Naoual El-Aouni, Omar Dagdag, Abdeslam El Amri, Nadia Dkhireche, Hansang Kim, Elyor Berdimurodov, Abderrahim El Bachiri, Avni Berisha, Mohamed Rafik, Khasan Berdimuradov
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Epoxy resin is widely recognized as a superior protective agent due to its distinct electron donor and acceptor sites. The properties of phosphoric ester hexaglycidyl para-amino phenol resin (HGPAPEP) were carefully studied to determine its potential as a protective agent. At 298 K, Carbon steel was immersed in 1.0 M of hydrochloric acid at 298 K. Surface inspection was carried out using electrochemical techniques and scanning electron microscopy/energy dispersive spectroscopy. The data show that HGPAPEP has remarkable corrosion-inhibiting characteristics in hydrochloric acid. Potentiodynamic polarization and electrochemical impedance spectroscopy revealed an excellent 95.90% efficiency at 10<sup>–3</sup> M. Isothermal adsorption experiments established that our protective compound follows the Langmuir adsorption model. The Gibbs adsorption free energy (Δ<i>G</i><sub>ads</sub>) value of −44.24 kJ/mol suggests that the protective agent molecules form a chemical bond with the electrode surface, resulting in excellent corrosion protection. 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引用次数: 0
摘要
这项新研究的重点是通过合成含有 C = C、C-N、C-C 和 P = O 等键的双层芳香基基体,制造新型六官能环氧树脂。第一步是获得环氧基质的前体分子,然后用环氧氯丙烷对其进行官能化。利用傅立叶变换红外光谱和核磁共振光谱对树脂进行了细致的表征,从而揭示了其微观结构。同时,还对粘度参数进行了分析,以便更好地了解树脂的流动特性。环氧树脂因其独特的电子供体和受体位点而被公认为一种优良的保护剂。我们仔细研究了磷酸酯六缩水甘油对氨基苯酚树脂(HGPAPEP)的特性,以确定其作为保护剂的潜力。在 298 K 的温度下,将碳钢浸入 1.0 M 的盐酸中,使用电化学技术和扫描电子显微镜/能量色散光谱进行表面检测。数据表明,HGPAPEP 在盐酸中具有显著的缓蚀特性。等温吸附实验表明,我们的保护性化合物遵循 Langmuir 吸附模型。吉布斯吸附自由能(ΔGads)值为 -44.24 kJ/mol,表明保护剂分子与电极表面形成了化学键,从而产生了良好的腐蚀保护效果。理论研究加强了这一表面分析,验证了我们的实验结果。
Investigation of a novel hexafunctional epoxy resin as an anti-corrosion agent for carbon steel in an HCl environment
This new investigation focused on the creation of a novel hexafunctional epoxy resin by synthesizing a two-tier aromatic radical matrix containing bonds such as C = C, C–N, C–C, and P = O. The initial step involved obtaining the precursor molecule for the epoxy matrix, which was subsequently functionalized with epichlorohydrin. The resin was meticulously characterized using Fourier transform infrared and nuclear magnetic resonance spectroscopy, which revealed its structure at a microscopic level. Concurrently, the viscosity parameters were analyzed to have a better understanding of the resin's flow properties. Epoxy resin is widely recognized as a superior protective agent due to its distinct electron donor and acceptor sites. The properties of phosphoric ester hexaglycidyl para-amino phenol resin (HGPAPEP) were carefully studied to determine its potential as a protective agent. At 298 K, Carbon steel was immersed in 1.0 M of hydrochloric acid at 298 K. Surface inspection was carried out using electrochemical techniques and scanning electron microscopy/energy dispersive spectroscopy. The data show that HGPAPEP has remarkable corrosion-inhibiting characteristics in hydrochloric acid. Potentiodynamic polarization and electrochemical impedance spectroscopy revealed an excellent 95.90% efficiency at 10–3 M. Isothermal adsorption experiments established that our protective compound follows the Langmuir adsorption model. The Gibbs adsorption free energy (ΔGads) value of −44.24 kJ/mol suggests that the protective agent molecules form a chemical bond with the electrode surface, resulting in excellent corrosion protection. A theoretical study reinforced this surface analysis, verifying our experimental results.
Chemical PapersChemical Engineering-General Chemical Engineering
CiteScore
3.30
自引率
4.50%
发文量
590
期刊介绍:
Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.