Improvement effects of TiCL on dehydrogenation of magnesium borohydride Mg(BH4)2

Hai Wen Li, Daiiu Matsumura, Yasuo Nishihata, Etsuo Akiba, Shin Ichi Orimo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)627-630
Number of pages4
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume77
Issue number12
DOIs
Publication statusPublished - Dec 1 2013

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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