【摘要】 完全还原的NixCu1-xFe2O4(x=0.25,0.5,0.75)可用来分解CO2。采用共沉淀法制备了NixCu1-xFe2O4(x=0.25,0.5,0.75)系列铁酸盐的纳米微粒,利用H2-TG数据分析NixCu1-xFe2O4(x=0.25,0.5,0.75)中Cu2+的还原反应动力学数据,得出表观活化能Ea并不是单纯随着Ni2+或Cu2+含量的变化而变化,当x=0.25时反应活化能具有最大值。通过CO2-TG比较不同样品经H2完全还原后分解CO2的活性,得出Ni0.5Cu0.5Fe2O4具有最低的起始反应温度和最大的分解活性,并采用XRDRietveld拟合方法对Ni0.5Cu0.5Fe2O4的完全还原产物和分解CO2产物进行物相分析。更多还原

【Abstract】 Completely reduced NixCu1-xFe2O4(x=0.25,0.5,0.75)can be used to decompose CO2.Ultra-fine NixCu1-xFe2O4 nano-particles were prepared by coprecipitation method.The kinetic parameters of Cu2+ reduction were calculated by H2-TG data.It is found that Ea has the maximum value at x=0.25.The results of CO2-TG display that Ni0.5Cu0.5Fe2O4 has the lowest initial CO2 decomposition temperature and the highest decomposition activity.Furthermore,the phase composition of the product was examined by XRD Reitveld Analysis.更多还原