Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 142, Issue -, Pages 215-226Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2014.12.009
Keywords
Ammonia; Adsorbent; Capacity; Dynamic adsorption; Isotherm; Super activated carbon
Categories
Funding
- EERE (Energy Efficiency and Renewable Energy)
- FCTO (Fuel Cell Technologies Office) of the U.S. Department of Energy [DE-FC36-09GO19006]
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The application of chemical hydrides (e.g. ammonia borane) and amide-based hydrogen storage materials would benefit from an effective means to remove ammonia, which is an impurity that is detrimental to the performance of a PEM fuel cell. One option is to adsorb ammonia on a sorbent with high capacity that would also be regenerable. Such a sorbent was developed by impregnating super activated carbon with metal chlorides (MgCl2, ZnCl2, MnCl2). The sorbent was characterized through static and dynamic adsorption experiments. It was shown to have a good cyclic stability. The filter weight, volume and pressure drop appears reasonable for an onboard vehicle application when it would be replaced/regenerated every 1800 miles, similar to an oil change. (C) 2015 Published by Elsevier B.V.
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