Dehydrogenation reactions of 2NaBH4 + MgH2 system
作者： D. Pottmaier , C. Pistidda , E. Groppo , S. Bordiga , G. Spoto
DOI: 10.1016/J.IJHYDENE.2011.01.059
关键词:
摘要: Abstract Reactive Hydride Composites (RHCs), ball-milled composites of two or more different hydrides, are suggested as an alternative for solid state hydrogen storage. In this work, dehydrogenation 2NaBH 4 + MgH 2 system under vacuum was investigated using complementary characterization techniques. At first, thermal programmed desorption as-milled composite and single compounds used to identify the temperature range release. RHC samples annealed at various temperatures up 500 °C were characterized by X-ray diffraction, infrared spectroscopy scanning electron microscopy. It was found that reaction is likely proceed follows: (>250 °C) → 2NaBH + 1/2MgH + 1/2Mg + 1/2H (>350 °C) ↔ 3/2NaBH + 1/4MgB + 1/2NaH + 3/4Mg + 7/4H (>450 °C) → 2Na + B + 1/2Mg + 1/2MgB + 5H . In addition, presence NaMgH 3 phase suggests occurrence secondary reactions.
elsevier.com
sci-hub.se 参考文章(22)
Ottorin Veneri, Hydrogen as Future Energy Carrier Hydrogen Fuel Cells for Road Vehicles. pp. 33- 70 ,(2011) , 10.1007/978-0-85729-136-3_2
GA Olah, A Goeppert, GKS Prakash, Hydrogen as a future energy carrier Wiley-VCH Verlag GmbH & Co. KGaA. ,(2008) , 10.1002/9783527622894
S Garroni, C Pistidda, M Brunelli, GBM Vaughan, S Surinach, MD Baró, None, Hydrogen desorption mechanism of 2NaBH4 + MgH2 composite prepared by high-energy ball milling Scripta Materialia. ,vol. 60, pp. 1129- 1132 ,(2009) , 10.1016/J.SCRIPTAMAT.2009.02.059
J.A.A. Ketelaar, C.J.H. Schutte, The borohydride ion (BH4−) in a face-centred cubic alkali-halide lattice Spectrochimica Acta. ,vol. 17, pp. 1240- 1243 ,(1961) , 10.1016/0371-1951(61)80046-5
A Bouamrane, C de Brauer, J.-P Soulié, J.M Létoffé, J.P Bastide, Standard enthalpies of formation of sodium–magnesium hydride and hydridofluorides NaMgH3, NaMgH2F and NaMgF2H Thermochimica Acta. ,vol. 326, pp. 37- 41 ,(1999) , 10.1016/S0040-6031(98)00610-8
Ping Chen, Zhitao Xiong, Jizhong Luo, Jianyi Lin, Kuang Lee Tan, Interaction of hydrogen with metal nitrides and imides Nature. ,vol. 420, pp. 302- 304 ,(2002) , 10.1038/NATURE01210
A. Züttel, P. Wenger, S. Rentsch, P. Sudan, Ph. Mauron, Ch. Emmenegger, LiBH4 a new hydrogen storage material Journal of Power Sources. ,vol. 118, pp. 1- 7 ,(2003) , 10.1016/S0378-7753(03)00054-5
Borislav Bogdanović, Manfred Schwickardi, Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials Journal of Alloys and Compounds. ,vol. 253, pp. 1- 9 ,(1997) , 10.1016/S0925-8388(96)03049-6
R.A. Varin, Ch. Chiu, Structural stability of sodium borohydride (NaBH4) during controlled mechanical milling Journal of Alloys and Compounds. ,vol. 397, pp. 276- 281 ,(2005) , 10.1016/J.JALLCOM.2004.12.047
K. Komiya, N. Morisaku, R. Rong, Y. Takahashi, Y. Shinzato, H. Yukawa, M. Morinaga, Synthesis and decomposition of perovskite-type hydrides, MMgH3 (M = Na, K, Rb) Journal of Alloys and Compounds. ,vol. 453, pp. 157- 160 ,(2008) , 10.1016/J.JALLCOM.2006.11.116