.png){kind=icon}
.png){kind=icon}
Return
Flexible all-inorganic zeolite-carbon assembled hollow fiber membranes enable robust CO2/CH4 sieving
.png){kind=icon}
PRE
AI
G
Y
Y
X
K
L
DOI：10.1002/aic.70521.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Inorganic crystalline zeolite membranes exhibit unparalleled molecular sieving, yet their intrinsic brittleness severely restricts scalable fabrication. In contrast, polymer-based mixed-matrix membranes (MMMs) offer processability but often fail to fully exploit the intrinsic precision of crystalline fillers due to the limited molecular discrimination of the polymer phase. Herein, we report a flexible, monolithic inorganic zeolite-carbon assembled (ZCA) free-standing hollow fiber membrane, comprising biomass-derived continuous carbon molecular sieve (CMS) phases and discrete zeolite phases. The resulting inorganic–inorganic interface sustains high zeolite loadings and creates fast, precise sub-nanometer transport pathways. We demonstrate efficient CO2/CH4 separation relevant to natural-gas sweetening, achieving an exceptional CO2 permeability of 1159.3 Barrer and a CO2/CH4 separation factor of 74.6 under a 25-bar mixed-gas feed, outperforming both state-of-the-art MMMs and pure zeolite membranes. Crucially, these all-inorganic membranes demonstrate remarkable mechanical flexibility and long-term stability, providing a versatile platform for engineering robust, high-performance membranes for challenging industrial separations.
Keywords:
carbon molecular sieve
hollow fiber membranes
membrane separation
mixed-matrix membranes
zeolite membranes
Journal
IF:
4
Papers:
1.1W
Citations:
2.9W
Organization
Cited Papers