Effect of titanium based complex catalyst and carbon nanotubes on hydrogen storage performance of magnesium
Article
Article Title | Effect of titanium based complex catalyst and carbon nanotubes on hydrogen storage performance of magnesium |
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ERA Journal ID | 201482 |
Article Category | Article |
Authors | Kadri, Atikah (Author), Jia, Yi (Author), Chen, Zhigang (Author) and Yao, XiangDong (Author) |
Journal Title | Science China Chemistry |
Journal Citation | 56 (4), pp. 451-458 |
Number of Pages | 8 |
Year | 2013 |
Place of Publication | China |
ISSN | 1674-7291 |
1869-1870 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11426-013-4856-2 |
Web Address (URL) | http://download.springer.com/static/pdf/114/art%253A10.1007%252Fs11426-013-4856-2.pdf?originUrl=http%3A%2F%2Flink.springer.com%2Farticle%2F10.1007%2Fs11426-013-4856-2&token2=exp=1496900492~acl=%2Fstatic%2Fpdf%2F114%2Fart%25253A10.1007%25252Fs11426-013-485 |
Abstract | Mg (MgH2)-based composites, using carbon nanotubes (CNTs) and pre-synthesized titanium based complex (TCat) as the catalysts, were prepared by high energy ball milling technique. The use of both catalysts demonstrated markedly improved the hydrogen storage performance, e.g. a significant increase of hydrogen release rate and decrease of desorption temperature. The synthesized composites can absorb almost 6 wt% of hydrogen within 3 min at 200 C and desorb 6 wt% hydrogen in 10 min at 310 C. The influence of CNTs and TCat on desorption temperature was also investigated by using temperature programmed desorption (TPD). The TPD results reveal that the peak desorption temperature and the onset temperature can be lowered by 109 C and 155 C, respectively, compared to the non-catalyzed MgH2. The reaction enthalpy and entropy of hydrogen desorption for the synthesized MgH2-based composites are calculated by the van't Hoff analysis to be 73.1 kJ/mol H2 and 130.2 J/mol H2 K, respectively. |
Keywords | carbon nanotubes; hydrogen storage; magnesium hydride; mechanical milling; titanium compound catalysts; desorption temperatures; high-energy ball milling; hydrogen desorption; magnesium hydride; Mechanical milling; Reaction enthalpies; Storage performance; Van't Hoff Analysis; chemical products generalls; chemical operations; nanotechnology; materials Science; titanium and alloys; metallurgy and metallography; gas fuels; magnesium and alloys |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
519999. Other physical sciences not elsewhere classified | |
340399. Macromolecular and materials chemistry not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q417v/effect-of-titanium-based-complex-catalyst-and-carbon-nanotubes-on-hydrogen-storage-performance-of-magnesium
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