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AuthorAnbealagan, Lanisha D.
AuthorNg, Tiffany Y.
AuthorChew, Thiam L.
AuthorYeong, Yin F.
AuthorLow, Siew C.
AuthorOng, Yit T.
AuthorHo, Chii-Dong
AuthorJawad, Zeinab A.
Available date2024-04-22T04:57:06Z
Publication Date2021
Publication NameMembranes
ResourceScopus
ISSN20770375
URIhttp://dx.doi.org/10.3390/membranes11080630
URIhttp://hdl.handle.net/10576/53999
AbstractIn 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 (NH2-RHO) into polysulfone (PSf) based MMMs with the primary aim of enhancing the membrane's gas permeation and separation performance. The synthesized zeolite RHO, NH2-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 1-3 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 NH2-RHO into MMMs.
SponsorAcknowledgments: This research work was supported by the Fundamental Research Grant Scheme (FRGS) Ref: FRGS/1/2020/TK0/UTP/02/28 (Cost center: 015MA0-123) from the Ministry of Higher Education Malaysia (MOHE) and YUTP-Fundamental Research Grant (Cost center: 015LC0-258). The author would also like to acknowledge support from Universiti Teknologi PETRONAS (UTP), Institute of Contaminant Management, UTP and CO2 Research Centre (CO2RES), UTP.
Languageen
PublisherMDPI AG
SubjectCO2 separation
Mixed matrix membranes (MMMs)
Polysulfone
Silane modification
Zeolite RHO
TitleModified zeolite/polysulfone mixed matrix membrane for enhanced CO2/CH4 separation
TypeArticle
Issue Number8
Volume Number11
dc.accessType Open Access


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