Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides
Cl - to BH4- ion substitution was induced in NaBH 4 through mechano-chemical reactions with all the first period transition metal chlorides and CdCl 2. The products were identified by Rietveld refinement of powder X-ray and neutron diffraction data to be mainly Na(BH 4) 1-xCl x. These possess cubic...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2012
|
| Online Access: | http://hdl.handle.net/20.500.11937/17226 |
| _version_ | 1848749407409799168 |
|---|---|
| author | Llamas-Jansa, I. Aliouane, N. Deledda, S. Fonnelop, J. Frommen, C. Humphries, Terry Lieutenant, K. Sartori, S. Sorby, M. Hauback, B. |
| author_facet | Llamas-Jansa, I. Aliouane, N. Deledda, S. Fonnelop, J. Frommen, C. Humphries, Terry Lieutenant, K. Sartori, S. Sorby, M. Hauback, B. |
| author_sort | Llamas-Jansa, I. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Cl - to BH4- ion substitution was induced in NaBH 4 through mechano-chemical reactions with all the first period transition metal chlorides and CdCl 2. The products were identified by Rietveld refinement of powder X-ray and neutron diffraction data to be mainly Na(BH 4) 1-xCl x. These possess cubic NaCl-type structures, with unit cell parameters between 5.7801(3) and 5.6576(2), and compositions ranging from x = 0.69 (with Cu) to 0.92 (with Zn). Infrared spectroscopy of selected samples confirms the substitution through a shift of the vibrational modes of the BH4- group towards higher wavenumbers. An observed shape change of the vibrational features from Lorentzian to Gaussian is related to the presence of the transition metal. There is no correlation between x and the thermal behavior of the samples. The lowest decomposition temperature is found for the Zn containing sample (103 °C), while Cd leads to the highest value (521 °C). Their behavior is related to the presence of NaZn(BH 4) 3 and metallic Cd in the samples, respectively. © 2011 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T07:20:27Z |
| format | Journal Article |
| id | curtin-20.500.11937-17226 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:20:27Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-172262017-09-13T15:43:30Z Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides Llamas-Jansa, I. Aliouane, N. Deledda, S. Fonnelop, J. Frommen, C. Humphries, Terry Lieutenant, K. Sartori, S. Sorby, M. Hauback, B. Cl - to BH4- ion substitution was induced in NaBH 4 through mechano-chemical reactions with all the first period transition metal chlorides and CdCl 2. The products were identified by Rietveld refinement of powder X-ray and neutron diffraction data to be mainly Na(BH 4) 1-xCl x. These possess cubic NaCl-type structures, with unit cell parameters between 5.7801(3) and 5.6576(2), and compositions ranging from x = 0.69 (with Cu) to 0.92 (with Zn). Infrared spectroscopy of selected samples confirms the substitution through a shift of the vibrational modes of the BH4- group towards higher wavenumbers. An observed shape change of the vibrational features from Lorentzian to Gaussian is related to the presence of the transition metal. There is no correlation between x and the thermal behavior of the samples. The lowest decomposition temperature is found for the Zn containing sample (103 °C), while Cd leads to the highest value (521 °C). Their behavior is related to the presence of NaZn(BH 4) 3 and metallic Cd in the samples, respectively. © 2011 Elsevier B.V. All rights reserved. 2012 Journal Article http://hdl.handle.net/20.500.11937/17226 10.1016/j.jallcom.2012.02.167 restricted |
| spellingShingle | Llamas-Jansa, I. Aliouane, N. Deledda, S. Fonnelop, J. Frommen, C. Humphries, Terry Lieutenant, K. Sartori, S. Sorby, M. Hauback, B. Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title | Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title_full | Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title_fullStr | Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title_full_unstemmed | Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title_short | Chloride substitution induced by mechano-chemical reactions between NaBH 4 and transition metal chlorides |
| title_sort | chloride substitution induced by mechano-chemical reactions between nabh 4 and transition metal chlorides |
| url | http://hdl.handle.net/20.500.11937/17226 |