Ammonia borane modified zirconium borohydride octaammoniate with enhanced dehydrogenation properties
Ammonia borane modified zirconium borohydride octaammoniate with enhanced dehydrogenation properties
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DOI：
10.1039/c4ta05328a
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发表时间：
2015-02
影响因子：
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通讯作者：
Jian-Yuan Huang;Yingbin Tan;Q. Gu;L. Ouyang;Xuebin Yu;Min Zhu
中科院分区：
文献类型：
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作者：
Jian-Yuan Huang;Yingbin Tan;Q. Gu;L. Ouyang;Xuebin Yu;Min Zhu
通过球磨 Zr(BH4)4·8NH3 和 NH3BH3 (AB) 制备了一种新的复合体系 Zr(BH4)4·8NH3–nNH3BH3 (n = 2,3,4,5)。与单独的化合物相比，该组合策略有效地抑制了氨的释放并降低了脱氢温度。在优化的成分Zr(BH4)4·8NH3–4AB中，氢气纯度提高至96.1 mol%，在100 °C时释放了7.0 wt%的氢气。这些显着的改进归因于AB与Zr(BH4)4·8NH3中的NH3基团之间的相互作用，这使得Hδ+⋯−δH的相互作用更加活跃。这些先进的脱氢特性表明 Zr(BH4)4·8NH3–4AB 是潜在储氢应用的有希望的候选者。
A new complex system, Zr(BH4)4·8NH3–nNH3BH3 (n = 2, 3, 4, 5), was prepared via ball milling of Zr(BH4)4·8NH3 and NH3BH3 (AB). The combination strategy effectively suppressed ammonia release and reduced the dehydrogenation temperature when compared to the individual compounds. In the optimized composition, Zr(BH4)4·8NH3–4AB, the hydrogen purity was improved to 96.1 mol% and 7.0 wt% of hydrogen was released at 100 °C. These remarkable improvements are attributed to the interaction between AB and the NH3 group in Zr(BH4)4·8NH3, which enables a more active interaction of Hδ+⋯−δH. These advanced dehydrogenation properties suggest that Zr(BH4)4·8NH3–4AB is a promising candidate for potential hydrogen storage applications.