不同浓度盐酸环境中 3,4,5-三羟基-n-(3,4-二甲氧基苯亚甲基)苯甲酰肼席夫碱对铝的缓蚀和吸附特性

Ankit Sharma, S. K. Arora, Manoj Kumar Batra, Rakhi Khandelwal
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引用次数: 0

摘要

在本文中,我们介绍了通过微波诱导辐照合成希夫碱的典型方法,即由 3,4,5-三羟基苯甲酰肼和 3,4-二甲氧基苯甲醛缩合而成。合成化合物的表征是在元素分析、光谱研究(傅立叶变换红外光谱、1HNMR、质谱)和扫描电子显微镜(SEM)表面形貌的基础上完成的。通过 X 射线衍射 (XRD) 确定了合成化合物的结构组成。利用失重技术研究了希夫碱 3,4,5-三羟基-N-(3,4-二甲氧基苯亚甲基)苯并酰肼对铝在 0.5N HCl、1NHCl 和 2N HCl 中腐蚀的抑制特性,电化学研究揭示了腐蚀抑制的机理方面,如电位极化测量表明抑制剂的性质是混合型的,阻抗研究支持抑制剂在金属表面形成保护层。抑制剂分子在铝表面的吸附与 Langmuir 等温线一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Corrosion inhibition and Adsorption characteristics of 3,4,5-trihydroxy-n-(3,4-dimethoxy benzylidene) benzo hydrazide schiff base on aluminium in different concentration of Hydrochloric acid environment
In the present paper we are presenting our studies on the synthesis of Schiff bases typically formed by condensation of 3,4,5-trihydroxy benzohydrazide and 3,4-dimethoxy benzaldehyde by microwave induced irradiation, reaction showed enhanced yield and less time, easier workup. The characterization of synthesized compound has been done on the basis of elemental analysis, spectral studies (FTIR,1HNMR, Mass) and surface morphology by Scanning Electron Microscopic (SEM). The structural composition of synthesized compound has been determined by X-Ray diffraction (XRD). The inhibition property of Schiff base 3,4,5-trihydroxy –N-(3,4dimethoxy benzylidene) benzo hydrazide on the corrosion of aluminum in 0.5N HCl,1NHCl, 2N HCl were studied using weight loss technique and electrochemical studies revealed mechanistic aspects of corrosion inhibition like potentiodynamic polarization measurements indicated the nature of inhibitor is a mixed type and impedance studies supported the formation of a protective layer of inhibitor on a metal surface. Adsorption of the inhibition molecule on aluminium surface was consistent with the Langmuir isotherm.
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