Fabrication and characterization of polyimide-zeolite L mixed matrix membranes for gas separations

Todd W. Pechar; Sangil Kim; Ben Vaughan; Eva Marand; Michael Tsapatsis; Hae Kwon Jeong; Chris J. Cornelius

doi:10.1016/j.memsci.2005.10.029

Fabrication and characterization of polyimide-zeolite L mixed matrix membranes for gas separations

Todd W. Pechar, Sangil Kim, Ben Vaughan, Eva Marand, Michael Tsapatsis, Hae Kwon Jeong, Chris J. Cornelius

Chemical Engineering and Materials Science

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

198 Scopus citations

Abstract

Mixed matrix membranes composed of zeolite L dispersed in a 6FDA-6FpDA-DABA polyimide matrix were fabricated and characterized for gas separation performance. The interfacial contact between the two phases relied on introducing amine functional groups on the zeolite surface and covalently linking them with carboxylic acid groups present along the polyimide backbone. While certain gas permeabilities in the membranes increased with the addition of zeolite L, overall these mixed matrix membranes did not offer substantial selectivity improvements. Separate gravimetric sorption measurements indicated that the sorption capacity of zeolites modified with silane coupling agents is substantially lower than the gas sorption in unmodified zeolites.

Original language	English (US)
Pages (from-to)	195-202
Number of pages	8
Journal	Journal of Membrane Science
Volume	277
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2005.10.029
State	Published - Jun 1 2006

Bibliographical note

Funding Information:
The authors would like to thank Steve McCartney for his help in preparing the SEM samples. We also gratefully acknowledge the National Science Foundation for financial support of this project with grant No. CTS-0107488.

Keywords

Gas separation
Mixed matrix membranes
Polymer membranes
Sorption
Zeolites

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title = "Fabrication and characterization of polyimide-zeolite L mixed matrix membranes for gas separations",

abstract = "Mixed matrix membranes composed of zeolite L dispersed in a 6FDA-6FpDA-DABA polyimide matrix were fabricated and characterized for gas separation performance. The interfacial contact between the two phases relied on introducing amine functional groups on the zeolite surface and covalently linking them with carboxylic acid groups present along the polyimide backbone. While certain gas permeabilities in the membranes increased with the addition of zeolite L, overall these mixed matrix membranes did not offer substantial selectivity improvements. Separate gravimetric sorption measurements indicated that the sorption capacity of zeolites modified with silane coupling agents is substantially lower than the gas sorption in unmodified zeolites.",

keywords = "Gas separation, Mixed matrix membranes, Polymer membranes, Sorption, Zeolites",

author = "Pechar, {Todd W.} and Sangil Kim and Ben Vaughan and Eva Marand and Michael Tsapatsis and Jeong, {Hae Kwon} and Cornelius, {Chris J.}",

note = "Funding Information: The authors would like to thank Steve McCartney for his help in preparing the SEM samples. We also gratefully acknowledge the National Science Foundation for financial support of this project with grant No. CTS-0107488.",

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AU - Pechar, Todd W.

AU - Kim, Sangil

AU - Vaughan, Ben

AU - Marand, Eva

AU - Tsapatsis, Michael

AU - Jeong, Hae Kwon

AU - Cornelius, Chris J.

N1 - Funding Information: The authors would like to thank Steve McCartney for his help in preparing the SEM samples. We also gratefully acknowledge the National Science Foundation for financial support of this project with grant No. CTS-0107488.

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N2 - Mixed matrix membranes composed of zeolite L dispersed in a 6FDA-6FpDA-DABA polyimide matrix were fabricated and characterized for gas separation performance. The interfacial contact between the two phases relied on introducing amine functional groups on the zeolite surface and covalently linking them with carboxylic acid groups present along the polyimide backbone. While certain gas permeabilities in the membranes increased with the addition of zeolite L, overall these mixed matrix membranes did not offer substantial selectivity improvements. Separate gravimetric sorption measurements indicated that the sorption capacity of zeolites modified with silane coupling agents is substantially lower than the gas sorption in unmodified zeolites.

AB - Mixed matrix membranes composed of zeolite L dispersed in a 6FDA-6FpDA-DABA polyimide matrix were fabricated and characterized for gas separation performance. The interfacial contact between the two phases relied on introducing amine functional groups on the zeolite surface and covalently linking them with carboxylic acid groups present along the polyimide backbone. While certain gas permeabilities in the membranes increased with the addition of zeolite L, overall these mixed matrix membranes did not offer substantial selectivity improvements. Separate gravimetric sorption measurements indicated that the sorption capacity of zeolites modified with silane coupling agents is substantially lower than the gas sorption in unmodified zeolites.

KW - Gas separation

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KW - Polymer membranes

KW - Sorption

KW - Zeolites

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Fabrication and characterization of polyimide-zeolite L mixed matrix membranes for gas separations

Abstract

Bibliographical note

Keywords

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