虎门体育官方登录入口网:标题
虎门体育官方登录入口网:作者
作者:Ouyang, LZ (Ouyang, L. Z.)[1,2,3 ]; Zhong, H (Zhong, H.)[1,2 ]; Li, ZM (Li, Z. M.)[1,2 ]; Cao, ZJ (Cao, Z. J.)[1,2 ]; Wang, H (Wang, H.)[1,2 ]; Liu, JW (Liu, J. W.)[1,2 ]; Zhu, XK (Zhu, X. K.)[1,2 ]; Zhu, M (Zhu, M.)[1,2 ]
虎门体育官方登录入口网:期刊信息
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文献类型:Article
虎门体育官方登录入口网:摘要
Hydrolysis of sodium borohydride (NaBH4) is one of the most attractive methods for energy generation of mobile systems used as hydrogen source because of the high gravimetric density and controllable hydrogen generation of NaBH4. However, regeneration of NaBH4 is a key issue that remains to be solved, and the energy efficiency of NaBH4 is unknown. In the present study, the energy efficiency of NaBH4 hydrolysis and the entire process of sodium metaborate (NaBO2) regeneration via reaction with magnesium hydride (MgH2) is determined through thermodynamics calculations. The maximum energy efficiency is 49.91%, indicating that NaBH4 generation by reaction between MgH2 and NaBO2 during ball milling is feasible. An inexpensive high-energy ball milling method is employed to regenerate NaBH4 by reaction of NaBO2 with magnesium lanthanum hydrides (H-Mg3La). Products after ball milling are characterized through Fourier transform infrared spectroscopy and X-ray diffraction measurements. In the reaction of NaBO2 with H-Mg3La, MgH2 reacts with NaBO2 and then lanthanum hydride (LaH3) reacts with NaBO2 to produce NaBH4. (C) 2014 Elsevier B.V. All rights reserved.
虎门体育官方登录入口网:关键词
作者关键词:Sodium borohydride; Energy efficiency; Magnesium-lanthanum hydrides; Ball milling
虎门体育官方登录入口网:作者信息
通讯作者地址:Zhu, M (通讯作者)
 | S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China. |
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电子邮件地址:memzhu@scut.edu.cn
虎门体育官方登录入口网:出版商
虎门体育官方登录入口网:类别分类
研究方向:Chemistry; Electrochemistry; Energy & Fuels; Materials Science
Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary