Sour corrosion of C1018 carbon steel and its inhibition by 1-benzylimidazole: electrochemical, SEM, FTIR and computational assessment

doi:10.1080/01694243.2021.1938474

IMR OpenIR

	Sour corrosion of C1018 carbon steel and its inhibition by 1-benzylimidazole: electrochemical, SEM, FTIR and computational assessment
	Onyeachu, Ikenna B.1,2; Njoku, Demian, I 2,3; Kaya, Savas 4; El Ibrahimi, Brahim 5; Nnadozie, C. Fortee 6
通讯作者	Onyeachu, Ikenna B.(benonyeachu@gmail.com)
	2021-06-14
发表期刊	JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
ISSN	0169-4243
页码	21
摘要	The sour corrosion of C1018 carbon steel in CO2-saturated 3.5% NaCl + 100 ppm H2S solution and its inhibition by a low-toxic molecule, 1-benzylimidazole (1-Benz), has been investigated. Electrochemical impedance spectroscopy (EIS) results reveal that 1-Benz can form a strongly-adsorbed and highly protective inhibitor layer on the steel surface. Potentiodynamic polarization (PDP) results confirm that 1-Benz is a mixed-type corrosion inhibitor with slightly more anodic tendency. An optimum concentration of 150 ppm provided up to 83% inhibition efficiency. Based on FTIR characterization, 1-Benz interacts with the steel surface using its nitrogen atom and C=C pi-electrons and it adsorbs following the Temkin isotherm. The adsorption reduces localized corrosion, according to SEM-EDX observations. Theoretical parameters confirm that the electron-rich imidazole N atoms and electron-deficient C atoms in the phenyl ring ensure easy electron transfer between 1-Benz and the steel surface.
关键词	Sour corrosion carbon steel imidazole DFT EIS FTIR
资助者	World Bank Africa Centers of Excellence for Impact (ACE Impact) Project
DOI	10.1080/01694243.2021.1938474
收录类别	SCI
语种	英语
资助项目	World Bank Africa Centers of Excellence for Impact (ACE Impact) Project[NUC/ES/507/1/304]
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Chemical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:000661718900001
出版者	TAYLOR & FRANCIS LTD
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160464
专题	中国科学院金属研究所
通讯作者	Onyeachu, Ikenna B.
作者单位	1.Edo State Univ Uzairue, Dept Ind Chem, Uzairue, Edo State, Nigeria 2.Fed Univ Technol Owerri, Africa Ctr Excellence Future Energies & Electroch, Owerri, Nigeria 3.Chinese Acad Sci, Ctr Corros & Protect Mat, Inst Met Res, Shenyang, Peoples R China 4.Sivas Cumhuriyet Univ Hlth Serv Vocat Sch, Dept Chem, Sivas, Turkey 5.Univ Ibn Zohr, Fac Sci, Dept Chem, Agadir, Morocco 6.Fed Univ Technol Owerri, Dept Chem, Owerri, Nigeria
推荐引用方式 GB/T 7714	Onyeachu, Ikenna B.,Njoku, Demian, I,Kaya, Savas,et al. Sour corrosion of C1018 carbon steel and its inhibition by 1-benzylimidazole: electrochemical, SEM, FTIR and computational assessment[J]. JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY,2021:21.
APA	Onyeachu, Ikenna B.,Njoku, Demian, I,Kaya, Savas,El Ibrahimi, Brahim,&Nnadozie, C. Fortee.(2021).Sour corrosion of C1018 carbon steel and its inhibition by 1-benzylimidazole: electrochemical, SEM, FTIR and computational assessment.JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY,21.
MLA	Onyeachu, Ikenna B.,et al."Sour corrosion of C1018 carbon steel and its inhibition by 1-benzylimidazole: electrochemical, SEM, FTIR and computational assessment".JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY (2021):21.