Temperature and pressure cycling of magnesium hydride with additives

G. URRETAVIZCAYA; V. FUSTER; F. CASTRO

Islandia

Simposio; International Symposium on Metal-Hydrogen Systems: Fundamentals and Applications; 2008

MgH2-based materials with graphite and boron nitride as additives have been synthesized by reactive mechanical alloying (RMA) Mg under hydrogen atmosphere. The additives were incorporated from the beginning or after MgH2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. by reactive mechanical alloying (RMA) Mg under hydrogen atmosphere. The additives were incorporated from the beginning or after MgH2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. by reactive mechanical alloying (RMA) Mg under hydrogen atmosphere. The additives were incorporated from the beginning or after MgH2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. by reactive mechanical alloying (RMA) Mg under hydrogen atmosphere. The additives were incorporated from the beginning or after MgH2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. 2-based materials with graphite and boron nitride as additives have been synthesized by reactive mechanical alloying (RMA) Mg under hydrogen atmosphere. The additives were incorporated from the beginning or after MgH2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. 2 formation, in this last case by milling 5 additional hours. We report here the effect on the synthesized materials of temperature and pressure cycling under hydrogen atmosphere. The thermal cycling behavior was studied by highpressure differential scanning calorimetry (HPDSC), the isothermal pressure cycling was characterized by pressure programmed absorption and desorption (PPAD) [1]. Although the milled samples don’t require activation, changes during the first ten cycles are observed. The influence of the measurement conditions on this evolution is explored, and the effect of the additives is analyzed. References 1. G. Urretavizcaya, V. Fuster and F.J. Castro, Rev. Sci. Instr.76, 073902 (2005).