CO2/H2S腐蚀体系中咪唑啉季铵盐与3种阳离子表面活性剂间的缓蚀协同效应

张晨, 陆原, 赵景茂

Synergistic Inhibition Effect of Imidazoline Ammonium Salt and Three Cationic Surfactants in H2S/CO2 Brine Solution

ZHANG Chen, LU Yuan, ZHAO Jingmao

表2 通过拟合Q235钢在含有不同缓蚀剂的CO2/H2S共存盐水溶液中测得的极化曲线得到的电化学参数

Table 2 Electrochemical parameters fitted from the polarization curves of Q235 steel in CO2/H2S coexistent brine solutions containing different inhibitors

Inhibiton βa / mV·dec-1 βc / mV·dec-1 Ecorrvs SCE / mV Icorr / μA·cm-2 ηp / % Blank 56.6 -198.4 -746.5 168.4 --- 5 mg/L IAS+5 mg/L DTAB 58.1 -181.7 -679.1 8.2 95.1 5 mg/L IAS+5 mg/L TTAB 54.8 -223.6 -705.9 25.2 85.0 5 mg/L IAS+5 mg/L CTAB 55.9 -207.9 -738.8 79.9 52.6