电镀法制备合金催化剂用于硼氢化钠水解制氢实验  

Hydrogen Generation from NaBH_4 Solution with Electroplated Alloy Catalysts

作　　者：郭跃萍[1] 崔振凯[1] 徐向阳[1] 冯庆华[1] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000

出　　处：《实验室研究与探索》2015年第1期14-17,共4页Research and Exploration In Laboratory

基　　金：中央高校基本科研业务费专项基金(lzujbky-2014-180);兰州大学磁学与磁性材料教育部重点实验室开放课题(LZUMMM2014004)

摘　　要：利用电镀法制备合金催化剂,并将其用于硼氢化钠水解制氢气的催化反应,制备的氢气可以充当质子交换膜燃料电池的氢源。通过改变镀液的p H值、电流密度,沉积时间等工艺参数,考察了各项工艺参数对制氢速率的影响。实验发现,随着镀液中的p H值变化,载体表面得到具有不同形貌的催化剂颗粒,当p H6.5时,得到的催化剂颗粒最小,得到最大的制氢速率。同样考察了电流密度和沉积时间对制氢速率的影响,发现电流密度0.1 A/cm2、沉积时间2.5 min时得到的催化剂具有最佳的制氢效率。The alloy catalysts were electroplated and were used in the hydrogen generation from Na BH4 solution,and were the hydrogen supply for PEMFC utilization. The impact of p H,the cathodic current and deposition time were investigated. The experimental results revealed that the shape of the catalysts was changed by changing p H,and the optimized p H value was 6. 5. And the optimized cathodic current density was 0. 1 A / cm2,and the deposition time was no longer than 2. 5 min. The experimental design combined traditional preparation technology of chemistry and chemical engineering with the frontiers scientific research. It can be applied in comprehensive experiment training for the professional of chemistry and chemical engineering. The experiment helped students to be familiar with the traditional process and understand its new applications in the scientific frontier.

关 键 词：电镀法 硼氢化钠 制氢 实验设计 

分 类 号：TQ016.1[化学工程]