Hydrogenation characteristics of Mg–TiO2 (rutile) composite

Wang, P; Wang, A.M; Zhang, H.F; Ding, B.Z.; Hu, Z. Q.

doi:10.1016/s0925-8388(00)01188-9

Cited by 82 publications

(24 citation statements)

References 24 publications

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“…However, the practical application of magnesium as a hydrogen storage medium is greatly hindered by its high desorption temperature and slow absorption/desorption kinetics. Various additives with potential catalytic effect for H 2 absorption/desorption in Mg, including transition metals, [9][10][11][12][13][14] H-storage alloys, 15 metal oxides, [16][17][18] metal hydrides, 19 and graphite, [20][21][22][23][24] have been utilized to prepare Mg-based composites by mechanical milling.…”

Section: Introductionmentioning

confidence: 99%

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.

Wang

Yao

et al. 2006

ChemInform

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The microstructure and absorption/desorption characteristics of composite MgH 2 and 5 wt % as-prepared single-walled carbon nanotubes (MgH 2 -5ap) obtained by the mechanical grinding method were investigated. Experimental results show that the MgH 2 -5ap sample exhibits faster absorption kinetics and relatively lower desorption temperature than pure MgH 2 or MgH 2 -purified single-walled carbon nanotube composite. Storage capacities of 6.0 and 4.2 wt % hydrogen for the MgH 2 -5ap composite were achieved in 60 min at 423 and 373 K, respectively. Furthermore, its desorption temperature was reduced by 70 K due to the introduction of as-prepared single-walled carbon nanotubes (SWNTs). In addition, the different effects of SWNTs and metallic catalysts contained in the as-prepared SWNTs were also investigated and a hydrogenation mechanism was proposed. It is suggested that metallic particles may be mainly responsible for the improvement of the hydrogen absorption kinetics, and SWNTs for the enhancement of hydrogen absorption capacity of MgH 2 .

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Section: Introductionmentioning

confidence: 99%

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.

Wang

Yao

et al. 2006

ChemInform

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“…[1][2][3][4]), the second is Mg-intermetallic compound, for example, Mg-Mg 2 Ni, Mg-LaNi 5 , Mg-TiFe, Mg-metal oxides (MnO 2 , TiO 2 , NiO, etc.) [5][6][7], the third type is Mg-organic substance, e.g. Mg-tetrahydrofuran, Mgbenzene and Mg-cyclohexane, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the hydriding kinetic mechanism in the MgH2/Cr2O3-nanocomposite

Kuangdi

Chou

et al. 2005

Intermetallics

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“…The addition of some metal oxides could bring about a favorable change in the hydrogenation performance of the material. Wang et al(2000) found that the addition of nanostructure TiO 2 powder resulted in markedly improved hydrogenation performance of Mg. Oelerich et al(2001) Song et al(2002) showed the effects of the addition of Cr 2 O 3 , Al 2 O 3 , CeO 2 on the hydrogenation properties of Mg powder.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites

Wang

Chen³

et al. 2005

J Zheijang Univ Sci B

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Mg 2 Ni 0.8 Cr 0.2 -x wt.% CoO/Al 2 O 3 (x=0.5, 1, 2 and 3) composites were prepared by mechanically milling sintered Mg 2 Ni 0.8 Cr 0.2 alloy and CoO/Al 2 O 3 compound for 45 h. The addition of CoO/Al 2 O 3 compound resulted in the good kinetics properties of hydriding/dehydriding reaction of the composites. The composite with 1.0 wt.% CoO/Al 2 O 3 catalyst could reach the maximum hydrogen absorption capacity (2.9 wt.%) within 5 min at 393 K under H 2 pressure of 4 MPa, and can desorb rapidly at 493 K. The decomposition and synthesis of hydrogen molecule on Mg 2 Ni 0.8 Cr 0.2 alloy surface was promoted by addition of CoO/Al 2 O 3 catalyst. In addition, the formation of metallic Ni particles, strain and defects during the ball milling process also resulted in the improved hydrogenation performance of Mg 2 Ni-based alloys.

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Hydrogenation characteristics of Mg–TiO2 (rutile) composite

Cited by 82 publications

References 24 publications

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.

Investigation of the hydriding kinetic mechanism in the MgH2/Cr2O3-nanocomposite

Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites

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Hydrogenation characteristics of Mg–TiO2 (rutile) composite

Cited by 82 publications

References 24 publications

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH2.

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH2.

Investigation of the hydriding kinetic mechanism in the MgH2/Cr2O3-nanocomposite

Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites

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Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.

Effects of SWNT and Metallic Catalyst on Hydrogen Absorption/Desorption Performance of MgH₂.