摘要
采用失质量法考察了不同温度下5%氨基磺酸中,不同质量浓度的溴化十六烷基吡啶对碳钢的缓蚀作用,并对氨基磺酸介质中溴化十六烷基吡啶在碳钢表面吸附热力学进行了研究.溴化十六烷基吡啶低质量浓度时,随质量浓度增大,缓蚀作用增强;当其质量浓度达到一定值后,缓蚀作用基本保持不变.结果表明,溴化十六烷基吡啶在碳钢表面产生单分子层吸附,并且满足Langmuir吸附规律.G 0 0吸附过程可以自发进行,并且随着温度升高G 0增大,吸附作用降低.00 H表明反应是放热过程.00 S表示随着缓蚀过程的进行,体系进入更为有序状态.
In order to study the hexadecylpyridinium bromide cation surfactant＇s corrosion inhibition and adsorption for the mild steel in sulfamic acid, the corrosion inhibition of hexadecylpyridinium bromide on mild steel in 5 % sulfamic acid was investigated with different temperatures and different concentration of sulfamic acid. The corrosion inhibition of hexadecylpyridinium bromide increases with the increasing of concentrations of hexadecylpyridinium bromide. When its concentration reaches a certain concentration, corrosion inhibition remains basically unchanged. Results indicate that the single molecule layer of hexadecylpyridinium bromide is adsorbed on the surface of the mild steel and the adsorption follows. Langmuir isothermal equation, the adsorption procedure is exothermic reaction, the adsorption ability and corrosion inhibition efficiency decrease when temperature increase. The adsorption procedure is exothermic reaction and can be spontaneous, the adsorption ability decrease when temperature increase. System into more orderly state with the process of corrosion inhibition.
出处
《高师理科学刊》
2012年第6期46-49,共4页
Journal of Science of Teachers＇College and University
关键词
溴化十六烷基吡啶
氨基磺酸
吸附
缓蚀
hexadecylpyridinium bromide
sulfamic acid
adsorption
corrosion inhibition
