Flying MOFs: polyamine-containing fluidized MOF/SiO 2 hybrid materials for CO 2 capture from post-combustion flue gas
Solid-state synthesis ensures a high loading and well-dispersed growth of a large collection of metal–organic framework (MOF) nanostructures within a series of commercially available mesoporous silica. This approach provides a general, highly efficient, scalable, environmentally friendly, and inexpe...
Uložené v:
| Vydané v: | Chemical science (Cambridge) Ročník 9; číslo 20; s. 4589 - 4599 |
|---|---|
| Hlavní autori: | , , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
England
Royal Society of Chemistry (RSC)
01.01.2018
|
| Predmet: | |
| ISSN: | 2041-6520, 2041-6539 |
| On-line prístup: | Získať plný text |
| Tagy: |
Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
|
| Shrnutí: | Solid-state synthesis ensures a high loading and well-dispersed growth of a large collection of metal–organic framework (MOF) nanostructures within a series of commercially available mesoporous silica. This approach provides a general, highly efficient, scalable, environmentally friendly, and inexpensive strategy for shaping MOFs into a fluidized form, thereby allowing their application in fluidized-bed reactors for diverse applications, such as CO
2
capture from post-combustion flue gas. A collection of polyamine-impregnated MOF/SiO
2
hybrid sorbents were evaluated for CO
2
capture under simulated flue gas conditions in a packed-bed reactor. Hybrid sorbents containing a moderate loading of (Zn)ZIF-8 are the most promising sorbents in terms of CO
2
adsorption capacity and long-term stability (up to 250 cycles in the presence of contaminants: SO
2
, NO
x
and H
2
S) and were successfully prepared at the kilogram scale. These hybrid sorbents demonstrated excellent fluidizability and performance under the relevant process conditions in a visual fluidized-bed reactor. Moreover, a biochemically inspired strategy for covalently linking polyamines to MOF/SiO
2
through strong phosphine bonds has been first introduced in this work as a powerful and highly versatile post-synthesis modification for MOF chemistry, thus providing a novel alternative towards more stable CO
2
solid sorbents. |
|---|---|
| Bibliografia: | USDOE Office of Fossil Energy (FE) FE0026432 |
| ISSN: | 2041-6520 2041-6539 |
| DOI: | 10.1039/C7SC05372J |