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学科主题: 物理化学
题名: Releasing H2 from LiBH4-NH3 system
作者: Zheng XL(郑学丽) ;  Wu GT(吴国涛) ;  Li W(李文) ;  Xiong ZT(熊智涛) ;  He T(何腾) ;  Guo JP(郭建平) ;  Chen P(陈萍)
会议文集: IEA HIA TASK 22Meeting Fundamental and Applied Hydrogen Storage Materials Development
会议名称: IEA HIA TASK 22 Meeting Fundamental and Applied Hydrogen Storage Materials Development
会议日期: 2011-9-1
出版日期: 2011
会议地点: 哥本哈根
通讯作者: 陈萍
出版者: 待补充
出版地: 待补充
合作性质: 分会特邀报告
部门归属: 1901
主办者: AARHUS UNIVERSITY
摘要: Releasing ca. 17.8 wt % of hydrogen was observed from the Co-catalyzed lithium borohydride ammoniate, Li(NH3)4/3BH4 (with equivalent protic and hydridic hydrogen atoms), in the temperature range of 135 to 250 °C in a closed vessel. The low NH3 equilibrium vapor pressure of the ammoniate in the vessel results in the retention of the majority of NH3 in the vicinity of LiBH4, and thus, creates an environment favorable for the direct dehydrogenation rather than deammoniation. The dehydrogenation is a two-step process forming the intermediates Li4BN3H10 and LiBH4. The final solid residue is a mixture of BN and Li3BN2. The presence of Co catalyst effectively reduces the kinetic barrier from 118.9 to 60.0 kJ mol-1.
英文摘要: Releasing ca. 17.8 wt % of hydrogen was observed from the Co-catalyzed lithium borohydride ammoniate, Li(NH3)4/3BH4 (with equivalent protic and hydridic hydrogen atoms), in the temperature range of 135 to 250 °C in a closed vessel. The low NH3 equilibrium vapor pressure of the ammoniate in the vessel results in the retention of the majority of NH3 in the vicinity of LiBH4, and thus, creates an environment favorable for the direct dehydrogenation rather than deammoniation. The dehydrogenation is a two-step process forming the intermediates Li4BN3H10 and LiBH4. The final solid residue is a mixture of BN and Li3BN2. The presence of Co catalyst effectively reduces the kinetic barrier from 118.9 to 60.0 kJ mol-1.
语种: 英语
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/116143
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zheng XL,Wu GT,Li W,et al. Releasing H2 from LiBH4-NH3 system[C]. 见:IEA HIA TASK 22 Meeting Fundamental and Applied Hydrogen Storage Materials Development. 哥本哈根. 2011-9-1.
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