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Fabrication of Homogenous Polymer‐Zeolite Nanocomposites as Mixed‐Matrix Membranes for Gas Separation
Author(s) -
Karkhanechi H.,
Kazemian H.,
Nazockdast H.,
Mozdianfard M. R.,
Bidoki S. M.
Publication year - 2012
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100236
Subject(s) - zeolite , membrane , gas separation , polyimide , chemical engineering , polymer , materials science , fabrication , nanocomposite , selectivity , semipermeable membrane , void (composites) , polymer chemistry , chemistry , organic chemistry , composite material , layer (electronics) , catalysis , medicine , biochemistry , alternative medicine , pathology , engineering
Interfacial void‐free mixed‐matrix membranes (MMMs) of polyimide (PI)/zeolite were developed using 13X and Linde type A nano‐zeolites and tested for gas separation purposes. Fabrication of a void‐free polymer‐zeolite interface was verified by the decreasing permeability developed by the MMMs for the examined gases, in comparison to the pure PI membrane. The molecular sieving effect introduced by zeolite 13X improved the CO 2 /N 2 and CO 2 /CH 4 selectivity of the MMMs. Separation tests indicated that the manufactured nanocomposite membrane with 30 % loading of 13X had the highest permselectivity for the gas pairs CO 2 /CH 4 and CO 2 /N 2 at the three examined feed pressures of 4, 8 and 12 atm.