摘要
研究了Cl-和NO-3阴离子对NaBH4溶液现场制氢反应的影响,发现在制氢反应过程中存在着生成金属硼化物和生成金属氢氧化物的竞争反应。当溶液中阴离子为Cl-时,金属离子在催化NaBH4溶液制氢反应时将与硼结合,促使其活化为高活性金属硼化物,能有效促进制氢反应;当溶液中的阴离子为NO-3时,将诱导金属离子生成没有催化活性的金属氢氧化物,抑制制氢反应。
The anion effect of Cl^- and NO3^- on hydrogen generation from sodium borohydride solution was studied, It is found that there are two competitive reactions, which produce metal borides and metal hydroxides, respectively. Cl^- can help produce metal bofides in the solution, which generates high activities to accelerate the following hydrolytic reaction. While NO3^- can induce the producing of metal hydroxides, which has no catalytic activities and will suppress the hydrogen generation reaction.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2006年第10期40-42,44,共4页
Modern Chemical Industry
基金
国家"973"计划(2002CB211800)
北京理工大学优秀青年教师资助计划(000Y05-21)项目
关键词
燃料电池
硼氢化钠
制氢
阴离子效应
fuel cell
sodium borohydride
hydrogen generation
anion effect
