Formation of transition metal hydrides at high pressures

Silane (SiH 4) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H 2. The released hydrogen reacts with surrounding metals in the diamond anvil cell to form metal hydrides. A formation of rhenium hydride is observed after the decomposition of silane and...

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Published in	Solid state communications Vol. 149; no. 39; pp. 1583 - 1586
Main Authors	Degtyareva, Olga, Proctor, John E., Guillaume, Christophe L., Gregoryanz, Eugene, Hanfland, Michael
Format	Journal Article
Language	English
Published	Kidlington Elsevier Ltd 01.10.2009 Elsevier
Subjects	A. Metals B. Synthesis Cross-disciplinary physics: materials science; rheology E. High pressure E. Synchrotron x-ray diffraction Exact sciences and technology Materials science Materials synthesis; materials processing Physics 62.50.+p 61.50.Ks B. Synthesis E. Synchrotron x-ray diffraction A. Metals E. High pressure Metals Hydrides Chemical decomposition XRD Synchrotron radiation High pressure
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Abstract	Silane (SiH 4) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H 2. The released hydrogen reacts with surrounding metals in the diamond anvil cell to form metal hydrides. A formation of rhenium hydride is observed after the decomposition of silane and reaction of hydrogen with Re gasket. From the data of a previous experimental report [M.I. Eremets, I.A. Trojan, S.A. Medvedev, J.S. Tse, Y. Yao, Science 319 (2008) 1506], the claimed high-pressure metallic and superconducting phase of silane is identified as platinum hydride, that forms after the decomposition of silane. These observations show the importance of taking into account possible chemical reactions that are often neglected in high-pressure experiments.
AbstractList	Silane (SiH(4)) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H(2). The released hydrogen reacts with surrounding metals in the diamond anvil cell to form metal hydrides. A formation of rhenium hydride is observed after the decomposition of silane and reaction of hydrogen with Re gasket. From the data of a previous experimental report [M.I. Eremets, I.A. Trojan, S.A. Medvedev, J.S. Tse, Y. Yao, Science 319 (2008) 1506], the claimed high-pressure metallic and superconducting phase of silane is identified as platinum hydride, that forms after the decomposition of silane. These observations show the importance of taking into account possible chemical reactions that are often neglected in high-pressure experiments. Silane (SiH 4) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H 2. The released hydrogen reacts with surrounding metals in the diamond anvil cell to form metal hydrides. A formation of rhenium hydride is observed after the decomposition of silane and reaction of hydrogen with Re gasket. From the data of a previous experimental report [M.I. Eremets, I.A. Trojan, S.A. Medvedev, J.S. Tse, Y. Yao, Science 319 (2008) 1506], the claimed high-pressure metallic and superconducting phase of silane is identified as platinum hydride, that forms after the decomposition of silane. These observations show the importance of taking into account possible chemical reactions that are often neglected in high-pressure experiments.
Author	Proctor, John E. Hanfland, Michael Gregoryanz, Eugene Guillaume, Christophe L. Degtyareva, Olga
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Snippet	Silane (SiH 4) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H 2. The released hydrogen reacts with... Silane (SiH(4)) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H(2). The released hydrogen reacts with...
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SubjectTerms	A. Metals B. Synthesis Cross-disciplinary physics: materials science; rheology E. High pressure E. Synchrotron x-ray diffraction Exact sciences and technology Materials science Materials synthesis; materials processing Physics
Title	Formation of transition metal hydrides at high pressures
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