期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 56, 期 -, 页码 234-247出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2017.07.016
关键词
Ionic liquid; Corrosion inhibition; Acid solution; Polarization; EIS
资金
- National Major Science and Technology Program for Water Pollution Control and Treatment [2013ZX07210-001]
- National Science & Technology Pillar Program during the Twelfth Five-year Plan Period for Seawater Desalination Technology [2015BAB08B00]
- Natural Science Foundation for Young Scholars of Jiangsu Province, China [BK20160983]
- National Natural Science Foundation of China [21605084]
- Research and Application Demonstration of Chemical agents Key Technology of Seawater Desalination Process [2017YFC0404100]
- Special basic research service for the central level public welfare research institute [GYZX170302]
The ionic liquids, 1-viny1-3-aminopropylimidazolium hexafluorophosphate ([VAIM][PF6]) and 1-vinyl-3-aminopropylimidazolium tetrafluoroborate ([VAIM][BF4]) acted as the corrosion inhibitors. Weight loss measurements showed the corrosion inhibition efficiencies of [VAIM][PF6] and [VAIM][BF4] were 90.53% and 54.01% at 45 degrees C, respectively. The ILs were mix-type inhibitors. Raising the temperature can have a decreased inhibition efficiency of [VAIM][BF4], while [VAIM][PF6] presented an opposite trend. In addition, [VAIM][PF6] obeyed Langmuir monolayer adsorption isotherm, while [VAIM][BF4] obeyed El-Awady kinetic-thermodynamic adsorption for blocking active sites. Moreover, Molecular Dynamic Simulations showed that [VAIM][PF6] owned a higher adsorption energy, which may be responsible for the more adsorption groups of [VAIM][PF6]. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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