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[EMIM][Tf2N]-Modified Silica as Filler in Mixed Matrix Membrane for Carbon Dioxide Separation.

Authors :
Shafie, Siti Nur Alwani
Md Nordin, Nik Abdul Hadi
Bilad, Muhammad Roil
Misdan, Nurasyikin
Sazali, Norazlianie
Putra, Zulfan Adi
Wirzal, Mohd Dzul Hakim
Idris, Alamin
Jaafar, Juhana
Man, Zakaria
Khan, Asim Laeeq
Shahid, Salman
Ahmadiannamini, Pejman
Source :
Membranes; May2021, Vol. 11 Issue 5, p371, 1p
Publication Year :
2021

Abstract

This study focuses on the effect of modified silica fillers by [EMIN][Tf<subscript>2</subscript>N] via physical adsorption on the CO<subscript>2</subscript> separation performance of a mixed matrix membrane (MMM). The IL-modified silica was successfully synthesized as the presence of fluorine element was observed in both Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectrometer (XPS) analyses. The prepared MMMs with different loadings of the IL-modified silica were then compared with an unmodified silica counterpart and neat membrane. The morphology of IL-modified MMMs was observed to have insignificant changes, while polymer chains of were found to be slightly more flexible compared to their counterpart. At 2 bar of operating pressure, a significant increase in performance was observed with the incorporation of 3 wt% Sil-IL fillers compared to that of pure polycarbonate (PC). The permeability increased from 353 to 1151 Barrer while the CO<subscript>2</subscript>/CH<subscript>4</subscript> selectivity increased from 20 to 76. The aforementioned increment also exceeded the Robeson upper bound. This indicates that the incorporation of fillers surface-modified with ionic liquid in an organic membrane is worth exploring for CO<subscript>2</subscript> separation. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20770375
Volume :
11
Issue :
5
Database :
Complementary Index
Journal :
Membranes
Publication Type :
Academic Journal
Accession number :
150502320
Full Text :
https://doi.org/10.3390/membranes11050371