Premium
Ultra‐thin skin carbon hollow fiber membranes for sustainable molecular separations
Author(s) -
Zhang Chen,
Kumar Rachana,
Koros William J.
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16611
Subject(s) - permeance , membrane , fiber , materials science , layer (electronics) , chemical engineering , molecular sieve , substrate (aquarium) , selectivity , gas separation , nanotechnology , composite material , chemistry , adsorption , organic chemistry , permeation , catalysis , engineering , biochemistry , oceanography , geology
Significance A transformative platform is reported to derive ultra‐thin carbon molecular sieve (CMS) hollow fiber membranes from dual‐layer precursor hollow fibers with independently tuned skin layer and substrate properties. These ultra‐thin CMS hollow fiber membranes show attractive CO 2 /CH 4 separation factors and excellent CO 2 permeances up to ~1,400% higher than state‐of‐the‐art asymmetric CMS hollow fiber membranes. They provide a unique combination of permeance and selectivity competitive with zeolite membranes, but with much higher membrane packing density and potentially much lower costs.