Synthesis and advanced dehydrogenation properties of niobium-based ammine borohydride
Synthesis and advanced dehydrogenation properties of niobium-based ammine borohydride
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铌基氨胺硼氢化物的合成及先进脱氢性能
DOI：
10.1016/j.ijhydene.2013.05.044
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发表时间：
2013-07
期刊：
影响因子：
--
通讯作者：
Yu, Xuebin
中科院分区：
文献类型：
--
作者：
Li, Meng;Yuan, Feng;Gu, Qinfen;Yu, Xuebin
以NbCl5·5nh3和MBH4（M = Li, Na）为原料，摩尔比为1:5，采用简单球磨法制备了铌基氨基硼氢化物。热重质谱分析（TGA-MS）和程序升温解吸（TPD）结果表明，NbCl5·5nh3 / 5libh4和NbCl5·5nh3 / 5nabh4混合物在加热至250℃时的脱氢过程为两步分解，纯氢析出率分别为8.1 wt.%和11.2 wt.%。等温TPD结果表明，在150℃和220℃条件下，60 min内，NbCl5·5nh3 / 5nabh4分别释放出6 wt.%和10.4 wt.%的纯氢。傅里叶变换红外光谱（FTIR）和同位素标记测量表明，铌基氨基硼氢化物的脱氢机制不仅基于BH和NH基团的组合反应，而且BH⋯HB和NH⋯HN的同极性相互作用也有助于h2生成。
In this paper, niobium-based ammine borohydride has been synthesized via a simple ball milling of NbCl5·5NH3and MBH4(M = Li, Na) with a molar ratio of 1:5. Thermogravimetric analysis–mass spectrometry (TGA–MS) and temperature-programmed-desorption (TPD) results revealed that the dehydrogenation of NbCl5·5NH3/5LiBH4and NbCl5·5NH3/5NaBH4mixtures showed a two-step decomposition process with a total of 8.1 wt.% and 11.2 wt.% pure hydrogen evolution upon heating to 250 °C, respectively. Isothermal TPD results showed that over 6 wt.% and 10.4 wt.% pure hydrogen were liberated from NbCl5·5NH3/5NaBH4within 60 min at 150 °C and 220 °C, respectively. Fourier transform infrared spectroscopy (FTIR) and isotope tagging measurements demonstrated that the dehydrogenation mechanism of niobium-based ammine borohydride is not only based on the combination reaction of BH and NH groups, but the BH⋯HB and NH⋯HN homo-polar interactions also contribute to the H2formation.
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影响因子：
3.7
作者：
L. Gao;Yanhui Guo;Qin Li;Xuebin Yu
通讯作者：
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影响因子：
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作者：
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DOI：
10.1002/asia.200900051
发表时间：
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期刊：
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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