Novel approach to fabricate carbon molecular-sieve membranes based on consideration of interpenetrating networks

Pei Shi Tin; Tai Shung Chung

doi:10.1002/marc.200400129

Novel approach to fabricate carbon molecular-sieve membranes based on consideration of interpenetrating networks

Pei Shi Tin, Tai Shung Chung^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Carbon molecular-sieve membranes (CMSMs) have shown great potential for gas separation. They exhibit high selectivity by permitting effective size- and shape-separation between gas molecules of similar molecular dimensions. Hence, the control of their pore size is very important. While previous studies have focused on the conditions of pyrolysis and its effect on CMSM properties, a novel approach is reported here whereby the precursor polymer is chemically modified prior to pyrolysis and the resultant CMSM was investigated for its gas separation properties. Pyrolysis of chemically crosslinked and uncrosslinked Matrimid® resulted in a change in d-spacing from 5.6 to 3.6 and 3.7 Å, respectively. The crosslinked CMSM also exhibited greater ordering in its packing. The Matrimid-derived CMSMs exhibited excellent separation properties for CO₂/CH₄.

Original language	English (US)
Pages (from-to)	1247-1250
Number of pages	4
Journal	Macromolecular Rapid Communications
Volume	25
Issue number	13
DOIs	https://doi.org/10.1002/marc.200400129
State	Published - Jul 5 2004
Externally published	Yes

Keywords

Crosslinking
Gas separation
Membranes
Modification
Polyimide precursors

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/marc.200400129

Cite this

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abstract = "Carbon molecular-sieve membranes (CMSMs) have shown great potential for gas separation. They exhibit high selectivity by permitting effective size- and shape-separation between gas molecules of similar molecular dimensions. Hence, the control of their pore size is very important. While previous studies have focused on the conditions of pyrolysis and its effect on CMSM properties, a novel approach is reported here whereby the precursor polymer is chemically modified prior to pyrolysis and the resultant CMSM was investigated for its gas separation properties. Pyrolysis of chemically crosslinked and uncrosslinked Matrimid{\textregistered} resulted in a change in d-spacing from 5.6 to 3.6 and 3.7 {\AA}, respectively. The crosslinked CMSM also exhibited greater ordering in its packing. The Matrimid-derived CMSMs exhibited excellent separation properties for CO2/CH4.",

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T1 - Novel approach to fabricate carbon molecular-sieve membranes based on consideration of interpenetrating networks

AU - Tin, Pei Shi

AU - Chung, Tai Shung

PY - 2004/7/5

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N2 - Carbon molecular-sieve membranes (CMSMs) have shown great potential for gas separation. They exhibit high selectivity by permitting effective size- and shape-separation between gas molecules of similar molecular dimensions. Hence, the control of their pore size is very important. While previous studies have focused on the conditions of pyrolysis and its effect on CMSM properties, a novel approach is reported here whereby the precursor polymer is chemically modified prior to pyrolysis and the resultant CMSM was investigated for its gas separation properties. Pyrolysis of chemically crosslinked and uncrosslinked Matrimid® resulted in a change in d-spacing from 5.6 to 3.6 and 3.7 Å, respectively. The crosslinked CMSM also exhibited greater ordering in its packing. The Matrimid-derived CMSMs exhibited excellent separation properties for CO2/CH4.

AB - Carbon molecular-sieve membranes (CMSMs) have shown great potential for gas separation. They exhibit high selectivity by permitting effective size- and shape-separation between gas molecules of similar molecular dimensions. Hence, the control of their pore size is very important. While previous studies have focused on the conditions of pyrolysis and its effect on CMSM properties, a novel approach is reported here whereby the precursor polymer is chemically modified prior to pyrolysis and the resultant CMSM was investigated for its gas separation properties. Pyrolysis of chemically crosslinked and uncrosslinked Matrimid® resulted in a change in d-spacing from 5.6 to 3.6 and 3.7 Å, respectively. The crosslinked CMSM also exhibited greater ordering in its packing. The Matrimid-derived CMSMs exhibited excellent separation properties for CO2/CH4.

KW - Crosslinking

KW - Gas separation

KW - Membranes

KW - Modification

KW - Polyimide precursors

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Novel approach to fabricate carbon molecular-sieve membranes based on consideration of interpenetrating networks

Abstract

Keywords

ASJC Scopus subject areas

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