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 |
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American Institute of Physics
07.12.2011
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Abstract | 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. |
---|---|
AbstractList | 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. 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-CdI2-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. 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. 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.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. |
Author | Degtyareva, Olga Gregoryanz, Eugene Scheler, Thomas |
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Cites_doi | 10.1524/zpch.1985.146.2.129 10.1016/0022-5088(87)90045-2 10.1016/j.ssc.2004.01.021 10.1016/j.ssc.2004.05.014 10.1103/PhysRevB.64.184302 10.1080/08957959608201408 10.1006/jssc.1995.1348 10.1080/08957950802235640 10.1016/j.ijhydene.2010.03.078 10.1007/s00114-004-0516-x 10.1016/j.ssc.2009.07.022 10.1016/S0925-8388(01)01532-8 10.1002/pssb.2221420246 10.1088/0305-4608/1/3/307 10.1103/PhysRevB.83.214106 10.1103/PhysRevLett.106.095503 10.4131/jshpreview.7.301 |
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Snippet | In situ
x-ray diffraction experiments on rhenium hydride compressed up to 46 GPa reveal a hydrogen solubility (
x
) significantly larger than the previously... In situ x-ray diffraction experiments on rhenium hydride compressed up to 46 GPa reveal a hydrogen solubility (x) significantly larger than the previously... |
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Title | On the effects of high temperature and high pressure on the hydrogen solubility in rhenium |
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