油酸咪唑啉磺酸盐的合成及性能研究
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摘要
以油酸、羟乙基乙二胺和3-氯-2-羟基丙磺酸钠(CHPS-Na)合成了水溶性和缓蚀性能好的油酸咪唑啉磺酸盐(OIS),OIS临界胶束浓度cmc为9.1×10-6mol/L,最低表面张力γcmc为29.6 mN/m,在盐酸溶液中,用静态失重法研究了其对A3钢片的缓蚀和表面吸附行为。结果表明,在70℃,质量分数4%的盐酸溶液中,OIS浓度为250 mg/L时缓蚀效率高达91.5%,能够有效抑制盐酸对A3钢片的腐蚀;吸附行为符合Langmuir吸附等温式,主要以化学吸附为主。
Oleic imidazoline sulfonate was synthesized by oleic acid,hydroxy ethylene diamine and CHPSNa.The cmc is 9.1×10-6 mol/L,the lowest surface tension γcmcis 29.6 m N/m.The structure of OIS was characterized by FTIR and 1H NMR.Its corrosion inhibition performance and adsorption behavior to A3 steel were researched by static weight loss method in hydrochloric acid solution.The results revealed that corrosion inhibition efficiency of up to 91.5% when OIS at the mass concentration of 250 mg/L in 4%,hydrochloric acid solution on 70 ℃.OIS has a good inhibition efficiency for A3 mild steel in hydrochloric acid solution.The adsorption of OIS is found to follow the Langmuir adsorption isotherm.The adsorption is mainly chemical adsorption.
Oleic imidazoline sulfonate was synthesized by oleic acid,hydroxy ethylene diamine and CHPSNa.The cmc is 9.1×10-6 mol/L,the lowest surface tension γcmcis 29.6 m N/m.The structure of OIS was characterized by FTIR and 1H NMR.Its corrosion inhibition performance and adsorption behavior to A3 steel were researched by static weight loss method in hydrochloric acid solution.The results revealed that corrosion inhibition efficiency of up to 91.5% when OIS at the mass concentration of 250 mg/L in 4%,hydrochloric acid solution on 70 ℃.OIS has a good inhibition efficiency for A3 mild steel in hydrochloric acid solution.The adsorption of OIS is found to follow the Langmuir adsorption isotherm.The adsorption is mainly chemical adsorption.
引文
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[11]周丽,厉安昕,高慧妍,等.水溶性咪唑啉缓蚀剂的合成及应用研究[J].当代化工研究,2018(9):178-180.
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[13]许奕春,汤兵,付丰连,等.绿色聚天冬氨酸复配缓蚀剂对A3碳钢的缓蚀抑雾作用[J].物理化学学报,2010,26(5):1225-1232.
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