<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In the present study, hydrogen desorption properties of magnesium hydride (MgH2) synthesized from modified waste magnesium chips (WMC) were investigated. MgH2 was synthesized by hydrogenation of modified waste magnesium at 320 °C for 90 min under a pressure of 6 × 106 Pa. The modified waste magnesium was prepared by mixing waste magnesium with tetrahydrofuran (THF) and NaCl additions, applying mechanical milling. Next, it was investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) techniques in order to characterize its structural properties. Hydrogen desorption properties were determined by differential scanning calorimetry (DSC) under nitrogen atmosphere at different heating rates (5, 10, and 15 °C/min). Doyle and Kissenger non-isothermal kinetic models were applied to calculate energy (Ea) values, which were found equal to 254.68 kJ/mol and 255.88 kJ/mol, respectively.</p></abstract>

In the present study, hydrogen desorption properties of magnesium hydride (MgH2) synthesized from modified waste magnesium chips (WMC) were investigated. MgH2 was synthesized by hydrogenation of modified waste magnesium at 320 °C for 90 min under a pressure of 6 × 106 Pa. The modified waste magnesium was prepared by mixing waste magnesium with tetrahydrofuran (THF) and NaCl additions, applying mechanical milling. Next, it was investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) techniques in order to characterize its structural properties. Hydrogen desorption properties were determined by differential scanning calorimetry (DSC) under nitrogen atmosphere at different heating rates (5, 10, and 15 °C/min). Doyle and Kissenger non-isothermal kinetic models were applied to calculate energy (Ea) values, which were found equal to 254.68 kJ/mol and 255.88 kJ/mol, respectively.

Hydrogen desorption kinetics of MgH2 synthesized from modified waste magnesium

Chemical Engineering Department, Yıldız Technical University, Davutpasa Campus, 34210, Topkapı Istanbul, Turkey

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Hydrogen desorption kinetics of MgH2 synthesized from modified waste magnesium"}

In the present study, hydrogen desorption properties of magnesium hydride (MgH2) synthesized from modified waste magnesium chips (WMC) were investigated. MgH2...

Hydrogen desorption kinetics of MgH2 synthesized from modified waste magnesium

Publié en ligne: 17 oct. 2014

Pages: 385 - 390

DOI: https://doi.org/10.2478/s13536-014-0218-9

Mots clés
hydrogen desorption, magnesium hydride, kinetics, waste magnesium chips

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Hydrogen desorption kinetics of MgH2 synthesized from modified waste magnesium

Publié en ligne: 17 oct. 2014

Pages: 385 - 390

DOI: https://doi.org/10.2478/s13536-014-0218-9

Mots cléshydrogen desorption, magnesium hydride, kinetics, waste magnesium chips

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
hydrogen desorption, magnesium hydride, kinetics, waste magnesium chips