In this work, the corrosion inhibiting properties of date palm seed extract (DSE) for carbon steel in 0.5M hydrochloric acid (HCl) solution has been investigated using several techniques, including weightloss measurement, potentiodynamic polarisation (PDP), and electrochemical impedance spectroscopy(EIS). By adding the DSE concentrations in 0.5M HCI solution from 800 ppm to 2000 ppm, theinhibition efficiency (IE%) was improved with DSE concentration up to 1400 ppm. Highest IE% of 94in weight loss, 92 in PDP, and 97 in EIS were all attained at an optimum DSE concentration of 1400ppm. Further increasing the DSE concentration to 2000 ppm, IE% was shown to be decreased. Moreover,the PDP measurement indicated that DSE is a mixed-type inhibitor, affecting both cathodic and anodicpartial reactions. From the Gas Chromatography and Mass Spectrometry (GC-MS) analysis, it wasrevealed that DSE is mainly composed of (wt.%) 36.0 lauric acid, 12.0 caprylic acid, and 10.7 myristicacid. This study revealed that DSE has it could serve as a green corrosion inhibitor for carbon steel inHCl medium..
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机译：在这项工作中，研究了使用几种技术研究了0.5M盐酸（HCl）溶液中碳钢的腐蚀抑制性能（DSE）碳钢（HCl）溶液，包括重量测量，电位偏振（PDP）和电化学阻抗光谱（ EIS）。通过将0.5M HCl溶液中的DSE浓度从800ppm添加到2000ppm，通过低至1400ppm的DSE浓度改善了抑制效率（即％）。在最佳DSE浓度为1400ppm的最佳DSE浓度下，最高IE IE IE IE IE of 94重量损失，92例，97例，最佳DSE浓度为1400ppm。进一步将DSE浓度增加到2000ppm，即％显示降低。此外，PDP测量表明DSE是混合型抑制剂，影响阴极和阳性分子反应。从气相色谱和质谱（GC-MS）分析，它是由于DSE主要由（WT.％）36.0月桂酸，12.0粒酸和10.7毫肌酸组成。本研究表明，DSE有它可以作为碳钢inhcl培养基的绿色腐蚀抑制剂。
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