Journal
FUEL
Volume 210, Issue -, Pages 836-843Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2017.08.043
Keywords
Carbon dioxide capture; Deep eutectic solvents; CO(2)BOLs; Glycerol
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Funding
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2016YFC0400406]
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Glycerol, an abundant byproduct in biodiesel industry process, has received a lot of attention in recent years. In this work, a series of glycerol-derived binary and ternary CO2 binding organic liquids (CO(2)BOLs), were proposed for carbon capture. Physical properties, H-1 NMR spectra and FT-IR spectra of these systems were studied to describe the multiple interactions between constituents. The CO2 absorption performances were evaluated in details, and excellent CO2 uptake capacity was achieved. In order to systematically clarify the role of glycerol in superbase environment for CO2 capture process, binary systems were further explored to support the conclusions both theoretically and experimentally. The characteristic that glycerol could easily be deprotonated in superbase environment, was proved to be benefit to the efficient and homogeneous capture of CO2, and a corresponding absorption mechanism was put forward. In addition, the effects of superbase and ionic liquids on absorption were also investigated. The results in this work showed how green, economic and high performance absorbents could be designed for applications of carbon capture.
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