Innovative surfactant of Gemini-type for dissolution mitigation of steel in pickling HCl medium  

作　　者：Medhat Kamel Mohamed Hegazy Salah Rashwan Mohamed El Kotb 

机构地区：[1]Department of Chemistry,Faculty of Science,Suez Canal University,Ismailia 41522,Egypt [2]Egyptian Petroleum Research Institute(EPRI),Nasr City,Cairo 11727,Egypt

出　　处：《Chinese Journal of Chemical Engineering》2021年第6期125-133,共9页中国化学工程学报（英文版）

摘　　要：A new surfactant of Gemini-type,N,N'-((phthylbis(oxy))bis(ethane-2,1-diyl))bis(N,N-dimethyldodecan-1-aminium bromide)is prepped&confirmed.The dissolution suppression impact of the new compound on steel is performed in 1 mol·L^(-1)HCl environment by means of chemical and electrochemical methods.The prepared surfactant is an agreeable dissolution inhibitor for steel.The mitigation efficacy rises with the quantity of the compound.The surfactant belongs to inhibitors of mixed-type.The adsorption of the synthesized compound followed the Langmuir's model.The negative magnitudes of bothΔG_(ads)^(θ) andΔH^(adsθ)indicate that the adsorption process proceeds from its own accord and exothermic.The mechanism of adsorption is elucidated by scanning microscopy.It is established that the transfer resistance(R_(ct))value rose,where the value of the phase element(CPE)reduced with the amount of synthesized inhibitor.According to the experimental data arrived by surface tension measurements,the prepared compound is a powerful active agent at the air/water boundary.

关 键 词：Innovative Gemini surfactant Synthesis Dissolution mitigation Steel Pickling HCl media 

分 类 号：TG174.42[金属学及工艺—金属表面处理] TQ423[金属学及工艺—金属学]