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- W4367296027 abstract "Separation of CH4/N2 mixture in coal-mine gas with low CH4 concentration is still challenging due to similar physical properties between CH4 and N2. Herein, we construct quantitative relationships between the pore distribution and CH4 adsorption capacity of porous carbon, exploring the specific role of micropores and meso-/macropores in the accommodation of CH4. Then, nickel (Ni) species selected on account of density functional theory (DFT) were employed for accurately regulating the size and surface properties of the pore structure, targeted to enhance the separation of CH4 against N2. The results indicate that 10 %Ni/C adsorbent achieved the highest CH4 adsorption (28.3 cm3/g) as well as CH4/N2 selectivity (5.29), compared to 20.0 cm3/g and 3.67 of the porous carbon. Additionally, a deep understanding of the synergistic effect between porous sizes and adsorption potentials provided by Ni species is triggered by the obtained results, which indicated Ni-decorated porous carbon as promising adsorbents and provided new insight for the improvement of CH4/N2 separation." @default.
- W4367296027 created "2023-04-29" @default.
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- W4367296027 date "2023-09-01" @default.
- W4367296027 modified "2023-09-29" @default.
- W4367296027 title "New insight into efficient CH4/N2 separation based on Ni-decorated porous carbon functional composites" @default.
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- W4367296027 doi "https://doi.org/10.1016/j.fuel.2023.128480" @default.
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