On the effects of high temperature and high pressure on the hydrogen solubility in rhenium
In situ x-ray diffraction experiments on rhenium hydride compressed up to 46 GPa reveal a hydrogen solubility ( x ) significantly larger than the previously assumed saturation limit of x ∼ 0.38(4). In the layered anti-CdI 2 -type structure of rhenium hydride, the hydrogen solubility was found to inc...
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| Published in | The Journal of chemical physics Vol. 135; no. 21; pp. 214501 - 214501-4 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
American Institute of Physics
07.12.2011
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| Online Access | Get full text |
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| Summary: | In situ
x-ray diffraction experiments on rhenium hydride compressed up to 46 GPa reveal a hydrogen solubility (
x
) significantly larger than the previously assumed saturation limit of
x
∼ 0.38(4). In the layered anti-CdI
2
-type structure of rhenium hydride, the hydrogen solubility was found to increase to
x
∼ 0.5 at 15 GPa over time. When heated to temperatures above 420 K at pressures above 23 GPa, rhenium hydride undergoes an isomorphous phase transition into the NiAs-type structure accompanied by an increase in hydrogen solubility to
x
∼ 0.85. The formation of fully stoichiometric rhenium hydride is discussed. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0021-9606 1089-7690 1089-7690 |
| DOI: | 10.1063/1.3652863 |