Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt.
Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia.
Sci Rep. 2022 Feb 10;12(1):2255. doi: 10.1038/s41598-022-06215-6.
A new type of Equisetum arvense aerial part (EAAP) extract was ready to be tested as a corrosion inhibitor for steel-based parts in Multi-stage flash (MSF) segments while the segments were being acid cleaned. The EAAP extract was identified using Fourier-transform infrared (FTIR) and High-performance liquid chromatography (HPLC). When compared to the specimen exposed to blank solution, EAAP extract molecules covered about 97% of the carbon steel surface in 2 M HCl solution, and the corrosion rate was reduced to 0.58 ± 0.02 μg cm h at 300 mg l. EAAP extract tends to have a blended impact on both anodic and cathodic sites on the surface of carbon steel. The thermodynamic activation factors are substantially higher in the presence of extract solution than in the absent of extract, demonstrating that the carbon steel surface would corrode slowly in the presence of EAAP extract. Theoretical models were used to validate the adsorption of EAAP extract on steel surfaces.
一种新型木贼地上部分（EAAP）提取物已准备好作为多效闪蒸（MSF）段中钢基部件的缓蚀剂进行测试，同时对部件进行酸洗。EAAP 提取物采用傅里叶变换红外（FTIR）和高效液相色谱（HPLC）进行鉴定。与暴露于空白溶液的样品相比，EAAP 提取物分子在 2M HCl 溶液中覆盖了约 97%的碳钢表面，腐蚀速率降低至 300mg·l 时的 0.58±0.02μg·cm·h。EAAP 提取物倾向于对碳钢表面的阳极和阴极位置产生混合影响。在存在提取物溶液的情况下，热力学激活因子比不存在提取物的情况下要高得多，这表明在 EAAP 提取物的存在下，碳钢表面的腐蚀会缓慢进行。理论模型用于验证 EAAP 提取物在钢表面的吸附。
