铵盐提高氢棒产氢能力的初步研究

Hydrogen productivity of hydrogen-rich sticks increased by ammonium salt

目的检测铵盐溶液对氢棒产氢的催化效果,并分析溶液中含氢量与含氧量、氧化还原电位、p H等之间的相互关系。方法将氢棒分别置于不同浓度氯化铵、硫酸铵、碳酸铵、碳酸氢铵、碳酸氢钠和亚硫酸钠等溶液的PET瓶中,经40℃水浴锅反应0、2、4、6、8和10 h,之后立即检测溶液中的上述4项指标。结果溶液中含氢量随反应时间和铵盐溶液浓度的增大呈递增趋势,而含氧量和氧化还原电位则随含氢量的增加呈递减趋势,且含氢量与含氧量呈显著负相关(r=-0.984);溶液p H随含氢量的增加而增大。结论铵盐对氢棒与水的反应具有良好的催化作用,氯化铵催化作用最强,硫酸铵次之,碳酸铵、碳酸氢铵较弱。该研究为氢棒在不同溶液中制氢能力提供了详实的补充数据;同时为深入研究不同浓度富氢溶液的功能及作用奠定了基础。

Objective To measure the catalytic effect of ammonium salt solution on hydrogen production,and analyze the relationships between hydrogen concentration and oxygen concentration,oxidation-reduction potential,and p H in solution.Methods Magnesium and water reacted at different concentrations of NH_4Cl,（ NH_4）_2 SO_4,NH_4 HCO_3,（ NH_4）_2 CO_3,NaHCO_3 and Na_2SO_3 in 40℃ water bath for 0,2,4,6,8 and 10 hours,and above-mentioned four indicators of ammonium salt solution were measured after these reactions. Results The hydrogen concentration in the solution increased with the reaction time and the concentration of the ammonium salt solution. Oxygen concentration and oxidation-reduction potential decreased. The hydrogen concentration in the solution was significantly negatively correlated with the oxygen concentration（ r =-0. 984）. p H increased with the hydrogen concentration in the ammonium salt solution. Conclusion The ammonium salt solution has a good catalytic effect on magnesium and water reaction. NH_4Cl has the strongest catalytic effect under the same reaction conditions,followed by（ NH4）2 SO4,NH4 HCO3 and（ NH_4）_2CO_3. Thus,this study can provide detailed data on hydrogen production in different solutions.