Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 572, Issue -, Pages 91-106Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.03.065
Keywords
CO2 corrosion; Corrosion inhibitors; Synthesis; Thiadiazole; Adsorption; Chemisorption
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Funding
- National Natural Science Foundation of China [51571097, 51371086]
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Three thiadiazole derivatives with different substituent groups, 2-(benzylthio)-5-methyl-1,3,4-thiadia zole(BMT), 2-(benzylthio)-5-(butylthio)-1,3,4-thiadiazole(BBT), and 5-(benzylthio)-1,3,4-thiadiazole-2-thiol(BTT), were synthesized and studied as the corrosion inhibitors for N80 carbon steel in CO2 saturated oilfield produced water. It is found that the synthesized thiadiazole derivatives could effectively inhibit the corrosion of N80 carbon steel by chemisorption. The corrosion inhibition performance of the organic compounds is in the order: BTT > BBT > BMT. The theoretical calculations indicate that the tautomeric transformation from thiol-BTT to thione-BTT may be responsible for the high inhibition performance of BTT. (C) 2020 Elsevier Inc. All rights reserved.
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