A Round Robin Test exercise on hydrogen absorption/desorption properties of a magnesium hydride based material
ZLOTEA, C.
JRC Institute for Energy and Transport [IET]
Institut de Chimie et des Matériaux Paris-Est [ICMPE]
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JRC Institute for Energy and Transport [IET]
Institut de Chimie et des Matériaux Paris-Est [ICMPE]
ZLOTEA, C.
JRC Institute for Energy and Transport [IET]
Institut de Chimie et des Matériaux Paris-Est [ICMPE]
JRC Institute for Energy and Transport [IET]
Institut de Chimie et des Matériaux Paris-Est [ICMPE]
BORGSCHULTE, A.
Department of Mobility, Environment, and Energy, Div. "Hydrogen and Energy"and Technology"
< Reduce
Department of Mobility, Environment, and Energy, Div. "Hydrogen and Energy"and Technology"
Language
en
Article de revue
This item was published in
International Journal of Hydrogen Energy. 2013, vol. 38, n° 16, p. 6704-6717
Elsevier
English Abstract
A Round Robin Test exercise on magnesium hydride (MgH2) was performed by 14 laboratories with the aim to compare experimental isothermal data such PCI curves, kinetics curves and formation enthalpies together with a basic ...Read more >
A Round Robin Test exercise on magnesium hydride (MgH2) was performed by 14 laboratories with the aim to compare experimental isothermal data such PCI curves, kinetics curves and formation enthalpies together with a basic statistical evaluation of the results. The full hydrogen capacity was found to vary in the range 5.1-6.4 wt.% at 280 °C (553 K) and in the range 5.3-6.6 wt.% at 320 °C (593 K) (value for 1 MPa hydrogen pressure). The relative standard deviations of 6.9% and 7.2%, respectively, were measured for absorption. The absorption plateau pressure of magnesium hydride varies between 0.08 and 0.14 MPa with an average of 0.10 MPa and a relative standard deviation of 17.3% at 280 °C (553 K). At 320 °C (593 K) the absorption plateau pressure results fall in the range 0.26-0.45 MPa, with a relative standard deviation of 17.6%. Kinetics curves were affected by much higher data dispersion than the PCI data. The enthalpy of absorption was −75.7 KJ/moleH2, with a relative standard deviation of 4.4%. The results highlight the importance of well defined measuring and reporting protocols as a base for future standard procedures.Read less <
English Keywords
Round Robin Test
Magnesium hydride
Kinetics
Thermodynamics
Enthalpy
Origin
Hal imported