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Article: Nano-structured MgH2 catalyzed by TiC nanoparticles for hydrogen storage
Title | Nano-structured MgH<inf>2</inf> catalyzed by TiC nanoparticles for hydrogen storage |
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Authors | |
Keywords | Nanoparticles Mechanical milling Microstructure Hydrogen storage MgH2 Absorption/desorption kinetics TiC |
Issue Date | 2011 |
Citation | Journal of Chemical Technology and Biotechnology, 2011, v. 86, n. 1, p. 69-74 How to Cite? |
Abstract | Background: Magnesium hydride is considered to be a promising hydrogen storage material because of its high gravimetric and volumetric storage capacities. However, its slow kinetics and high desorption temperature of > 300 °C limit practical applications. In this work, TiC nanoparticles were selected to modify the hydrogen storage properties of MgH2. Composite mixtures (MgH2 + TiC) were prepared using both cryogenic milling and high-energy ball milling. RESULTS: The resulting morphology and crystallite structure of the composites were identified by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The milled samples show good mixing of the hydride and carbide particles, with MgH2 particles around 0.09-1 μm and TiC particles 10-20 nm. The (MgH2 + TiC) composites consist of γ-MgH2, β-MgH2 and TiC. MgH2 nano-crystallites of 25 nm were formed after cryomilling. Thermogravimetry reveals that the composites release ~6.5 mass % hydrogen from 190-400 °C at a heating rate of 10 °C min-1 under He flow, with the onset and peak temperatures at 190 and 280 °C, respectively, for the (MgH2 + TiC) after 8 h cryomilling and 60 h ball milling. CONCLUSION: Results indicate that TiC is an effective catalyst for hydrogen desorption of MgH2. © 2010 Society of Chemical Industry. |
Persistent Identifier | http://hdl.handle.net/10722/295120 |
ISSN | 2023 Impact Factor: 2.8 2023 SCImago Journal Rankings: 0.624 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Tian, Mi | - |
dc.contributor.author | Shang, Congxiao | - |
dc.date.accessioned | 2021-01-05T04:59:06Z | - |
dc.date.available | 2021-01-05T04:59:06Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Journal of Chemical Technology and Biotechnology, 2011, v. 86, n. 1, p. 69-74 | - |
dc.identifier.issn | 0268-2575 | - |
dc.identifier.uri | http://hdl.handle.net/10722/295120 | - |
dc.description.abstract | Background: Magnesium hydride is considered to be a promising hydrogen storage material because of its high gravimetric and volumetric storage capacities. However, its slow kinetics and high desorption temperature of > 300 °C limit practical applications. In this work, TiC nanoparticles were selected to modify the hydrogen storage properties of MgH2. Composite mixtures (MgH2 + TiC) were prepared using both cryogenic milling and high-energy ball milling. RESULTS: The resulting morphology and crystallite structure of the composites were identified by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The milled samples show good mixing of the hydride and carbide particles, with MgH2 particles around 0.09-1 μm and TiC particles 10-20 nm. The (MgH2 + TiC) composites consist of γ-MgH2, β-MgH2 and TiC. MgH2 nano-crystallites of 25 nm were formed after cryomilling. Thermogravimetry reveals that the composites release ~6.5 mass % hydrogen from 190-400 °C at a heating rate of 10 °C min-1 under He flow, with the onset and peak temperatures at 190 and 280 °C, respectively, for the (MgH2 + TiC) after 8 h cryomilling and 60 h ball milling. CONCLUSION: Results indicate that TiC is an effective catalyst for hydrogen desorption of MgH2. © 2010 Society of Chemical Industry. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Chemical Technology and Biotechnology | - |
dc.subject | Nanoparticles | - |
dc.subject | Mechanical milling | - |
dc.subject | Microstructure | - |
dc.subject | Hydrogen storage | - |
dc.subject | MgH2 | - |
dc.subject | Absorption/desorption kinetics | - |
dc.subject | TiC | - |
dc.title | Nano-structured MgH<inf>2</inf> catalyzed by TiC nanoparticles for hydrogen storage | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/jctb.2479 | - |
dc.identifier.scopus | eid_2-s2.0-78650048610 | - |
dc.identifier.volume | 86 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 69 | - |
dc.identifier.epage | 74 | - |
dc.identifier.eissn | 1097-4660 | - |
dc.identifier.isi | WOS:000286291700011 | - |
dc.identifier.issnl | 0268-2575 | - |