采用机械球磨法制备AlLi/NaBH4/Ni混合体系.水解测试分析表明,固态Al-Li-Ni/NaBH4混合物具有良好的析氢性能.Al- 10％Li- 10％Ni/NaBH4(量比为3∶1)混合物在333 K时的产氢值达1540 mL/g,产氢效率为96％. 通过XRD、SEM等分析Ni掺杂改善其水解析氢机制,金属Ni的产物Ni2B对Al合金和NaBH4的水解具有双重催化作用.Ni2B沉积在Al表面可作为微型腐蚀电池的阴极并促进铝的阳极腐蚀.另外,Ni2B/Al(OH)3对NaBH4的水解动力学具有很好的催化作用.连续水解测试结果显示:水解产物Al(OH)3/NaBO2·2H2O具有稳定的pH值,Al-Li-Ni/NaBH4混合物具有很好的水解动力学.
A novel composition of AlLi/NaBH4 mixture activated by common Ni powder in water for hydrogen generation was investigated.The composition presents good hydrogen generation performance and an optimized Al-10％ Li-10％ Ni/NaB-H4 mixture (mass ratio of 3:l) generates 1540 mL/g hydrogen with 96％ efficiency at 333 K.Ni powder exhibits dual catalytic effects on the hydrolysis of AlLi/NaBH4 mixture due to the formation of Ni2B in the hydrolysis process.The Ni2B deposited on aluminum surface could act as a cathode of a micro galvanic couple.Ni2B/Al(OH)3 also has a synergistic effect on NaBH4hydrolysis.Good hydrogen generation performance with stable pH value of hydrolysis byproduct Al(OH)3/NaBO2·2H2O was obtained with successive additions of Al-Li-Ni/NaBH4 mixture into fixed water.
参考文献
| [1] | PRINCIPI G;AGRESTE F;MAGDALENA A;RUSSO S L .The problem of solid state hydrogen storage[J].lnt J Hydrogen Energy,2008,34(12):2087-2097. |
| [2] | A.V. Parmuzina;O.V. Kravchenko .Activation of aluminium metal to evolve hydrogen from water[J].International journal of hydrogen energy,2008(12):3073-3076. |
| [3] | U.S.Department of Energy Hydrogen Program .Independent review:go/no-go recommendation for sodium borohydride for on-board vehicular hydrogen storage[EB/OL].http://www.hydrogen.energy,gov/.pdfs/42220.pdf,2007. |
| [4] | 梁艳,王平,戴洪斌.硼氢化钠催化水解制氢[J].化学进展,2009(10):2219-2228. |
| [5] | 张翔,孙奎斌,周俊波.硼氢化钠水解制氢技术研究进展[J].无机盐工业,2010(01):9-12. |
| [6] | CHARLES S .Process of obtaining metals from their ores or compounds by electrolysis[P].US Patent 464933,1883-02-23. |
| [7] | LI Q F;BJERRUM N J .Aluminum as anode for energy storage and conversion:A review[J].Journal of Power Sources,2002,110(01):1-10. |
| [8] | Lluis Soler;Jorge Macanas;Maria Munoz;Juan Casado .Synergistic hydrogen generation from aluminum, aluminum alloys and sodium borohydride in aqueous solutions[J].International journal of hydrogen energy,2007(18):4702-4710. |
| [9] | Kunio Uehara;Hideo Takeshita;Hiromi Kotaka .Hydrogen gas generation in the wet cutting of aluminum and its alloys[J].Journal of Materials Processing Technology,2002(2):174-177. |
| [10] | O.V. Kravchenko;K.N. Semenenko;B.M. Bulychev .Activation of aluminum metal and its reaction with water[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):58-62. |
| [11] | CZECH E;TROCZYNSKI T .Hydrogen generation through massive corrosion of deformed alununum in water[J].International Journal of Hydrogen Energy,2010,35(03):1029-1037. |
| [12] | Shu Liu;Mei-qiang Fan;Chao Wang;Yue-xiang Huang;Da Chen;Li-qun Bai;Kang-ying Shu .Hydrogen generation by hydrolysis of Al-Li-Bi-NaCl mixture with pure water[J].International journal of hydrogen energy,2012(1):1014-1020. |
| [13] | DENG Z Y;TANG Y B;ZHU L L;SAKKA Y YE J .Effect of different modification agents on hydrogen-generation by the reaction of A1 with water[J].Iut J Hydrogen Energy,2010,35(18):9561-9568. |
| [14] | Evgeny Shafirovich;Victor Diakov;Arvind Varma .Combustion of novel chemical mixtures for hydrogen generation[J].Combustion and Flame,2006(1/2):415-418. |
| [15] | Hong-Bin Dai;Guang-Lu Ma;Xiang-Dong Kang .Hydrogen generation from coupling reactions of sodium borohydride and aluminum powder with aqueous solution of cobalt chloride[J].Catalysis Today,2011(1):50-55. |
| [16] | Mei-Qiang Fan;Fen Xu;Li-Xian Sun .Studies on hydrogen generation characteristics of hydrolysis of the ball milling Al-based materials in pure water[J].International journal of hydrogen energy,2007(14):2809-2815. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%