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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.3 P.208~212

http://doi.org/10.1631/jzus.2005.B0208


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


Author(s):  WANG Xiu-li, TU Jiang-ping, CHEN Chang-pin, ZHANG Xiao-bin, ZHAO Xin-bing

Affiliation(s):  Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   tujp@zju.edu.cn

Key Words:  Mg2Ni-based composite, Hydrogen storage, Ball milling, Catalyst, Hydriding/dehydriding kinetics


WANG Xiu-li, TU Jiang-ping, CHEN Chang-pin, ZHANG Xiao-bin, ZHAO Xin-bing. Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites[J]. Journal of Zhejiang University Science B, 2005, 6(3): 208~212.

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author="WANG Xiu-li, TU Jiang-ping, CHEN Chang-pin, ZHANG Xiao-bin, ZHAO Xin-bing",
journal="Journal of Zhejiang University Science B",
volume="6",
number="3",
pages="208~212",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.B0208"
}

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%T Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites
%A WANG Xiu-li
%A TU Jiang-ping
%A CHEN Chang-pin
%A ZHANG Xiao-bin
%A ZHAO Xin-bing
%J Journal of Zhejiang University SCIENCE B
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%N 3
%P 208~212
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B0208

TY - JOUR
T1 - Hydrogenation properties of mechanically milled Mg2Ni0.8Cr0.2-CoO/Al2O3 composites
A1 - WANG Xiu-li
A1 - TU Jiang-ping
A1 - CHEN Chang-pin
A1 - ZHANG Xiao-bin
A1 - ZHAO Xin-bing
J0 - Journal of Zhejiang University Science B
VL - 6
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SP - 208
EP - 212
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B0208


Abstract: 
Mg2Ni0.8Cr0.2-x wt.% CoO/Al2O3 (x=0.5, 1, 2 and 3) composites were prepared by mechanically milling sintered Mg2Ni0.8Cr0.2 alloy and CoO/Al2O3 compound for 45 h. The addition of CoO/Al2O3 compound resulted in the good kinetics properties of hydriding/dehydriding reaction of the composites. The composite with 1.0 wt.% CoO/Al2O3 catalyst could reach the maximum hydrogen absorption capacity (2.9 wt.%) within 5 min at 393 K under H2 pressure of 4 MPa, and can desorb rapidly at 493 K. The decomposition and synthesis of hydrogen molecule on Mg2Ni0.8Cr0.2 alloy surface was promoted by addition of CoO/Al2O3 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 Mg2Ni-based alloys.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[2] Cong, Y., Tin, K.C., Huang, N.B., Xu, C.H., Zhang, T., 2000. Preparation of ultrafine Cu-ZnO-ZrO2 catalysts and CO2 hydrogenation performance. Chinese Journal of Catalysis, 21(3):247-250 (in Chinese).

[3] Lee, D.S., Kwon, I.K., Bobet, J.L., Song, M.Y., 2004. Effects on the H2-sorption properties of Mg of Co (with various sizes) and CoO addition by reactive grinding. J. Alloys and Comps., 366:279-288.

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[5] Oelerich, W., Klassen, T., Bormann, R., 2001. Metal oxides as catalysts for improved hydrogen sorption in nanocrystalline Mg-based materials. J. Alloys Comp., 315:237-242.

[6] Orimo, S., Fujii, H., Ikeda, K., 1997. Notable hydriding properties of a nanostructured composite material of the Mg2Ni-H system synthesized by reactive mechanical grinding. Acta Mater., 45(1):331-341.

[7] Pedersen, A.S., Larsen, B., 1993. The storage of industrially pure hydrogen in magnesium. Int. J. Hydrogen Energy, 18:297-300.

[8] Reilly, J.J., Wiswall, R.H., 1968. The reaction of hydrogen with alloys of magnesium and nickel and the formation of Mg2NiH4. Inorg. Chem., 7:2254-2256.

[9] Song, M.Y., Bobet, J.L., Darriet, B., 2002. Improvement in hydrogen sorption properties of Mg by reactive mechanical grinding with Cr2O3, Al2O3 and CeO2. J. Alloys Comp., 340:256-262.

[10] Spassov, T., Köster, U., 1998. Thermal stability and hydriding properties of nanocrystalline melt-spun Mg63Ni30Y7 alloy. J. Alloys Comp., 279:279-286.

[11] Tsushio, Y., Enoki, H., Akiba, E., 1998. Hydrogenation properties of MgNi0.86M10.03 (M1=Cr, Fe, Co, Mn) alloy. J. Alloys Comp., 281:301-305.

[12] Wang, P., Wang, A.M., Zhang, H.F., Ding, B.Z., Hu, Z.Q., 2000. Hydrogentation characteristics of Mg-TiO2 (rutile) composite. J. Alloys Comp., 313:218-223.

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[14] Zhu, H.J., Li, H.B., Tong, J.H., Sheng, S.S., Yang, W.S., Lin, L.W., 2002. Oxidative dehydrogenation of propane over vanadia catalysts supported on TiO2-ZrO2 composite oxide. Chinese Journal of Catalysis, 23(5):391-392 (in Chinese).

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