金属有机骨架化合物MIL-101-Fe对LiBH4储氢性能的影响

来源 :第十七届全国化学热力学和热分析学术会议 | 被引量 : 0次 | 上传用户:maiapink
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  本体系研究了含有三价铁的金属有机骨架化合物MIL-101-Fe 做催化剂,对LiBH4储氢性能的影响。该铁基催化剂用新合成方法微波法80 度下制备,具有较大的比表面积。其作为催化剂,用热分析仪研究LiBH4 体系的热力学性质,结果发现LiBH4 的脱氢温度和动力学储氢性能均得到有效的提高。当掺杂33%的MIL-101-Fe 时,体系脱氢温度较球磨后的纯LiBH4 降低了54 度,且提高了放氢量。另外用物理吸附仪、XRD、TG、PCT 及SEM 对铁基催化剂和LiBH4 进行表征,分析了其脱氢温度和脱氢动力学性能改善的原因,主要是因为微波法合成的MIL-101-Fe 的颗粒尺寸是纳米级,改变了催化剂与LiBH4 体系的接触作用,从而改变了LiBH4 脱氢温度和动力学储氢性能。
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