【摘要】 采用浸泡失重法、电化学方法,研究了在50℃饱和的H2S/CO₂介质中Gemini表面活性剂和咪唑啉表面活性剂在Cr13钢上的吸附行为与缓蚀性能。结果表明,所研究的几种表面活性剂均在Cr13钢表面上形成致密的单分子吸附层,且吸附服从Langmuir方程式,表现出优异的缓蚀性能,明显抑制了Cr13钢在50℃饱和H₂S/CO₂介质中的腐蚀;其缓蚀能力排序为:12-6-12型Gemini表面活性剂>16-2-16型Gemini表面活性剂>咪唑啉。此外,当Gemini表面活性剂的浓度达到50 mg/L时,其缓蚀率可达到85%左右。更多还原

【Abstract】 Adsorption and corrosion inhibition of Gemini surfactants 12-6-12,and 16-2-16 as well as imidazoline on Cr13 steel in saturated H₂S/CO₂ medium at 50℃were studied by weight loss method,electrochemical polarization curves and EIS.The results showed that the three kinds of surfactants were excellent inhibitors for Cr13 steel in saturated H₂S/CO₂ medium.The corrosion inhibition of Gemini surfactants were better than that of imidazoline,and their inhibition effect reached 85%.The adsorption of three kinds of surfactants on the steel surface followed Langmiur isothermal adsorption equation.The sequence of corrosion inhibition on Cr13 steel was 12-6-12 typed Gemini surfactant>16-2-16 typed Gemini surfactant>imidazoline.更多还原