Corrosion Inhibition of Q235 Steel in Hydrochloric Acid Solution by Two Compounds of O,O'-dithiophosphate
In this work,the O,O'-dithiophosphate derivatives of S-4-methylbenzyl-O,O'-di(phenyl)dithiophosphate(Inhi-Ph)and S-4-methyl benzyl-O,O'-di(4-bromophenyl)dithiophosphate(Inhi-BrPh)were synthesized and characterized by elemental analysis,FT-IR,1H,13C and 31P NMR.Meanwhile,the corrosion inhibition of Q235 steel in HCl solution by synthesized inhibitors was evaluated by weight loss and electrochemical measurements.Measurement results indicate that the two inhibitors of Inhi-Ph and Inhi-BrPh are mixed-type inhibitor,the inhibition efficiency increase with inhibitor concentration increasing,decrease with HCl concentration and temperature increasing.And the adsorption of Inhi-Ph and Inhi-BrPh on Q235 steel surface obeys Langmuir isotherm,which belongs to chemical adsorption.
Dithiophosphate Inhibitor Electrochemical Weight loss Langmuir
GOU Wan ZHOU Lvshan LAI Chuan XIE Bin LI Xiaolong CHEN Luo
School of Chemistry and Chemical Engineering,Eastern Sichuan Sub-center of National Engineering Rese Institute of Functional Materials,Sichuan University of Science and Engineering,Zigong 643000,PR Chi
国内会议
四川自贡
英文
87-96
2018-05-25（万方平台首次上网日期，不代表论文的发表时间）