硼氢化钠水解制氢规律及工艺条件研究(Ⅰ)

Study on Regularities and Technology Conditions on Hydrolysis of Sodium Borohydride(Ⅰ)

在自行开发设计的硼氢化钠水解制氢实验装置上,采用单因素及正交实验研究,对反应的影响因素进行探讨,并运用极差分析和方差分析的方法综合讨论影响氢产率的工艺条件.实验结果表明:反应温度、反应时间、反应物浓度与催化剂用量比的交互作用、催化剂用量比对氢产率均有一定影响.当选用CoCl2作为催化剂,反应温度为40℃,反应时间为25 min,反应物质量分数为5%,m(催化剂)/m(反应物)为0.126,溶液pH值为7时,氢产率可达96%.

The device for hydrogen generation by studying the effect of all factors through single factor hydrolyzation of NaBt-h is designed and used for and orthogonal test. The technology conditions influencing H2 yield are discussed comprehensively by range analysis and variance analysis. The results indicate that the reaction temperature, reaction time, interaction between NaBt-h concentration and quality ratio of catalyst to reactant, quality ratio of catalyst to reactant can influence H2 yield. And H2 yield can be arrived to 96 % when COCl2 is selected as catalyst which ratio to the reactant is 0. 126, the reaction temperature 40℃, reaction time 25 min, NaBH4 concentration 5 % and pH 7.