芒果(Mangnifera Indica)提取物在氢氧化钠介质中的锌缓蚀剂研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.4152/pea.2023410501

M. Omotioma, O. Onukwuli, C. O. Nevo

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引用次数: 1

摘要

本研究考察了MLE在NaOH介质中作为Zn缓蚀剂的作用。MLE进行定性和定量Pc分析。在缓蚀研究中采用了测温和重量技术。在测温法中，用锌在空白和抑制NaOH介质中溶解的反应数来测定MLE IE(%)。重量法采用单因素法和RSM法。在RSM中采用DES的CCD。实验结果表明，MLE主要由黄酮类化合物、生物碱和单宁组成(分别为471.7、458.3和115.0 mg/100 g)。抑制因子C越高，提取物的Zn -比值越高，抑制因子T越高，提取物的Zn -比值越低。二次元模型充分描述了IE(%)、C、T与时间因素的关系。当缓蚀剂浓度为1.0 g/L，温度为303 K，保温时间为5 h时，其IE(%)高达83.75%，表明MLE是一种适合于NaOH介质中Zn腐蚀的缓蚀剂。

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Investigation of Mango (Mangnifera Indica) Extract as Zinc Corrosion Inhibitor in a Sodium Hydroxide Medium

This work examined MLE as Zn corrosion inhibitor in a NaOH medium. MLE was subjected to qualitative and quantitative Pc analyses. Thermometric and gravimetric techniques were employed in the corrosion inhibition study. In the thermometric method, reaction numbers for Zn dissolution in blank and inhibited NaOH media were used to determine MLE IE(%). The gravimetric method was carried out using one factor at a time and RSM. CCD of DES was employed in RSM. The analyses of the experimental results revealed that MLE was predominantly made up of flavonoids, alkaloids and tannins (471.7, 458.3 and 115.0 mg/100 g, respectively). Zn  by the extract increased with higher inhibitor C, but decreased with a rise in T. A quadratic model adequately described the relationship between IE(%), C, T and time factors. High IE(%) of 83.75% was obtained at an inhibitor C of 1.0 g/L, T of 303 K and IT of 5 h. Hence, MLE is a suitable inhibitor for Zn corrosion in a NaOH medium.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.