In situ diffraction study of the formation of rhenium hydride at high pressure

Journal Article · Fri Sep 01 00:00:00 EDT 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1995.1348· OSTI ID:210084

Atou, T; Badding, J V ^[1]

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1. Pennsylvania State Univ., University Park, PA (United States)

The formation of rhenium hydride from rhenium and hydrogen at high pressure has been studied using a diamond anvil cell and in-situ X-ray diffraction. Rhenium hydride forms by 5.3 GPa at room temperature. The hydride has an hcp structure with interstitial hydrogen. By 8.6 GPa, the stoichiometry of rhenium hydride saturates to ReH{sub 0.38{plus_minus}0.04}, a value significantly greater than found in earlier studies of quenched material. After saturation at 8.6 GPa, the interstitial hydrogen is {open_quotes}incompressible,{close_quotes} such that the difference in the volumes between rhenium metal and rhenium hydride remains nearly constant up to at least 20 GPa.

• OSTI ID: 210084
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 118; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
HCP LATTICES
HIGH PRESSURE
MEDIUM PRESSURE
PRESSURE DEPENDENCE
RHENIUM HYDRIDES
STOICHIOMETRY
SYNTHESIS