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One‐stage Template‐free KOH Activation for Mesopore‐enriched Carbons and Their Application in CO 2 Capture
Author(s) -
Ko WenYin,
Lu YingJu,
Lin KuanJiuh
Publication year - 2017
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201700094
Subject(s) - mesoporous material , chemistry , adsorption , fourier transform infrared spectroscopy , scanning electron microscope , raman spectroscopy , activated carbon , specific surface area , chemical engineering , carbon fibers , nuclear chemistry , catalysis , organic chemistry , materials science , physics , optics , composite number , engineering , composite material
Activated carbons with a high mesoporous structure were prepared by a one‐stage KOH activation process without the assistance of templates and further used as adsorbents for CO 2 capture. The physical and chemical properties as well as the pore structures of the resulting mesoporous carbons were characterized by N 2 adsorption isotherms, scanning electron microscopy ( SEM ), X‐ray diffraction ( XRD ), Raman spectroscopy, and Fourier transform infrared ( FTIR ) spectroscopy. The activated carbon showed greater specific surface area and mesopore volume as the activation temperature was increased up to 600°C, showing a uniform pore structure, great surface area (up to ~815 m 2 /g), and high mesopore ratio (~55%). The activated sample exhibited competitive CO 2 adsorption capacities at 1 atm pressure, reaching 2.29 and 3.4 mmol/g at 25 and 0°C, respectively. This study highlights the potential of well‐designed mesoporous carbon as an adsorbent for CO 2 removal and widespread gas adsorption applications.