Hydrogen generation from hydrolysis of activated aluminum composites in tap water

Fei Xiao, Yanpei Guo, Jianmin Li and Rongjie Yang

Energy, 2018, vol. 157, issue C, 608-614

Abstract: Activated aluminum composites Al-X(X = Sn, Bi, Bi-Sn) were prepared by high-energy milling, and characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Their hydrogen generation was systematically investigated in tap water. The experimental results suggest that the ternary Al-Bi-Sn composites show the better hydrolysis properties than binary composites Al-Bi and Al-Sn owing to the synergistic effect of metal Bi and Sn. The 3 h milled Al-7.5%Bi-2.5%Sn composite exhibits the highest hydrogen conversion yield with the maximum hydrogen generation rate of 9.5 mL s−1 g−1 at 35 °C. In addition, the effect of initial reaction temperature and water quality on the hydrolysis properties, the methods of protecting the activity of activated Al composites are discussed as well.

Keywords: Hydrogen generation; High-energy milling; Aluminum; Synergistic effect (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:157:y:2018:i:c:p:608-614

DOI: 10.1016/j.energy.2018.05.201

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