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为了探索新型聚合物双键加氢催化材料,采用XRD和自制吸氢装置等对贮氢合金MlNi5-x(CoMnAl)x的组成、吸放氢性能及其催化加氢活性等进行了研究.MlNi5-x(CoMnAl)x的P-C-T曲线表明,合金具有较低的平台压力,稳定性好;对比合金表面处理前后的吸氢动力学曲线发现:MlNi5-X(CoMnAl)x吸氢初期速度较快,后期则随时间延长吸氢量缓慢增加,而经过[6M KOH+1%KBH4]处理或Pd修饰后则可迅速达到吸氢平衡.催化聚合物双键加氢性能研究表明,未处理合金对NBR溶液加氢氢化度为零,经过[6M KOH+1%KBH4]处理和钯修饰后的合金可对NBR、SBS、NR等聚合物双键加氢,氢化度分别为33.5%、32.3%、31.1%.说明合金表面组成及结构对其吸放氢性能和催化活性均有明显影响.
In order to explore a novel double bond hydrogenation catalytic material, the composition, hydrogen absorption and desorption properties and catalytic hydrogenation activity of MlNi5-x (CoMnAl) x hydrogen storage alloy were investigated by XRD, The PCT curve of -x (CoMnAl) x shows that the alloy has low platform pressure and good stability. Compared with the hydrogen absorption kinetics before and after the alloy surface treatment, it is found that the initial hydrogen absorption rate of MlNi5-X (CoMnAl) Hydrogen uptake gradually increased with time, but hydrogen equilibrium could be rapidly reached after [6M KOH + 1% KBH4] treatment or Pd modification.Studies on the hydrogenation performance of the double bond of the catalytic polymer showed that the unbleached hydrogenation of NBR The degree of hydrogenation of the solution was zero. Hydrogenation of the double bonds of NBR, SBS, NR and other polymers by [6M KOH + 1% KBH4] and palladium modified alloys gave hydrogenation degrees of 33.5%, 32.3%, 31.1 %, Indicating that the alloy surface composition and structure of its hydrogen absorption and desorption performance and catalytic activity have a significant impact.