Hydrogen generation from coupling reactions of sodium borohydride and aluminum powder with aqueous solution of cobalt chloride
Hydrogen generation from coupling reactions of sodium borohydride and aluminum powder with aqueous solution of cobalt chloride
复制标题
硼氢化钠、铝粉与氯化钴水溶液偶联反应制氢
DOI：
10.1016/j.cattod.2010.10.094
复制
发表时间：
2011-07-19
期刊：
影响因子：
5.3
通讯作者：
Wang, Ping
中科院分区：
文献类型：
--
作者：
Dai, Hong-Bin;Ma, Guang-Lu;Wang, Ping
通过化学氢化物的水解反应按需产生氢气作为提供移动/便携式氢源的有前途的方法而受到越来越多的关注。在本文中，我们报道了一种新型化学储氢系统，该系统由硼氢化钠（NaBH4）/铝（Al）/氢氧化钠（NaOH）固体粉末混合物和氯化钴（CoCl2）水溶液组成。通过调节水溶液与固体粉末混合物的接触可以容易地控制氢气的产生。与传统的NaBH4/H2O或Al/H2O系统相比，新开发的双固体燃料系统在储氢密度、氢气生成率和燃料转化率方面表现出明显的优势。此外，双固体燃料系统表现出令人满意的瞬态响应。研究了影响系统制氢性能的因素。使用粉末X射线衍射和傅里叶变换红外光谱技术对反应副产物进行了表征。我们的研究展示了一种高性能双固体燃料制氢系统，并可能为开发用于移动/便携式应用的实用氢气发生器奠定基础。 (C) 2010 Elsevier B.V. 保留所有权利。
On-demand hydrogen generation from the hydrolysis reactions of chemical hydrides has gained ever-increasing attention as a promising approach for providing mobile/portable hydrogen sources. In this paper, we report a new chemical hydrogen storage system that is composed of sodium borohydride (NaBH4)/aluminum (Al)/sodium hydroxide (NaOH) solid powder mixture and aqueous solution of cobalt chloride (CoCl2). Hydrogen generation can be readily controlled by regulating the contact of the aqueous solution with the solid powder mixture. In comparison with the conventional NaBH4/H2O or Al/H2O systems, the newly developed dual-solid-fuel system exhibits distinct advantages in hydrogen storage density, hydrogen generation rate and fuel conversion. Additionally, the dual-solid-fuel system shows satisfactory transient response. The factors influencing the hydrogen generation performance of the system were studied. The reaction by-products were characterized using powder X-ray diffraction and Fourier transform infrared spectroscopy techniques. Our study demonstrated a high-performance dual-solid-fuel hydrogen generation system, and may lay a foundation for developing practical hydrogen generators for mobile/portable applications. (C) 2010 Elsevier B.V. All rights reserved.