Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4]
© 2017 Hydrogen Energy Publications LLC A new potassium tetraamidoboranealuminate, K[Al(NH2BH3)4], has been synthesized by a mechanochemical reaction between KAlH4and NH3BH3. The compound, K[Al(NH2BH3)4], crystallizes in a triclinic unit cell with space group symmetry P-1. The crystal structure cons...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/71317 |
| _version_ | 1848762448025223168 |
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| author | Moller, Kasper Jørgensen, M. Andreasen, J. Skibsted, J. Lodziana, Z. Filinchuk, Y. Jensen, T. |
| author_facet | Moller, Kasper Jørgensen, M. Andreasen, J. Skibsted, J. Lodziana, Z. Filinchuk, Y. Jensen, T. |
| author_sort | Moller, Kasper |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Hydrogen Energy Publications LLC A new potassium tetraamidoboranealuminate, K[Al(NH2BH3)4], has been synthesized by a mechanochemical reaction between KAlH4and NH3BH3. The compound, K[Al(NH2BH3)4], crystallizes in a triclinic unit cell with space group symmetry P-1. The crystal structure consists of [K(NH2BH3)6]5-octahedra which facilitate the bridging between K+in 1D chains, while also bridging K+to Al3+to connect the 1D chains in a 3D network. Thermal analysis reveals that K[Al(NH2BH3)4] decomposes in two exothermic steps at T ~ 94 and 138 °C and releases primarily hydrogen. The total gas release amounts to ~6.0 wt% H2. The decomposition products are investigated ex situ by powder X-ray diffraction, infrared spectroscopy, and11B and27Al NMR and identified as KBH4and amorphous phases, possibly BN3, N2BH, and/or NBH2whereas aluminum is found in four-, five-, and six-fold coordination. Unfortunately, the decomposed sample shows no hydrogen absorption at T = 260 °C and p(H2) = 110 bar. |
| first_indexed | 2025-11-14T10:47:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-71317 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:47:43Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-713172020-06-15T03:32:48Z Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] Moller, Kasper Jørgensen, M. Andreasen, J. Skibsted, J. Lodziana, Z. Filinchuk, Y. Jensen, T. © 2017 Hydrogen Energy Publications LLC A new potassium tetraamidoboranealuminate, K[Al(NH2BH3)4], has been synthesized by a mechanochemical reaction between KAlH4and NH3BH3. The compound, K[Al(NH2BH3)4], crystallizes in a triclinic unit cell with space group symmetry P-1. The crystal structure consists of [K(NH2BH3)6]5-octahedra which facilitate the bridging between K+in 1D chains, while also bridging K+to Al3+to connect the 1D chains in a 3D network. Thermal analysis reveals that K[Al(NH2BH3)4] decomposes in two exothermic steps at T ~ 94 and 138 °C and releases primarily hydrogen. The total gas release amounts to ~6.0 wt% H2. The decomposition products are investigated ex situ by powder X-ray diffraction, infrared spectroscopy, and11B and27Al NMR and identified as KBH4and amorphous phases, possibly BN3, N2BH, and/or NBH2whereas aluminum is found in four-, five-, and six-fold coordination. Unfortunately, the decomposed sample shows no hydrogen absorption at T = 260 °C and p(H2) = 110 bar. 2018 Journal Article http://hdl.handle.net/20.500.11937/71317 10.1016/j.ijhydene.2017.11.080 Elsevier Ltd restricted |
| spellingShingle | Moller, Kasper Jørgensen, M. Andreasen, J. Skibsted, J. Lodziana, Z. Filinchuk, Y. Jensen, T. Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title | Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title_full | Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title_fullStr | Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title_full_unstemmed | Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title_short | Synthesis and thermal decomposition of potassium tetraamidoboranealuminate, K[Al(NH2BH3)4] |
| title_sort | synthesis and thermal decomposition of potassium tetraamidoboranealuminate, k[al(nh2bh3)4] |
| url | http://hdl.handle.net/20.500.11937/71317 |