Evolution of hydrogen from magnesium alloy scraps in citric acid-added seawater without catalyst

Evolution of hydrogen from magnesium alloy scraps in citric acid-added seawater without catalyst

This work employed a mixture of low-grade Mg scraps (LGMS) and citric acid-added seawater to generate hydrogen gas. Metal catalyst was not required for accelerating the reaction of H 2 generation in the Mg scraps/citric acid solution. LGMS in 20 wt% citric acid-added seawater could produce substanti...

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Veröffentlicht in:International journal of hydrogen energy 2009-08, Vol.34 (15), p.6137-6142
Hauptverfasser: Uan, Jun-Yen, Yu, Shih-Hao, Lin, Meng-Chang, Chen, Li-Fan, Lin, Heng-I.
Format: Artikel
Sprache:eng
Schlagworte:
Alternative fuels. Production and utilization
Applied sciences
Catalysts
Citric acid
Energy
Evolution
Exact sciences and technology
Fuels
Hydrogen
Hydrogen generation
Magnesium
Magnesium scraps
Metal scrap
Re-use
Reactors
Scrap
Sea water
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Beschreibung
Zusammenfassung:This work employed a mixture of low-grade Mg scraps (LGMS) and citric acid-added seawater to generate hydrogen gas. Metal catalyst was not required for accelerating the reaction of H 2 generation in the Mg scraps/citric acid solution. LGMS in 20 wt% citric acid-added seawater could produce substantially higher H 2 volume than the LGMS in 5 wt% citric acid-added seawater. Purity of the generated H 2 was about 99% (after dehumidification). By filling H 2-production reactor every 30 min with fresh seawater to which citric acid has been added, ∼70 l of hydrogen could be produced in 100 min.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2009.05.133