Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 123, Issue -, Pages 79-85Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2018.03.026
Keywords
Thermokinetics; Calorimetry; Lithium extraction; Ionic liquid
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Funding
- National Natural Science Foundation of China [U1607129, U1607123, 21773170]
- Application Foundation and Advanced Technology Program of Tianjin [15JCQNJC08300]
- Higher School Science and Technology Development Fund of Tianjin [20140511]
- China Postdoctoral Science Foundation [2016M592827, 2016M592828]
- Yangtze Scholars and Innovative Research Team of the Chinese University [IRT_17R81]
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The advanced micro-calorimetry and advanced thermokinetics software (AKTS) were employed to investigate the extraction thermokinetics of lithium extraction with the extractive systems [tri-isobutyl phosphate (TIBP) + ionic liquids (ILs) + kerosene] at (298.15, 308.15 and 323.15) K. The reaction heats of the system at different temperatures were experimentally determined, and the variation of reaction progresses and rates versus time were obtained for the two extractive systems at different temperatures. It was found that the reaction progress and extraction rate are accelerated while the extraction efficiencies of lithium ion are in reverse with the increasing of temperature. In addition, the activation energy and pre exponential factor for the two extractive systems are shifty regularly with the reaction progress. (C) 2018 Elsevier Ltd.
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