Solomon Moses M
Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo, China.
Sci Rep. 2023 Aug 11;13(1):13085. doi: 10.1038/s41598-023-40354-8.
Sustainable development goal 12 advocates the production and consumption of green and sustainable commodities. As such, pressure is mounting on the oil and gas industries for a paradigm shift. This work explores the potential of aspartame (a derivative of aspartic acid and phenylalanine) based formulation as a green inhibitor. The inhibiting effect of aspartame alone and in combination with potassium iodide (KI) or sodium dodecyl sulphate (SDS) or both on T95 steel in 15 wt% HCl solution at 60-90 °C is investigated using weight loss, electrochemical, and surface analysis techniques. The results show severe metal corrosion especially at 90 °C with a corrosion rate (v) of 186.37 mm/y. Aspartame inhibits corrosion and its inhibition efficiency (η) increases with an increase in temperature. At 6.80 mM, η of 86% is obtained at 90 °C. The addition of SDS to aspartame produces an antagonistic effect. A KI-aspartame mixture produces an antagonistic effect at 60 °C and 70 °C but a synergistic effect at 80 °C and 90 °C. There is a strong synergy when aspartame (6.80 mM), KI (1 mM), and SDS (1 mM) are mixed especially at higher temperatures. The mixture reduces v from 186.37 to 14.35 mm/y, protecting the metal surface by 92% at 90 °C. The mixture can be considered an acidizing corrosion inhibitor.
可持续发展目标12倡导绿色和可持续商品的生产与消费。因此，石油和天然气行业面临着进行范式转变的越来越大的压力。这项工作探索了基于阿斯巴甜（天冬氨酸和苯丙氨酸的衍生物）的配方作为绿色缓蚀剂的潜力。使用失重法、电化学法和表面分析技术，研究了阿斯巴甜单独以及与碘化钾（KI）或十二烷基硫酸钠（SDS）或两者组合在60 - 90°C的15 wt% HCl溶液中对T95钢的缓蚀作用。结果表明存在严重的金属腐蚀，尤其是在90°C时，腐蚀速率（v）为186.37 mm/y。阿斯巴甜能抑制腐蚀，其缓蚀效率（η）随温度升高而增加。在6.80 mM时，90°C下的η为86%。向阿斯巴甜中添加SDS会产生拮抗作用。KI - 阿斯巴甜混合物在60°C和70°C时产生拮抗作用，但在80°C和90°C时产生协同作用。当阿斯巴甜（6.80 mM）、KI（1 mM）和SDS（1 mM）混合时，尤其是在较高温度下，会有很强的协同作用。该混合物将v从186.37降低到14.35 mm/y，在90°C时对金属表面的保护率达到92%。该混合物可被视为一种酸化缓蚀剂。
