TY  - JOUR
JF  - Membranes
A1  - Anbealagan, L.D.
A1  - Ng, T.Y.S.
A1  - Chew, T.L.
A1  - Yeong, Y.F.
A1  - Low, S.C.
A1  - Ong, Y.T.
A1  - Ho, C.-D.
A1  - Jawad, Z.A.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113250628&doi=10.3390%2fmembranes11080630&partnerID=40&md5=b144a531146ab2de0dedc7bc599d958c
VL  - 11
Y1  - 2021///
PB  - MDPI AG
SN  - 20770375
N1  - cited By 9
N2  - In recent years, mixed matrix membranes (MMMs) have received worldwide attention for their potential to offer superior gas permeation and separation performance involving CO2 and CH4. However, fabricating defect-free MMMs still remains as a challenge where the incorporation of fillers into MMMs has usually led to some issues including formation of undesirable interfacial voids, which may jeopardize the gas separation performance of the MMMs. This current work investigated the incorporation of zeolite RHO and silane-modified zeolite RHO (NH2â??RHO) into polysulfone (PSf) based MMMs with the primary aim of enhancing the membraneâ??s gas permeation and separation performance. The synthesized zeolite RHO, NH2â??RHO, and fabricated membranes were characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared-attenuated total reflection (FTIR-ATR), thermogravimetric analysis (TGA) and field emission scanning election microscopy (FESEM). The effects of zeolite loading in the MMMs on the CO2/CH4 separation performance were investigated. By incorporating 1 wt of zeolite RHO into the MMMs, the CO2 permeability and ideal CO2/CH4 selectivity slightly increased by 4.2 and 2.7, respectively, compared to that of a pristine PSf membrane. On the other hand, a significant enhancement of 45 in ideal CO2/CH4 selectivity was attained by MMMs incorporated with 2 wt of zeolite NH2-RHO compared to a pristine PSf membrane. Besides, all MMMs incorporated with zeolite NH2-RHO displayed higher ideal CO2/CH4 selectivity than that of the MMMs incorporated with zeolite RHO. By incorporating 1â??3 wt zeolite NH2-RHO into PSf matrix, MMMs without interfacial voids were successfully fabricated. Consequently, significant enhancement in ideal CO2/CH4 selectivity was enabled by the incorporation of zeolite NH2â??RHO into MMMs. © 2021 by the authors.
IS  - 8
ID  - scholars14608
TI  - Modified zeolite/polysulfone mixed matrix membrane for enhanced CO2/CH4 separation
KW  - Carbon dioxide; Fourier transform infrared spectroscopy; Permeation; Polymer films; Separation; Thermogravimetric analysis; X ray diffraction analysis; Zeolites
KW  -  Field emission scanning; Fourier transform infrared attenuated total reflections; Gas separation performance; Interfacial voids; Mixed matrix membranes; Modified zeolite; Separation performance; Synthesized zeolite
KW  -  Gas permeable membranes
AV  - none
ER  -