桉叶精油对低碳钢在1M HCl介质中腐蚀抑制作用的评价

IF 1 Q4 CHEMISTRY, MULTIDISCIPLINARY Ovidius University Annals of Chemistry Pub Date : 2023-01-01 DOI:10.2478/auoc-2023-0001
Malick Bathily, B. Ngom, Malick Mbengue, D. Gassama
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引用次数: 0

摘要

摘要:本研究旨在鉴定一种在塞内加尔达喀尔地区发现的球形桉(Eucalyptus globulus)芳香和药用植物。为此,我们首先提取了2020年10月收获的植物叶子中含有的精油。用Clevenger型萃取器加氢蒸馏得到精油,得率为干植物质量的1.70%。这个值与文献中不同的值相比是相当可观的。采用质量损失法对巨桉叶精油在1M盐酸介质中作为XC38型碳钢的绿色缓蚀剂进行了试验。结果表明,当挥发油浓度为1.6 g/L时,室温温度为298 K,最大抑菌率为89.03%。在298 ~ 338k的温度范围内研究了温度对挥发油抑制行为的影响。在此温度范围内,随着温度的升高,效率损失显著,在338 K时达到15.33%。然后确定热力学量。不同等温线曲线表明,精油的吸附符合Langmuir等温线。结果表明,该精油具有吸附的物理性质。
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Evaluation of the inhibitory action of essential oil from Eucalyptus globulus leaves on the corrosion of mild carbon steel in 1M HCl medium
Abstract The present work aims to valorize an aromatic and medicinal plant of Eucalyptus globulus found in the region of Dakar, Senegal. To do so, we first extracted the essential oil contained in the leaves of the plant harvested in October 2020. We obtained the essential oil by hydrodistillation using a Clevenger type extractor with a yield of 1.70% of the dry plant mass. This value is quite appreciable compared to the different values in the literature. The essential oil extracted from the leaves of Eucalyptus globulus was tested as a green inhibitor on carbon steel type XC38 in 1M HCl acid medium by the mass loss method. The results obtained led to a maximum inhibitory efficiency of 89.03% for a concentration of 1.6 g/L of essential oil at room temperature of 298 K. The effect of temperature on the inhibitory behavior of the essential oil was also studied over a range of 298 K to 338 K. In this temperature range, a loss of efficiency was observed with increasing temperature, reaching a value of 15.33% at 338 K. Thermodynamic quantities were then determined. The plot of the different isotherms showed that the adsorption of the essential oil obeys the Langmuir isotherm. The results obtained showed a physical character of adsorption of this essential oil.
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来源期刊
Ovidius University Annals of Chemistry
Ovidius University Annals of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
自引率
11.10%
发文量
20
审稿时长
5 weeks
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