TY - JFULL AU - Wipada Ploysuksai and Pramoch Rangsunvigit and Santi Kulprathipanja PY - 2012/5/ TI - Effects of TiO2 and Nb2O5 on Hydrogen Desorption of Mg(BH4)2 T2 - International Journal of Materials and Metallurgical Engineering SP - 310 EP - 315 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/12754 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 64, 2012 N2 - In this work, effects of catalysts (TiO2, and Nb2O5) were investigated on the hydrogen desorption of Mg(BH4)2. LiBH4 and MgCl2 with 2:1 molar ratio were mixed by using ball milling to prepare Mg(BH4)2. The desorption behaviors were measured by thermo-volumetric apparatus. The hydrogen desorption capacity of the mixed sample milled for 2 h was 4.78 wt% with a 2-step released. The first step occurred at 214 °C and the second step appeared at 374 °C. The addition of 16 wt% Nb2O5 decreased the desorption temperature in the second step about 66 °C and increased the hydrogen desorption capacity to 4.86 wt% hydrogen. The addition of TiO2 also improved the desorption temperature in the second step and the hydrogen desorption capacity. It decreased the desorption temperature about 71°C and showed a high amount of hydrogen, 5.27 wt%, released from the mixed sample. The hydrogen absorption after desorption of Mg(BH4)2 was also studied under 9.5 MPa and 350 °C for 12 h. ER -