Formation of transition metal hydrides at high pressures

Olga Degtyareva; John E. Proctor; Christophe L. Guillaume; Eugene Gregoryanz; Michael Hanfland

doi:10.1016/j.ssc.2009.07.022

Formation of transition metal hydrides at high pressures

Olga Degtyareva^*, John E. Proctor, Christophe L. Guillaume, Eugene Gregoryanz, Michael Hanfland

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

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. (C) 2009 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1583-1586
Number of pages	4
Journal	Solid state communications
Volume	149
Issue number	39-40
DOIs	https://doi.org/10.1016/j.ssc.2009.07.022
Publication status	Published - Oct 2009

Keywords / Materials (for Non-textual outputs)

Metals
Synthesis
High pressure
Synchrotron x-ray diffraction
RHENIUM HYDRIDE
HYDROGEN
SUPERCONDUCTIVITY
NITRIDE
SILANE

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10.1016/j.ssc.2009.07.022

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@article{ae77f8082a334880b71f02f2f5802044,

title = "Formation of transition metal hydrides at high pressures",

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. (C) 2009 Elsevier Ltd. All rights reserved.",

keywords = "Metals, Synthesis, High pressure, Synchrotron x-ray diffraction, RHENIUM HYDRIDE, HYDROGEN, SUPERCONDUCTIVITY, NITRIDE, SILANE",

author = "Olga Degtyareva and Proctor, {John E.} and Guillaume, {Christophe L.} and Eugene Gregoryanz and Michael Hanfland",

year = "2009",

month = oct,

doi = "10.1016/j.ssc.2009.07.022",

language = "English",

volume = "149",

pages = "1583--1586",

journal = "Solid state communications",

issn = "0038-1098",

publisher = "Elsevier",

number = "39-40",

}

TY - JOUR

T1 - Formation of transition metal hydrides at high pressures

AU - Degtyareva, Olga

AU - Proctor, John E.

AU - Guillaume, Christophe L.

AU - Gregoryanz, Eugene

AU - Hanfland, Michael

PY - 2009/10

Y1 - 2009/10

N2 - 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. (C) 2009 Elsevier Ltd. All rights reserved.

AB - 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. (C) 2009 Elsevier Ltd. All rights reserved.

KW - Metals

KW - Synthesis

KW - High pressure

KW - Synchrotron x-ray diffraction

KW - RHENIUM HYDRIDE

KW - HYDROGEN

KW - SUPERCONDUCTIVITY

KW - NITRIDE

KW - SILANE

U2 - 10.1016/j.ssc.2009.07.022

DO - 10.1016/j.ssc.2009.07.022

M3 - Article

SN - 0038-1098

VL - 149

SP - 1583

EP - 1586

JO - Solid state communications

JF - Solid state communications

IS - 39-40

ER -

Formation of transition metal hydrides at high pressures

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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