| Title |
Amine-functionalized biogenic silica incorporation effect on poly (ether-block-amide) membrane CO2/N2 separation performance |
| ID_Doc |
10041 |
| Authors |
Setiawan, WK; Chiang, KY |
| Title |
Amine-functionalized biogenic silica incorporation effect on poly (ether-block-amide) membrane CO2/N2 separation performance |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.memsci.2023.121732 |
| Abstract |
The development of eco-friendly filler materials in membrane-based gas separation technology have become fascinating science that has established a tremendous circular economy. Biogenic silica (BSi) was recovered from rice husks and functionalized using three different molecular structure amine groups in this study. Poly-ethyleneimine/PEI, N-methylaminopropyl trimethoxysilane/MAPS, and 2-(2-pyridyl) ethyltrimethoxysilane/ PETS are used as inorganic fillers for the fabrication of poly (ether-block-amide) (Pebax-1657) mixed matrix membranes (MMMs). The amine functionalized silica and Pebax chains were found to interact through inter-molecular hydrogen bonding, tightening the interfacial space and strengthening the thermal stability of the original polymeric membranes. Moreover, the amine groups in each functionalized BSi were sufficient to establish a facilitated transport mechanism for CO2 through the Pebax membranes. Amine functionalized BSi could remarkably upgrade the CO2 permeability (110-120%) and CO2/N2 selectivity (60-70%), surpassing Robeson's upper bound 2008. In addition, Pebax/BSi-MAPS-10 became the most reliable membrane in this study, with CO2 permeability of 90.05 Barrer and CO2/N2 selectivity of 100.41. These findings revealed that amine functionalized BSi was promising for the fabrication of high-quality Pebax MMMs for CO2/N2 separation in industrial applications. |
| Author Keywords |
Pebax 1657; Amine; Biogenic silica; CO2 separation |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001007177800001 |
| WoS Category |
Engineering, Chemical; Polymer Science |
| Research Area |
Engineering; Polymer Science |
| PDF |
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