Effects of Ball Milling and TiF3 Addition on the Dehydrogenation Temperature of Ca(BH4)2 Polymorphs
Abstract
:1. Introduction
2. Results and Discussion
2.1. Milling Effects on As-Received Ca(BH)
2.2. Milling Effects on Ca(BH) with TiF
2.3. Activation Energies
3. Materials and Methods
Sample Name | Highest Content Polymorph | Phase Fraction // (mol%) | Synthesis Method |
---|---|---|---|
67/23/10 | from Ca(BH).2THF a | ||
98/–/2 | from Ca(BH).2THF a | ||
8/–/92 | from CaH + 2EtN.BH b | ||
–/64/– d | reactive milling in BH c | ||
–/92/– | reactive milling in BH c |
Sample Name | Highest Content Polymorph | Milling Time/h | TiF Content/mol% |
---|---|---|---|
1, 2, 4, 8 | 0, 1.6, 5, 10 | ||
8, 24 | 10, 20, 50 | ||
1, 2, 4, 8 | 0, 1.6, 5, 10 | ||
1, 2, 4, 8 | 10 | ||
1, 2, 4, 8 | 10 |
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Llamas Jansa, I.; Friedrichs, O.; Fichtner, M.; Bardají, E.G.; Züttel, A.; Hauback, B.C. Effects of Ball Milling and TiF3 Addition on the Dehydrogenation Temperature of Ca(BH4)2 Polymorphs. Energies 2020, 13, 4828. https://doi.org/10.3390/en13184828
Llamas Jansa I, Friedrichs O, Fichtner M, Bardají EG, Züttel A, Hauback BC. Effects of Ball Milling and TiF3 Addition on the Dehydrogenation Temperature of Ca(BH4)2 Polymorphs. Energies. 2020; 13(18):4828. https://doi.org/10.3390/en13184828
Chicago/Turabian StyleLlamas Jansa, Isabel, Oliver Friedrichs, Maximilian Fichtner, Elisa Gil Bardají, Andreas Züttel, and Bjørn C. Hauback. 2020. "Effects of Ball Milling and TiF3 Addition on the Dehydrogenation Temperature of Ca(BH4)2 Polymorphs" Energies 13, no. 18: 4828. https://doi.org/10.3390/en13184828