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Improving CO 2 /CH 4 and CO 2 /N 2 adsorptive selectivity of Cu‐BTC and MOF‐derived nanoporous carbon by modification with nitrogen‐containing groups
Author(s) -
Salehi Samira,
Anbia Mansoor,
Razavi Fatemeh
Publication year - 2019
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13302
Subject(s) - thermogravimetric analysis , adsorption , metal organic framework , fourier transform infrared spectroscopy , nanoporous , materials science , thermal stability , selectivity , inorganic chemistry , desorption , carbonization , infrared spectroscopy , scanning electron microscope , chemistry , nuclear chemistry , chemical engineering , organic chemistry , nanotechnology , composite material , catalysis , engineering
For the first time in this study compared the adsorption capacity and selectivity of carbon dioxide (CO 2 ), methane (CH 4 ), and nitrogen (N 2 ) on amine‐modified copper(II) benzene‐1,3,5‐tricarboxylate (Cu‐BTC) and metal organic framework‐derived nanoporous carbon (MOF/NPC) by employing a volumetric measurement. The MOF/NPC is synthesized via direct carbonization of the Cu‐BTC as a template without any carbon precursor at 900°C under N 2 atmosphere and shows easy synthesis, large surface area, high excellent thermal and chemical stability as well as high resistance to moisture. All the prepared materials are characterized by nitrogen adsorption/desorption, Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD) and scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDX), and thermogravimetric analysis (TGA). The porous supports could be effectively improved for CO 2 adsorption with amine groups due to their high affinity toward CO 2 . CO 2 adsorption capacity for MOF/NPC is 7.50 mmol g −1 when MOF/NPC is modified with the amine, CO 2 adsorption capacity is increased (from 7.50 to 11.40 mmol g −1 ) at 298 K and 10 bar.