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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)1583-1586
Number of pages4
JournalSolid state communications
Issue number39-40
Publication statusPublished - Oct 2009

Keywords / Materials (for Non-textual outputs)

  • Metals
  • Synthesis
  • High pressure
  • Synchrotron x-ray diffraction


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