Effect of micropores on CO2 capture in ordered mesoporous CMK-3 carbon at atmospheric pressure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00544481" target="_blank" >RIV/61388955:_____/21:00544481 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/21:00544481 RIV/67985891:_____/21:00544481 RIV/00216208:11320/21:10439492

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs10450-021-00322-y" target="_blank" >https://link.springer.com/article/10.1007%2Fs10450-021-00322-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10450-021-00322-y" target="_blank" >10.1007/s10450-021-00322-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of micropores on CO2 capture in ordered mesoporous CMK-3 carbon at atmospheric pressure

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Effect of micropores on CO2 capture in ordered mesoporous CMK-3 carbon at atmospheric pressure

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Adsorption-Journal of the International Adsorption Society

ISSN

0929-5607

e-ISSN

1572-8757

Svazek periodika

27

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

1221-1236

Kód UT WoS článku

000658079000001

EID výsledku v databázi Scopus

2-s2.0-85107509626