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Title
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Facile synthesis and investigation of 1,8-dioxooctahydroxanthene derivatives as corrosion inhibitors for mild steel in hydrochloric acid solution
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Type
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JournalPaper
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Keywords
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1,8dioxooctahydroxanthene, corrosion inhibitors, mild steel, hydrochloric acid solution
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Abstract
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An environmentally friendly and facile method for the preparation of 1,8-dioxooctahydroxanthene between aldehydes with dimedone or cyclohexane-1,3-dione is presented in the presence of trichloromelamine (TCM) under solvent-free conditions. Also, for the first time the corrosion inhibitive performance of some 1,8-dioxooctahydroxanthene derivatives on mild steel in 0.1 M HCl was investigated using AC and DC electrochemical techniques and a quantum chemical method. An efficiency of more than 97% was obtained with 1 mmol L−1 1,8-dioxooctahydroxanthene. Density functional calculations showed that the lone pair electrons of oxygen in the structure of 1,8-dioxooctahydroxanthene are suitable sites to interact with the metal. Finally in the presence of 1,8-dioxooctahydroxanthene, a decrease in surface roughness and corrosion attacks were demonstrated by microscopy examination.
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Researchers
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Behrooz Maleki (First Researcher), Massomeh Raei (Not In First Six Researchers), Samaneh Sedigh Ashrafi (Not In First Six Researchers), Hojat Veisi (Not In First Six Researchers), Elahe Akbarzadeh (Fifth Researcher), Mehdi Baghayeri (Fourth Researcher), Mojtaba Vakili Azghandi (Third Researcher), Ali Davoodi (Second Researcher)
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