Chen Yumeng, An Yiming, Ma Jing, Zhang Zhihua, Qiao Fulin, Lei Xue, Sun Fei, Wang Chunlu, Gao Song, Zhao Yue, Wang Jinhua, Fu Xiaoping, Wang Hui, Yu Zhengqi
Sinopec Research Institute of Petroleum Processing Co., Ltd. Beijing 100083 P. R. China
RSC Adv. 2023 Mar 14;13(12):8317-8326. doi: 10.1039/d2ra08062a. eCollection 2023 Mar 8.
Four novel corrosion inhibitors (1, 2, 3 and 4) integrating different tetraphenylethylene (TPE) cations and thiocyanate (SCN) anions were developed. Weight-loss and electrochemical measurements were employed to assess their protective properties toward carbon steel in 0.5 M HSO, revealing them as effective corrosion inhibitors in the order of 3 > 4 > 2 > 1, with the inhibition efficiencies of 2, 3 and 4 all exceeding 97%. The inhibitory effect could be attributed to hard and soft acids and bases theory and the synergistic effect of the charged ingredients. The efficiency trend of the corrosion inhibition, as well as inhibition mechanism, was verified by multi-scaled theoretical simulations combined with grand canonical Monte Carlo and molecular dynamic methods.
开发了四种新型缓蚀剂（1、2、3和4），它们整合了不同的四苯乙烯（TPE）阳离子和硫氰酸根（SCN）阴离子。采用失重法和电化学测量方法评估了它们在0.5 M HSO中对碳钢的保护性能，结果表明它们是有效的缓蚀剂，其顺序为3>4>2>1，其中2、3和4的缓蚀效率均超过97%。抑制作用可归因于软硬酸碱理论和带电成分的协同效应。通过结合巨正则蒙特卡罗和分子动力学方法的多尺度理论模拟验证了缓蚀效率趋势以及缓蚀机理。
