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标题：Adsorption characterization and CO 2 breakthrough of MWCNT/Mg-MOF-74 and MWCNT/MIL-100(Fe) composites
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作者：Rached Ben-Mansour ; Naef A. A. Qasem ; Mohamed A. Habib 等
期刊名称：INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
印刷版ISSN：2008-9163
出版年度：2018
卷号：9
期号：2
页码：169-185
DOI：10.1007/s40095-018-0260-1
语种：English
出版社：ISLAMIC AZAD UNIVERSITY, SOUTH TEHRAN BRANCH
摘要：Carbon capture using adsorption processes can significantly mitigate global warming. Mg-MOF-74 is a distinct reticular material amongst other adsorbents owing to its distinguished carbon dioxide adsorption capacity and selectivity under low-pressure applications, while MIL-100(Fe) has lower CO2adsorption capacity, but extraordinary thermal and hydrostability in comparison to many classes of MOFs. In this paper, we present CO2adsorption characteristics of new compounds formed by the incorporation of multi-walled carbon nanotubes (MWCNTs) into Mg-MOF-74 and MIL-100(Fe). This was done to improve the thermal diffusion properties of the base MOFs to enhance their adsorption capacities. The new composites have been characterized for degree of crystallinity, and the CO2and N2equilibrium uptake. The real adsorption separation has been investigated by dynamic breakthrough tests at 297 K and 101.325. The equilibrium isotherm results showed that Mg-MOF-74 and 0.25 wt% MWCNT/MIL-100(Fe) (MMC2) have the highest CO2uptake in comparison to the other investigated composites. However, the interesting results obtained from breakthrough tests demonstrate that good improvements in the CO2adsorption uptake and breakthrough breakpoint over pristine Mg-MOF-74 have been accomplished by adding 1.5 wt% MWCNT to Mg-MOF-74. The improvements of CO2adsorption capacity and breakpoint were about 7.35 and 8.03%, respectively. Similarly, the CO2adsorption uptake and breakthrough breakpoint over pristine MIL-100(Fe) are obtained by 0.1 wt% MWCNT/MIL-100(Fe) (MMC1) with improvements of 12.02 and 9.21%, respectively.