Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 475, Issue -, Pages 290-302Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2014.10.034
Keywords
SMA; Polyvinylamine; Monoethanolamine; PVAm-MEA/PS membrane; CO2/H-2 separation
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Funding
- National High-tech Research and Development Project [2012AA03A611]
- Natural Science Foundation of China [20836006]
- Science 82 Technology Pillar Program of Tianjin [10ZCKFSH01700]
- National Natural Science Foundation of China [21306130]
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Small molecular amines (SMAs) (ethanecliamine (EDA), piperazine (PIP), monoethanolamine (MEA) and diethanol amine (DEA)) were separately used to modify the polyvinylamine (PVAm). ATR-FTIR, elemental analyzer, XRD and SEM were employed to characterize the SMA interacted PVAm. The PVAm-SMA/polysullone (PS) membranes were developed by coating PVAm-SMA mixed solutions on the PS ultrafiltration membrane. CO2 permeance and CO2/H-2 selectivity of the PVAm-SMAIPS membranes were investigated. Among different PVAm-SMA/PS membranes, the PVAm-MEA/PS membrane shows the highest CO2/H-2 separation performance. Moreover, the effect of the selective layer thickness on the CO2/H-2 separation performance of the PVAm-MEA/PS membrane was studied. With increasing the PVAm-MEA selective layer thickness, the CO2/H-2 separation performance of the membrane apparently decreases. Finally, the CO2/H-2 separation performance stability of the PVAm-MEA/PS membranes was investigated and no deterioration in the membrane permselectivity was observed. (C) 2014 Elsevier B.V. All rights reserved
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