Acenaphtho [1,2-b] quinoxaline (AQ) was tested as a novel corrosion inhibitor for mild steel in 0.5 M H2SO4 solution using chemical technique at 30 °C. AQ acts as an effective inhibitor for mild steel in acidic medium. Inhibition efficiency increased with increasing concentration of AQ. Langmuir isotherm was found to provide an accurate description of the adsorption behaviour of the investigated compound. A zero-order kinetics relationship with respect to mild steel was obtained with and without AQ from the kinetic treatment of the data. DFT study gave further insight into the mechanism of inhibition action of AQ.

中文翻译：

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Acenaphtho [1,2-b] 喹喔啉在 0.5M H2SO4 中作为低碳钢的新型缓蚀剂

Acenaphtho [1,2-b] 喹喔啉 (AQ) 在 30 °C 下使用化学技术在 0.5 M H2SO4 溶液中作为低碳钢的新型缓蚀剂进行了测试。AQ 在酸性介质中可作为低碳钢的有效抑制剂。抑制效率随着 AQ 浓度的增加而增加。发现朗缪尔等温线可以准确描述所研究化合物的吸附行为。从数据的动力学处理中获得了关于有和没有 AQ 的低碳钢的零级动力学关系。DFT 研究进一步了解了 AQ 的抑制作用机制。