A Tailor-Made Interpenetrated MOF with Exceptional Carbon-Capture Performance from Flue Gas
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
Functional Materials Design, Discovery and Development (FMD3)
Permanent link to this recordhttp://hdl.handle.net/10754/652948
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AbstractMetal-organic frameworks (MOFs) have attracted significant attention as sorbents for low-energy separation of CO2 from flue gas. Herein, we report the use of an interpenetration approach to developing a fluorinated MOF with the appropriate pore system to enable the efficient capture of CO2 from flue gas at 298 K. The MOF, dptz-CuTiF6, exhibits excellent volumetric and gravimetric CO2 uptakes at 10% CO2 and 298 K, which are superior to those of the reference aqueous amine technique, with significantly lower energy input for regeneration (38 kJ mol−1 versus 105 kJ mol−1). In cyclic breakthrough experiments, dptz-CuTiF6 achieves complete CO2 desorption at 298 K under inert gas purging. Single-crystal X-ray diffraction studies demonstrate that the exceptional CO2 adsorption capacity, moderate CO2 heat of adsorption, and high CO2-N2 selectivity are due to the optimal packing of the CO2 molecules within the MOF as well as the favorable thermodynamics and kinetics from cooperative host-guest interactions.
CitationLiang W, Bhatt PM, Shkurenko A, Adil K, Mouchaham G, et al. (2019) A Tailor-Made Interpenetrated MOF with Exceptional Carbon-Capture Performance from Flue Gas. Chem 5: 950–963. Available: http://dx.doi.org/10.1016/j.chempr.2019.02.007.
SponsorsResearch reported in this publication was supported by Saudi Aramco and the King Abdullah University of Science and Technology.