摘要：通过硫酸铜的热分解行为研究了纳米铁酸铜的催化机理。采用 共沉淀法制备不同物质的量比的纳米 CuFe₂O₄ 催 化 剂， 并 测 定 了 不 同成分和用量的催化剂对硫酸铜热分解温度及热分解表观活化能的 影 响。 通 过 X 射线衍射和扫描电镜对铁酸铜晶体进行表征，用 差 热 分 析（TG-DSC）法测定硫酸铜的分解热变化量以衡量催化剂活性 。 结果表明：Cu²⁺、Fe³⁺物质的量比为 1∶1，质量分数为 20%的 CuFe₂O₄ 对 CuSO₄ 的催化效果最佳， 该 条 件 下 CuSO₄ 的高温分解峰与低温分解峰重合，分解峰温度向低温方向移动了 29.5 ℃，表观分解热吸热量 降低了 112.1 J/g。 

关键词：纳米铁酸铜；催化；热分解

Abstract：By the study of the thermal decomposition behavior of CuSO₄， the catalytic mechanism of CuFe₂O₄ nano-particles was investigatied. The CuFe₂O₄ nano-particles catalysts with different Cu²⁺/Fe³⁺ molar ratios were prepared by homogeneous co-precipitation. The temperature and activa tion energy for thermal decomposition of CuSO₄ were examined under a series of catalysts in different dosage. The copper ferrite crystal was char acterized by XRD and SEM，the decomposing heat change of CuSO₄were obtained by TG-DSC method to evaluate the catalytic activity of CuFe₂O4. The results show that CuFe₂O₄ with the Cu²⁺/Fe³⁺ molar ratio of 1∶1 had superior catalytic properties and catalytic efficiency reached maxi mal when mixed 20% CuFe₂O₄（in mass fraction） into CuSO₄ crystals. In those conditions，the high and low temperature decomposition peaks of CuSO₄ were superposition. The low temperature decomposition peak was decreased 29.5 ℃ and the apparent heat of decomposition was decreasedby 112.1 J/g. 

Keywords：copper ferrite nano-particles；catalysis；thermal decomposition