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报道了同时采用催化剂和限域基体对氨硼烷(BH_3NH_3)脱氢性能的影响.结果发现,非贵金属催化剂和孔状限域基体能显著改变氨硼烷的储氢性能.填充在介孔二氧化硅中含Co催化剂的氨硼烷在75℃或90℃能释放出4%或9%纯氢,进一步用锂修饰介孔二氧化硅可使氨硼烷脱氢速度更快,但产生氢气、氨气和二硼烷的混合气.氨硼烷热分解活化能的降低导致填充在介孔二氧化硅中含催化剂的氨硼烷具有较快的动力学和热力学行为.
The effect of both catalyst and localized matrix on the dehydrogenation of ammonia borane (BH_3NH_3) was reported. It was found that the non-noble metal catalyst and pore-limited matrix significantly changed the hydrogen storage capacity of ammonia borane. Ammonia borane containing Co catalyst in silica can release 4% or 9% pure hydrogen at 75 ° C or 90 ° C. Further modification of the mesoporous silica with lithium results in faster dehydration of ammonia borane but with hydrogen , A mixture of ammonia and diborane.The reduction of activation energy of ammonia borane leads to faster kinetic and thermodynamic behavior of ammonia-borane containing catalyst in mesoporous silica.