【摘要】 采用机械球磨法制备了Mg（AlH₄）₂,分别考察了单一TiB₂催化、NaAlH₄催化以及NaAlH₄与TiB₂协同催化对Mg（AlH₄）₂放氢温度的影响.TPD测试表明,单一TiB₂催化、NaAlH₄催化均能使Mg（AlH₄）₂的放氢温度降低10℃左右;而当20%的NaAlH₄与5%的TiB₂（摩尔百分比）协同催化时,Mg（AlH₄）₂的放氢温度由146C降低至94℃,降幅达到52℃.更多还原

【Abstract】 Mg（AlH₄）₂ was prepared by ball milling.The effect of TiB₂ and NaAlH₄ on the dehydriding temperature of Mg（AlH₄）₂ was studied.When the catalyst was only 20%（mol） NaAlH₄ or 5%（mol） TiB₂,the dehydriding temperature of Mg（AlH₄）₂ were reduced about 10℃.While with the existence of 20%（mol） NaAlH₄ and 5%（mol） TiB₂,the dehydriding temperature of Mg（AlH₄）₂ decreased from 146℃to 94℃.There is a synergistic function between NaAlH₄ and TiB₂ for the catalysis of the dehydrogenation reaction of Mg（AlH₄）₂.更多还原