NaBH_4水解制氢泡沫镍载钌催化剂

研究了泡沫镍载钌催化剂制备过程中,RuCl3溶液浓度、pH值和浸渍时间对催化剂性能的影响,以及反应放热与体系温度之间的关系.结果表明,当0.2 g泡沫镍在浓度为0.025 mol.L-1、pH值为5～7的RuCl3溶液中浸渍25 h后,制备出的催化剂在质量分数15%NaBH4、3%NaOH溶液中的平均制氢速率可达到600 mL.min-1.用该催化剂在20 mL NaBH4碱性溶液中使用时,水解放出的热量可使反应体系温度达到80℃.

Ru-Ni foam catalyst for hydrogen generation from hydrolysis of sodium borohydride

The effects of RuCl_3 solution concentration, pH value, and soaking time on the catalyst performance were studied during the preparation of Ru-Ni foam catalysts. The relationship between exothermic reaction and system temperature was also discussed. It was indicated that the average hydrogen generation rate of the catalyst prepared with 0.2 g of Ni foam in 0.025 mol·L~(-1) RuCl_3 solution with pH values of 5 to 7 for a soaking time of 25 h was 600 mL·min~(-1) in the solution of 15% NaBH_4 and 3% NaOH. When the catalyst was immersed in 20 mL of NaBH_4 solution, the energy released form hydrolyzation could make the system temperature increase to 80 ℃.