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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, I2,3; Kaya, Savas4; El Ibrahimi, Brahim5; Nnadozie, C. Fortee6
Corresponding AuthorOnyeachu, Ikenna B.(benonyeachu@gmail.com)
2021-06-14
Source PublicationJOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
ISSN0169-4243
Pages21
AbstractThe 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.
KeywordSour corrosion carbon steel imidazole DFT EIS FTIR
Funding OrganizationWorld Bank Africa Centers of Excellence for Impact (ACE Impact) Project
DOI10.1080/01694243.2021.1938474
Indexed BySCI
Language英语
Funding ProjectWorld Bank Africa Centers of Excellence for Impact (ACE Impact) Project[NUC/ES/507/1/304]
WOS Research AreaEngineering ; Materials Science ; Mechanics
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary ; Mechanics
WOS IDWOS:000661718900001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160464
Collection中国科学院金属研究所
Corresponding AuthorOnyeachu, Ikenna B.
Affiliation1.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
Recommended Citation
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.
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