynamic behavior of Olibanum shows that its adsorption isotherm on steel follows the Temkin type with both physicochemical adsorption processes. The low Ea, moderate ∆Hact, and ∆S act values provide that the adsorption appears to be predominantly physical, but there may also be some chemical adsorption. SEM micrographs confirm the presence of a protective layer on the steel surface.

Abstract Image

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环保型绿色缓蚀剂，用于API 5L X60碳钢在硫酸溶液中的防腐

腐蚀是影响各行业金属和合金的普遍问题。使用缓蚀剂仍然是最有效的保护方法之一。由于日益增长的环境和健康问题，人们的关注点已经转向环保替代品。Olibanum已成为一种有前景的绿色缓蚀剂，在工业环境中具有潜在的应用前景。方法采用重量法和电化学技术（动电位极化曲线（PDP）、电化学阻抗谱（EIS）和开路电位）评价缓蚀剂对碳钢的温度效应、缓蚀效率、腐蚀行为和腐蚀机理。扫描电子显微镜（SEM）和能量色散x射线光谱（EDS）检查了表面形貌。此外，利用红外光谱（IR）对抑制剂进行了表征。结果表明，该天然物质是一种以阳极行为为主的混合型缓蚀剂，在浓度为4 g/L时，效率最高可达85%。缓蚀效果随缓蚀剂浓度和温度的增加而增加。Olibanum的动力学行为表明，其在钢上的吸附等温线符合Temkin型，同时具有物理化学吸附过程。较低的Ea值、中等的∆Hact值和∆S act值表明，吸附似乎主要是物理吸附，但也可能有一些化学吸附。扫描电镜证实了钢表面存在一层保护层。

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

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.