TY - JOUR
T1 - Improvement effects of TiCL on dehydrogenation of magnesium borohydride Mg(BH4)2
AU - Li, Hai Wen
AU - Matsumura, Daiiu
AU - Nishihata, Yasuo
AU - Akiba, Etsuo
AU - Orimo, Shin Ichi
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2013/12
Y1 - 2013/12
N2 - The dehydrogenation property of Mg(BH4)2 as a function of the added TiCl3 content was systematically investigated from viewpoints of kinetics and thermodynamics. The dehydrogenation temperature decreased when the TiCl3 content x was increased from 0.02 to 0.20 mol, and the initial dehydrogenation temperature notably decreased to approximately 350 K at x=0.20. The main improvement effects of TiCl3 on the dehydrogenation properties of Mg(BH4)2 changed from kinetic to thermodynamic aspects with the increasing addition content. That is, Mg(BH4)2 tended to react with TiCl3 to produce thermodynamically unstable TixMg(1-3x/2)(BH 4)2 (x=0̃0.67). With relatively high addition content (x≥>0.10), thermodynamic destabilization of Me(BH4)? becomed more dominant. However, with relatively low addition content (x<0.10). TiB? formed from the dehydrogenation of TixMg( 1 3x/ 2) (BH4)2 mainly showed kinetic improvement effect.
AB - The dehydrogenation property of Mg(BH4)2 as a function of the added TiCl3 content was systematically investigated from viewpoints of kinetics and thermodynamics. The dehydrogenation temperature decreased when the TiCl3 content x was increased from 0.02 to 0.20 mol, and the initial dehydrogenation temperature notably decreased to approximately 350 K at x=0.20. The main improvement effects of TiCl3 on the dehydrogenation properties of Mg(BH4)2 changed from kinetic to thermodynamic aspects with the increasing addition content. That is, Mg(BH4)2 tended to react with TiCl3 to produce thermodynamically unstable TixMg(1-3x/2)(BH 4)2 (x=0̃0.67). With relatively high addition content (x≥>0.10), thermodynamic destabilization of Me(BH4)? becomed more dominant. However, with relatively low addition content (x<0.10). TiB? formed from the dehydrogenation of TixMg( 1 3x/ 2) (BH4)2 mainly showed kinetic improvement effect.
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U2 - 10.2320/jinstmet.JC201305
DO - 10.2320/jinstmet.JC201305
M3 - Article
AN - SCOPUS:84893619040
SN - 0021-4876
VL - 77
SP - 627
EP - 630
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 12
ER -