Gas permeation properties of the matrimid based carbon tubular membrane: the effect of carbonization temperature
Carbon membranes produced from the carbonization of polymeric materials is a promising candidate for gas separation, as it offers good permeability-selectivity combination exceeding polymeric membranes. Carbon membranes are particularly useful in gas separation, and excellent separation could be ach...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Published: |
WAIRCO Journal Publishers
2015
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8273/ http://eprints.uthm.edu.my/8273/1/19_Gas_Permeation_Properties_of_the_Matrimid.pdf |
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| Summary: | Carbon membranes produced from the carbonization
of polymeric materials is a promising candidate for gas
separation, as it offers good permeability-selectivity combination
exceeding polymeric membranes. Carbon membranes are
particularly useful in gas separation, and excellent separation
could be achieved even between gases with almost similar
molecular size. In this study, tubular supported carbon
membrane was prepared using Matrimid 5218 as polymeric
precursor. The polymer solution was coated on the surface of
tubular support by using dip-coating method. In order to
produce a high quality carbon membrane, the effect of
carbonization temperature on the gas permeation properties was
studied. The polymer tubular membrane was carbonized under
Argon atmosphere at different carbonization temperature of 600,
750, and 850 °C. Pure gas permeation tests were performed using
CO2 and N2 at room temperature with pressure 8 bars. Based on
the results, the highest CO2/ N2 selectivity of 79.69 was obtained
for carbon membrane prepared at 850 °C. High carbonization
temperature is necessary to break down the functional group of
polymeric precursor into carbon material. An ideal carbon
membrane carbonized at optimum temperature would possess
high separation properties with high crystalline, density and
compactness. |
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