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Title: Macrovoid-free high performance polybenzimidazole hollow fiber membranes for elevated temperature H2/CO2 separations

Abstract

Thermally robust membranes are required for H2 production and carbon capture from hydrocarbon fuel derived synthesis (syn) gas. Polybenzimidaole (PBI) materials have exceptional thermal, chemical and mechanical characteristics and high H2 perm-selectivity for efficient syngas separations at process relevant conditions. The large gas volumes processed mandate the use of a high-throughput, small footprint hollow fiber membrane (HFM) platform. Here in this work, an industrially attractive spinning protocol is developed to fabricate PBI HFMs with unprecedented H2/CO2 separation performance. A unique dope composition incorporating an acetonitrile diluent is discovered enabling asymmetric macro-void free PBI HFM fabrication using a water coagulant. The influences of dope viscosity, coagulant chemistry, and air gap on HFM morphology are evaluated. Elevated temperature (up to 350 °C) H2 permeances of 400 GPU with H2/CO2 selectivities > 20 are achieved. This unprecedented separation performance is a ground breaking achievement at temperatures traditionally considered out-of-reach for polymeric membranes.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management; USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1659171
Alternate Identifier(s):
OSTI ID: 1670481
Report Number(s):
LA-UR-18-27896
Journal ID: ISSN 0360-3199
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Hydrogen Energy
Additional Journal Information:
Journal Volume: 45; Journal Issue: 51; Journal ID: ISSN 0360-3199
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; Polybenzimidazole; Hollow fiber membrane; Pre-combustion carbon capture; Synthesis gas; Energy Sciences; Material Science; Hydrogen separation membrane; IGCC

Citation Formats

Singh, Rajinder Pal, Dahe, Ganpat J., Dudeck, Kevin Wade, and Berchtold, Kathryn A. Macrovoid-free high performance polybenzimidazole hollow fiber membranes for elevated temperature H2/CO2 separations. United States: N. p., 2020. Web. doi:10.1016/j.ijhydene.2020.07.091.
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Singh, Rajinder Pal, Dahe, Ganpat J., Dudeck, Kevin Wade, & Berchtold, Kathryn A. Macrovoid-free high performance polybenzimidazole hollow fiber membranes for elevated temperature H2/CO2 separations. United States. https://doi.org/10.1016/j.ijhydene.2020.07.091
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Singh, Rajinder Pal, Dahe, Ganpat J., Dudeck, Kevin Wade, and Berchtold, Kathryn A. Thu . "Macrovoid-free high performance polybenzimidazole hollow fiber membranes for elevated temperature H2/CO2 separations". United States. https://doi.org/10.1016/j.ijhydene.2020.07.091. https://www.osti.gov/servlets/purl/1659171.
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@article{osti_1659171,
title = {Macrovoid-free high performance polybenzimidazole hollow fiber membranes for elevated temperature H2/CO2 separations},
author = {Singh, Rajinder Pal and Dahe, Ganpat J. and Dudeck, Kevin Wade and Berchtold, Kathryn A.},
abstractNote = {Thermally robust membranes are required for H2 production and carbon capture from hydrocarbon fuel derived synthesis (syn) gas. Polybenzimidaole (PBI) materials have exceptional thermal, chemical and mechanical characteristics and high H2 perm-selectivity for efficient syngas separations at process relevant conditions. The large gas volumes processed mandate the use of a high-throughput, small footprint hollow fiber membrane (HFM) platform. Here in this work, an industrially attractive spinning protocol is developed to fabricate PBI HFMs with unprecedented H2/CO2 separation performance. A unique dope composition incorporating an acetonitrile diluent is discovered enabling asymmetric macro-void free PBI HFM fabrication using a water coagulant. The influences of dope viscosity, coagulant chemistry, and air gap on HFM morphology are evaluated. Elevated temperature (up to 350 °C) H2 permeances of 400 GPU with H2/CO2 selectivities > 20 are achieved. This unprecedented separation performance is a ground breaking achievement at temperatures traditionally considered out-of-reach for polymeric membranes.},
doi = {10.1016/j.ijhydene.2020.07.091},
journal = {International Journal of Hydrogen Energy},
number = 51,
volume = 45,
place = {United States},
year = {Thu Aug 20 00:00:00 EDT 2020},
month = {Thu Aug 20 00:00:00 EDT 2020}
}
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Publisher's Version of Record
https://doi.org/10.1016/j.ijhydene.2020.07.091
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