Seeking an ammonia selective membrane based on nanostructured sulfonated block copolymers

William A. Phillip; Eddie Martono; Liang Chen; Marc A. Hillmyer; Edward L. Cussler

doi:10.1016/j.memsci.2009.03.013

Seeking an ammonia selective membrane based on nanostructured sulfonated block copolymers

William A. Phillip, Eddie Martono, Liang Chen, Marc A. Hillmyer, Edward L. Cussler

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33 Scopus citations

Abstract

A membrane containing 7-23 nm polystyrene sulfonate domains was prepared using a reactive block polymer precursor and evaluated for its ammonia selectivity. The ammonia permeability is over 20.1 × 10^-17 kmol m/(m² s Pa) (600 barrers) at 25 °C and 2 × 10⁵ Pa (2 bar) pressure; the selectivity for a mixed gas feed containing ammonia and nitrogen is over 90, about the same selectivity that is inferred from the pure gas feeds (the "ideal selectivity"). Variations in the sulfonated phase domain size and the degree of crosslinking in the membrane give permeabilities which increase with the average ammonia pressure and retain their selectivity at higher pressure. The results may have value in the separation of ammonia produced by the Haber-Bosch process.

Original language	English (US)
Pages (from-to)	39-46
Number of pages	8
Journal	Journal of Membrane Science
Volume	337
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2009.03.013
State	Published - Jul 15 2009

Bibliographical note

Funding Information:
This work was largely supported by the US Air Force Office of Scientific Research (grant F49620-01-1-0333) and the US Department of Energy Grant 5-35908. This work was supported partially by the MRSEC Program of the National Science Foundation under Award Number DMR-0819885.

Keywords

Ammonia
Block copolymers
Gas separation
Plasticization

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title = "Seeking an ammonia selective membrane based on nanostructured sulfonated block copolymers",

abstract = "A membrane containing 7-23 nm polystyrene sulfonate domains was prepared using a reactive block polymer precursor and evaluated for its ammonia selectivity. The ammonia permeability is over 20.1 × 10-17 kmol m/(m2 s Pa) (600 barrers) at 25 °C and 2 × 105 Pa (2 bar) pressure; the selectivity for a mixed gas feed containing ammonia and nitrogen is over 90, about the same selectivity that is inferred from the pure gas feeds (the {"}ideal selectivity{"}). Variations in the sulfonated phase domain size and the degree of crosslinking in the membrane give permeabilities which increase with the average ammonia pressure and retain their selectivity at higher pressure. The results may have value in the separation of ammonia produced by the Haber-Bosch process.",

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note = "Funding Information: This work was largely supported by the US Air Force Office of Scientific Research (grant F49620-01-1-0333) and the US Department of Energy Grant 5-35908. This work was supported partially by the MRSEC Program of the National Science Foundation under Award Number DMR-0819885. ",

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AU - Phillip, William A.

AU - Martono, Eddie

AU - Chen, Liang

AU - Hillmyer, Marc A.

AU - Cussler, Edward L.

N1 - Funding Information: This work was largely supported by the US Air Force Office of Scientific Research (grant F49620-01-1-0333) and the US Department of Energy Grant 5-35908. This work was supported partially by the MRSEC Program of the National Science Foundation under Award Number DMR-0819885.

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N2 - A membrane containing 7-23 nm polystyrene sulfonate domains was prepared using a reactive block polymer precursor and evaluated for its ammonia selectivity. The ammonia permeability is over 20.1 × 10-17 kmol m/(m2 s Pa) (600 barrers) at 25 °C and 2 × 105 Pa (2 bar) pressure; the selectivity for a mixed gas feed containing ammonia and nitrogen is over 90, about the same selectivity that is inferred from the pure gas feeds (the "ideal selectivity"). Variations in the sulfonated phase domain size and the degree of crosslinking in the membrane give permeabilities which increase with the average ammonia pressure and retain their selectivity at higher pressure. The results may have value in the separation of ammonia produced by the Haber-Bosch process.

AB - A membrane containing 7-23 nm polystyrene sulfonate domains was prepared using a reactive block polymer precursor and evaluated for its ammonia selectivity. The ammonia permeability is over 20.1 × 10-17 kmol m/(m2 s Pa) (600 barrers) at 25 °C and 2 × 105 Pa (2 bar) pressure; the selectivity for a mixed gas feed containing ammonia and nitrogen is over 90, about the same selectivity that is inferred from the pure gas feeds (the "ideal selectivity"). Variations in the sulfonated phase domain size and the degree of crosslinking in the membrane give permeabilities which increase with the average ammonia pressure and retain their selectivity at higher pressure. The results may have value in the separation of ammonia produced by the Haber-Bosch process.

KW - Ammonia

KW - Block copolymers

KW - Gas separation

KW - Plasticization

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Seeking an ammonia selective membrane based on nanostructured sulfonated block copolymers

Abstract

Bibliographical note

Keywords

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