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http://dx.doi.org/10.5855/ENERGY.2018.27.4.080

Usable Capacity for CO2 capture and storage in MOFs  

Park, Seoha (Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology(GNTECH))
Oh, Hyunchul (Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology(GNTECH))
Jang, Haenam (Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology(GNTECH))
Publication Information
Journal of Energy Engineering / v.27, no.4, 2018 , pp. 80-85 More about this Journal
Abstract
Usable capacity is one of the most important parameters for evaluating the performance of an adsorbent for $CO_2$ capture from flue gas streams. In the pressure swing adsorption (PSA) process, the usable capacity is calculated as the difference between the quantity adsorbed in flue gas at high pressure (ca. 20 bar) and the quantity adsorbed at lower purge pressure (ca. 2 bar). In this paper, two stereo-types of metal-organic framework (MOF) were evaluated as an promising adsorbent for $CO_2$ capture: flexible structured MOF (MIL-53) and MOF possessing strong binding sites (MOF-74). The results showed that a total $CO_2$ capture capacity is strongly related to the specific surface area and heat of adsorption, revealing high uptake in MOF-74. However, the usable capacity was more pronounced in MIL-53 due to a structural transition.
Keywords
MOFs; MOF-74-Ni; MIL-53; $CO_2$ capture; usable capacity;
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