Polyethyleneimine incorporated metal-organic frameworks adsorbent for highly selective CO2 capture.
Sci Rep
; 3: 1859, 2013.
Article
en En
| MEDLINE
| ID: mdl-23681218
ABSTRACT
A series of polyethyleneimine (PEI) incorporated MIL-101 adsorbents with different PEI loadings were reported for the first time in the present work. Although the surface area and pore volume of MIL-101 decreased significantly after loading PEI, all the resulting composites exhibited dramatically enhanced CO2 adsorption capacity at low pressures. At 100 wt% PEI loading, the CO2 adsorption capacity at 0.15 bar reached a very competitive value of 4.2â
mmol g(-1) at 25°C, and 3.4â
mmol g(-1) at 50°C. More importantly, the resulting adsorbents displayed rapid adsorption kinetics and ultrahigh selectivity for CO2 over N2 in the designed flue gas with 0.15â
bar CO2 and 0.75â
bar N2. The CO2 over N2 selectivity was up to 770 at 25°C, and 1200 at 50°C. We believe that the PEI based metal-organic frameworks is an attractive adsorbent for CO2 capture.
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1
Bases de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
/
Polietileneimina
/
Dióxido de Carbono
/
Compuestos de Cromo
Idioma:
En
Revista:
Sci Rep
Año:
2013
Tipo del documento:
Article