Experimental and computational investigations on the synergistic inhibition mechanism of biphenyl quinoline quaternary ammonium and hexamethylenetetramine on the corrosion of J55 steel in 20 wt% HCl solution

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-17 DOI:10.1016/j.colsurfa.2024.135781

Weiwei Han , Hailan Tian , Li Xia , Jinsheng Zhao , Chenwei Liu , Sanbao Dong

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Abstract

The present study involves the synthesis of a novel biphenyl quinoline quaternary ammonium salt (BDQ) and its application in combination with hexamethylenetetramine (HMT) as a compounded corrosion inhibitor for acid stimulation, aiming to effectively prevent the corrosion of J55 steel in a 20 wt% HCl solution at 60 °C. The optimized BDQ/HMT mixture (with a mass ratio of 1:3) at 0.4 wt% produced a significant decrease in the corrosion rate of J55 steel to 3.7637 g/(m²·h), much lower than the requirement of 5.0 g/(m²·h) stipulated by the standard SY/T 5404–2019. The electrochemical analysis demonstrated that the BDQ/HMT mixture exhibited a mixed-type corrosion inhibitor with predominantly anodic characteristics, retarding both the anodic oxidation and cathodic reduction reactions of J55 steel in the HCl solution. The adsorption studies revealed that BDQ conformed to a Langmuir-type adsorption isotherm on J55 surfaces, driven by a combination of physisorption and chemical interactions, with chemical interactions playing a dominant role. Additionally, quantum chemical calculations and molecular dynamics simulation were also performed to elucidate the observed synergistic effect of BDQ and HMT.

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联苯喹啉季铵和六亚甲基四胺对 20 wt% HCl 溶液中 J55 钢腐蚀的协同抑制机理的实验和计算研究

本研究涉及一种新型联苯喹啉季铵盐（BDQ）的合成及其与六亚甲基四胺（HMT）组合作为酸刺激复合缓蚀剂的应用，旨在有效防止 J55 钢在 60 °C、20 wt% HCl 溶液中的腐蚀。优化后的 BDQ/HMT 混合物（质量比为 1:3）在 0.4 wt% 的条件下，J55 钢的腐蚀速率显著下降至 3.7637 g/（m2-h），远低于 SY/T 5404-2019 标准规定的 5.0 g/（m2-h）。电化学分析表明，BDQ/HMT 混合物是一种以阳极特性为主的混合型缓蚀剂，可同时抑制 J55 钢在盐酸溶液中的阳极氧化反应和阴极还原反应。吸附研究表明，BDQ 在 J55 表面上符合 Langmuir 型吸附等温线，由物理吸附和化学作用共同驱动，其中化学作用起主导作用。此外，还进行了量子化学计算和分子动力学模拟，以阐明观察到的 BDQ 和 HMT 的协同效应。

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

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.

Experimental and computational investigations on the synergistic inhibition mechanism of biphenyl quinoline quaternary ammonium and hexamethylenetetramine on the corrosion of J55 steel in 20 wt% HCl solution

Abstract

Experimental and computational investigations on the synergistic inhibition mechanism of biphenyl quinoline quaternary ammonium and hexamethylenetetramine on the corrosion of J55 steel in 20 wt% HCl solution