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Effect of micropores on CO2 capture in ordered mesoporous CMK-3 carbon at atmospheric pressure
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SYSNO ASEP 0544481 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of micropores on CO2 capture in ordered mesoporous CMK-3 carbon at atmospheric pressure Author(s) Vorokhta, Maryna (USMH-B) ORCID, SAI
Morávková, Jaroslava (UFCH-W) RID, ORCID
Dopita, M. (CZ)
Zhigunov, Alexander (UMCH-V) RID, ORCID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Pilař, Radim (UFCH-W) RID, ORCID
Sazama, Petr (UFCH-W) RID, ORCIDNumber of authors 7 Source Title Adsorption-Journal of the International Adsorption Society. - : Springer - ISSN 0929-5607
Roč. 27, č. 8 (2021), s. 1221-1236Number of pages 16 s. Publication form Online - E Language eng - English Country US - United States Keywords Ordered mesoporous-microporous carbon ; CO2 adsorption isotherm ; Selectivity ; Kinetics ; Isosteric heat Subject RIV DI - Air Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) Subject RIV - cooperation Institute of Macromolecular Chemistry - Macromolecular Chemistry
J. Heyrovsky Institute of Physical Chemistry - Physical ; Theoretical ChemistryR&D Projects LM2018124 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support USMH-B - RVO:67985891 ; UFCH-W - RVO:61388955 ; UMCH-V - RVO:61389013 UT WOS 000658079000001 EID SCOPUS 85107509626 DOI 10.1007/s10450-021-00322-y Annotation This paper presents an investigation of CO2 capture ability of ordered carbon (CMK-3) composed of a two-dimensional hexagonal array of turbostratic carbon rods of 19.7 nm and 8.7 nm in diameter with interstitial mesopores and non-restricted micropores in the rods at atmospheric pressure. The CMK-3 carbon had a mesopore mean inner diameter of 3.42 nm and a microporous structure with modus of pore diameter of 1.30 nm. Despite the fact that the mesopores did not directly take part in CO2 adsorption at atmospheric pressure, the carbon material exhibited good performance in CO2 capture, adsorbing 1.70 mmol g(-1) and 1.07 mmol g(-1) in the micropores at 293 and 323 K, respectively. The open mesoporous channel structure with regular architecture provided easy accessibility of the micropores in the carbon walls that formed the structure of CMK-3 carbon. Enhancement of accessibility improved the molecular transport of CO2, providing advantageous kinetics compared to purely microporous materials. The adsorption rate obtained from kinetics studies were decreasing with gas pressure increase in the system and were increasing with temperature increase. The ordered mesoporous-microporous carbon structure allowed excellent reversibility, regeneration ability and high selectivity of CO2 over N-2 molecules. Workplace Institute of Rock Structure and Mechanics Contact Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Year of Publishing 2022 Electronic address https://link.springer.com/article/10.1007%2Fs10450-021-00322-y
Number of the records: 1