Hydrogen purity: Difference between revisions
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#REDIRECT [[Hydrogen purification]] |
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'''Hydrogen purity''' or hydrogen quality is a term to describe the lack of impurities in [[hydrogen]] as a [[fuel]]. The purity requirement varies with the application, for example a H<sub>2</sub> [[Internal combustion engine|ICE]] requires low hydrogen purity were a hydrogen fuel cell requires high hydrogen purity to prevent [[catalyst poisoning]]<ref>[http://www.nrel.gov/docs/fy07osti/41541.pdf 2007-DOE-Hydrogen Fuel Quality]</ref>. |
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==High purity hydrogen== |
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In the first generation of [[fuel cell]]s [[catalyst]]s like [[palladium]], [[ruthenium]] and [[platinum]] are used in combination with [[hydrogen production]] from hydrocarbons which results in performance degradation. The catalyst poisoning induced by [[carbon monoxide]], [[formic acid]], or [[formaldehyde]] can be reversed with a high purity hydrogen stream. [[Sulfur dioxide]] is problematic<ref>[http://www.ottawapolicyresearch.ca/OPRA_Brief_H2PurityDetectionMonitoring.pdf Issues in hydrogen purity detection and monitoring]</ref> |
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==References== |
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{{reflist}} |
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==External links== |
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*[http://www.fuelcellstandards.com/H2Quality.ppt H2 Quality] |
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*[http://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/fp_workshop_smith.pdf 2004-Hydrogen Purity Standard] |
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*[http://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/fuel_purity_notes.pdf 2004-Fuel Purity Specifications Workshop] |
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[[Category:Hydrogen]] |
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Latest revision as of 22:36, 11 April 2024
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