研究了MgNH改性的Mg(NH2) 2-2LiH体系的吸放氢性能及其机理.结果显示,MgNH的出现明显改变了样品的热分解行为,大部分氢能够在180℃以下放出,但总的放氢量从5.0wt％降低到了4.2wt％.MgNH部分替代Mg(NH2)2提高了样品的吸放氢平台压力,改善了滞后性能.结构研究表明,不同的化学成分导致了不同结构的吸放氢产物.原始Mg(NH2)2-2LiH样品的放氢产物主要为正交结构的亚氨基化物,而包含MgNH的样品的放氢产物为立方结构的亚氨基化物.吸氢后,Mg(NH2)2-2LiH样品能够回到起始反应物质,但包含MgNH的样品中可以明显观察到新的三元亚氨基化物Li2Mg2N3H3.
参考文献
| [1] | Zhitao Xiong;Guotao Wu;Jianjiang Hu;Ping Chen .Ternary Imides for Hydrogen Storage[J].Advanced Materials,2004(17):1522-1525. |
| [2] | W. Luo .(LiNH_2-MgH_2): a viable hydrogen storage system[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):284-287. |
| [3] | Zhitao Xiong;Jianjiang Hu;Guotao Wu .Thermodynamic and kinetic investigations of the hydrogen storage in the Li-Mg-N-H system[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):235-239. |
| [4] | 周素芹,程晓春,居学海,朱小红.储氢材料研究进展[J].材料科学与工程学报,2010(05):783-790. |
| [5] | 陈先华,耿玉晓,刘娟.镁及镁合金功能材料的研究进展[J].材料科学与工程学报,2013(01):148-152. |
| [6] | 刘永锋,李超,高明霞,潘洪革.高容量储氢材料的研究进展[J].自然杂志,2011(01):19-26. |
| [7] | Zhitao Xiong;Guotao Wu;Jianjiang Hu .Investigations on hydrogen storage over Li-Mg-N-H complex-the effect of compositional changes[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(1/2):190-194. |
| [8] | Liu, Y.;Li, B.;Tu, F.;Liang, C.;Gao, M.;Pan, H.;Wang, Q. .Correlation between composition and hydrogen storage behaviors of the Li_2NH-MgNH combination system[J].Dalton transactions: An international journal of inorganic chemistry,2011(32):8179-8186. |
| [9] | M. Aoki;T. Noritake;G. Kitahara .Dehydriding reaction of Mg(NH_2)_2-LiH system under hydrogen pressure[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2007(1/2):307-311. |
| [10] | Lai-Peng Ma;Hong-Bin Dai;Yan Liang .Catalytically Enhanced Hydrogen Storage Properties of Mg(NH2)2+2LiH Material by Graphite-Supported Ru Nanoparticles[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(46):18280-18285. |
| [11] | Yong Chen;Ping Wang;Chang Liu;Hui-Ming Cheng .Improved hydrogen storage performance of Li-Mg-N-H materials by optimizing composition and adding single-walled carbon nanotubes[J].International journal of hydrogen energy,2007(9):1262-1268. |
| [12] | R.R.Shahi;T.P.Yadav;M.A.Shaz;O.N.Srivastva .Studies on dehydrogenation characteristic of Mg(NH2)2/LiH mixture admixed with vanadium and vanadium based catalysts (V,V2O5,VCl3)[J].International Journal of Hydrogen Energy,2010,35:238-246. |
| [13] | L.P.Ma;P.Wang;H.K Dai;H.M.Cheng .Catalytically Enhanced Dehydrogenation of Li-Mg-N-H Hydrogen Storage Materials by Transition Metal Nitrides[J].Journal of Alloys and Compounds,2009,468:L21-L24. |
| [14] | J.J.Hu;Y.F.Liu;G.T.Wu;Z.T.Xiong Y.S.Chua P.Chen .Improvement of Hydrogen Storage Properties of the LbMg-N-H System by Adding LiBH4[J].CHEMISTRY OF MATERIALS,2008,20:4398-4402. |
| [15] | Pan, H.;Shi, S.;Liu, Y.;Li, B.;Yang, Y.;Gao, M. .Improved hydrogen storage kinetics of the Li-Mg-N-H system by addition of Mg(BH_4)_2[J].Dalton transactions: An international journal of inorganic chemistry,2013(11):3802-3811. |
| [16] | Y.F.Liu;J.J.Hu;Z.T.Xiong;G.T.Wu P.Chen .Improvement of the Hydrogen-Storage Performances of Li-MgN-H System[J].Journal of Materials Research,2007,22:1339-1345. |
| [17] | Jianhui Wang;Tao Liu;Guotao Wu .Potassium-Modified Mg(NH2)2/2 LiH System for Hydrogen Storage[J].Angewandte Chemie,2009(32):5828-5832. |
| [18] | Weifang Luo;Vitalie Stauila;Leonard E. Klebanoff .New insights into the mechanism of activation and hydrogen absorption of (2LiNH_2-MgH_2)[J].International journal of hydrogen energy,2012(8):6646-6652. |
| [19] | C.Li;Y.Liu;Y.Gu;M.Gao and H.Pan .Improved hydrogen-storage thermodynamics and kinetics for an RbF-doped Mg(NH2)2-2LiH system[J].Chemistry – An Asian Journal,2013,8:2136-2143. |
| [20] | H.Leng;T.Ichikawa;H.Fujii .Hydrogen Storage Properties of Li-Mg-N-H System with Different Ratios of LiH/Mg(NH2)2[J].Journal of Physical Chemistry B,2006,110:12964-12968. |
| [21] | Yongfeng Liu;Chu Liang;Zhijun Wei .Hydrogen storage reaction over a ternary imide Li2Mg2N3H3[J].Physical chemistry chemical physics: PCCP,2010(13):3108-3111. |
| [22] | Bo Li;Yongfeng Liu;Yu Zhang .Reaction Pathways for Hydrogen Uptake of the Li-Mg-N-Based Hydrogen Storage System[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2012(25):13551-13558. |
| [23] | J.J.Hu;G.T.Wu;Y.F.Liu;Z.T.Xiong P.Chen K.Murata K.Sakata G.Wolf .Hydrogen release from Mg (NH2) 2-MgH2 through mechanochemical reaction[J].Journal of Physical Chemistry B,2006,110:14688-14692. |
| [24] | Job Rijssenbeek;Yan Gao;Jonathan Hanson .Crystal structure determination and reaction pathway of amide-hydride mixtures[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):233-244. |
| [25] | J.J.Hu;Y.F.Liu;G.T.Wu;Z.T.Xiong P.Chen .Structural and compositional changes during hydrogenation/ dehydrogenation of the Li-Mg-N-H system[J].Journal of Physical Chemistry C,2007,111:18439-18443. |
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