Artikel
Lizenziert
Nicht lizenziert
Erfordert eine Authentifizierung
Hydrogenation of FeSi under high pressure
-
Hidenori Terasaki
,
Yuki Shibazaki
Veröffentlicht/Copyright:
2. April 2015
Abstract
Hydrogen is the most abundant element in the solar system, suggesting that hydrogen is one of the plausible light elements in the planetary cores. To investigate the solubility of hydrogen into FeSi and phase relations of the FeSi-H system under high pressure, we performed in situ X-ray diffraction experiments on the FeSi-H and FeSi systems at high pressure and high temperature. Hydrogen starts to dissolve in FeSi (hydrogenation) and form FeSiHx with cubic B20 structure above 10 GPa. Hydrogen content (x), estimated from the volume difference between the FeSi-H and FeSi systems, increases from 0.07 to 0.22 with increasing pressure for P > 10 GPa. Comparing the present results with hydrogenation pressure of Fe, presence of Si in metal increases the minimal pressure for H incorporation. Hydrogen, therefore, can only incorporate into the Fe-Si core at the deeper part (P > 10 GPa) in the planetary interior.
Received: 2010-6-14
Accepted: 2010-8-12
Published Online: 2015-4-2
Published in Print: 2011-1-1
© 2015 by Walter de Gruyter Berlin/Boston
Sie haben derzeit keinen Zugang zu diesem Inhalt.
Sie haben derzeit keinen Zugang zu diesem Inhalt.
Artikel in diesem Heft
- A mineralogical, geochemical, and microbiogical assessment of the antimony- and arsenic-rich neutral mine drainage tailings near Pezinok, Slovakia
- Luminescence of diamonds from metamorphic rocks
- Crystal chemistry of Th in fluorapatite
- Hydrogen-bond and cation partitioning in muscovite: A single-crystal neutron-diffraction study at 295 and 20 K
- Spectroscopic characterization of transition metal impurities in natural montebrasite/amblygonite
- An assessment of the potential benefits of ion implants as trace-element reference material for electron probe X-ray microanalysis: The case of invisible gold
- The incorporation of hydroxyl into zircon
- Association between phosphorus and iron oxides in manganese ores
- Equation of state of carbonated hydroxylapatite at ambient temperature up to 10 GPa: Significance of carbonate
- Monoclinic tridymite in clast-rich impact melt rock from the Chesapeake Bay impact structure
- Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils
- Hydrogenation of FeSi under high pressure
- Fe-Ti oxide-silicate (QUIlF-type) equilibria in feldspathoid-bearing systems
- In situ bubble vesiculation in silicic magmas
- First-principles calculation of the elastic moduli of sheet silicates and their application to shale anisotropy
- A new semi-micro wet chemical method for apatite analysis and its application to the crystal chemistry of fluorapatite-chlorapatite solid solutions
- New insight into the structural transformation of partially dehydroxylated pyrophyllite
- A 94-layer long-period mica polytype: A TEM study
- The crystal structure of stichtite, re-examination of barbertonite, and the nature of polytypism in MgCr hydrotalcites
- Vorlanite (CaU6+)O4—A new mineral from the Upper Chegem caldera, Kabardino-Balkaria, Northern Caucasus, Russia
- The structure of braitschite, a calcium rare earth borate
- Alteration of dehydrated schoepite and soddyite to studtite, [(UO2)(O2)(H2O)2](H2O)2
- A reinvestigation of smectite illitization in experimental hydrothermal conditions: Results from X-ray diffraction and transmission electron microscopy
- Letter. The elastic properties of diopside, CaMgSi2O6
Artikel in diesem Heft
- A mineralogical, geochemical, and microbiogical assessment of the antimony- and arsenic-rich neutral mine drainage tailings near Pezinok, Slovakia
- Luminescence of diamonds from metamorphic rocks
- Crystal chemistry of Th in fluorapatite
- Hydrogen-bond and cation partitioning in muscovite: A single-crystal neutron-diffraction study at 295 and 20 K
- Spectroscopic characterization of transition metal impurities in natural montebrasite/amblygonite
- An assessment of the potential benefits of ion implants as trace-element reference material for electron probe X-ray microanalysis: The case of invisible gold
- The incorporation of hydroxyl into zircon
- Association between phosphorus and iron oxides in manganese ores
- Equation of state of carbonated hydroxylapatite at ambient temperature up to 10 GPa: Significance of carbonate
- Monoclinic tridymite in clast-rich impact melt rock from the Chesapeake Bay impact structure
- Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils
- Hydrogenation of FeSi under high pressure
- Fe-Ti oxide-silicate (QUIlF-type) equilibria in feldspathoid-bearing systems
- In situ bubble vesiculation in silicic magmas
- First-principles calculation of the elastic moduli of sheet silicates and their application to shale anisotropy
- A new semi-micro wet chemical method for apatite analysis and its application to the crystal chemistry of fluorapatite-chlorapatite solid solutions
- New insight into the structural transformation of partially dehydroxylated pyrophyllite
- A 94-layer long-period mica polytype: A TEM study
- The crystal structure of stichtite, re-examination of barbertonite, and the nature of polytypism in MgCr hydrotalcites
- Vorlanite (CaU6+)O4—A new mineral from the Upper Chegem caldera, Kabardino-Balkaria, Northern Caucasus, Russia
- The structure of braitschite, a calcium rare earth borate
- Alteration of dehydrated schoepite and soddyite to studtite, [(UO2)(O2)(H2O)2](H2O)2
- A reinvestigation of smectite illitization in experimental hydrothermal conditions: Results from X-ray diffraction and transmission electron microscopy
- Letter. The elastic properties of diopside, CaMgSi2O6
