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Separations
Efficiency of hydrogen recovery from reformate with a polymer electrolyte hydrogen pump
Article first published online: 29 SEP 2010
DOI: 10.1002/aic.12406
Copyright © 2010 American Institute of Chemical Engineers (AIChE)
Additional Information
How to Cite
Abdulla, A., Laney, K., Padilla, M., Sundaresan, S. and Benziger, J. (2011), Efficiency of hydrogen recovery from reformate with a polymer electrolyte hydrogen pump. AIChE J., 57: 1767–1779. doi: 10.1002/aic.12406
Publication History
- Issue published online: 9 JUN 2011
- Article first published online: 29 SEP 2010
- Accepted manuscript online: 23 AUG 2010 10:37AM EST
- Manuscript Revised: 6 AUG 2010
- Manuscript Received: 8 FEB 2010
Funded by
- NSF. Grant Number: CBET 0754715
- Alder Senior Thesis fund administered by Princeton University's School of Engineering and Applied Sciences
- Princeton University Grand Challenge
- NSF(DMR)
- Abstract
- Article
- References
- Cited By
Keywords:
- hydrogen;
- reformate purification;
- electrochemical separations;
- carbon dioxide removal
Abstract
The energy efficiency of hydrogen recovery from mixtures of CO2, H2O, and H2 by a polymer electrolyte hydrogen pump (PEHP) has been evaluated. The PEHP pumps protons across the polymer electrolyte, producing >99.99% pure H2 and a concentrated CO2 stream. Single stage PEHP experiments recovered 65% of the hydrogen with an energy efficiency of 50%. The energy efficiency is limited by hydrogen mass transport across the porous gas diffusion electrode. The mass transport resistance for hydrogen increases as H2 is depleted from the CO2/H2 mixture by the PEHP. Analysis shows that a multistage PEHP with fixed applied potential difference can recover >90% of the hydrogen with an energy efficiency of 75%, whereas a novel multistage PEHP design with a programmed voltage profile can achieve >90% energy efficiency with >98% hydrogen recovery. © 2010 American Institute of Chemical Engineers AIChE J, 2011