Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 19, Issue 11, Pages 7788-7792Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp00448f
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Funding
- Swiss National Science Foundation (SNFS) [206021_150638/1]
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Ca(BH4)(2) could reversibly store 9.6 wt% hydrogen based on the overall reaction of Ca(BH4)(2) - 1/3CaB(6)+ 2/3CaH(2) + 10/3H(2). Formation of CaB6 instead of elemental boron and/or high boranes (e.g. CaB12H12) in the dehydrogenation process is crucial for rehydrogenation. Here, we reported two experimental protocols regarding how to form CaB6 from the decomposition of Ca(BH4) 2: (1) decomposition below the melting point, e.g. 350 degrees C via CaB2H6 to CaB2H6 and (2) decomposition above the melting point, e.g. 400 degrees C via elemental boron to CaB6.
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