五水硫酸铜脱水机理及硫酸铜高温分解的热力学研究

The study of thermodynamics on the dehydration mechanism of CuSO_4·5H_2O and the heat decomposition of CuSO_4

利用热分析法研究了五水硫酸铜高温分解过程,并对其脱水机理及硫酸铜在高温下分解机理进行了探索。研究表明:在升温速率为5℃/min时,五水硫酸铜的脱水过程分两个阶段,第一个阶段直接失去四个结晶水,这可能是由于升温速率过快的原因。硫酸铜的高温分解分为两步,第一步生成物为CuO和SO_3,第二步SO_3继续分解生成SO_2和O_2。

The dehydration process of CuSO_4？5H_2O was studied using thermal analysis method,dehydration mechanism and the heat decomposition process of CuSO_4 under high temperature were researched.Research shows that in the heating rate for 5℃/min,the dehydration process of CuSO_4？5H_2O can be divided into two stages,the first phase lost four crystal water,this may be due to high heating rate.The decomposition of CuSO_4 require two-stages,the first step generated CuO and SO_3 reaction,then,to generate SO_2 and O_2.