论文部分内容阅读
通过差热/热重联机 (DTA/TGA)和差示扫描量热法 (DSC)测定几种盐(Na2SO4·10H2O、CuSO4·5H2O、Na2S2O3·5H2O)的失水过程 ,对水合盐脱水过程几种可能的类型进行探讨。研究表明低温 (100℃以下 )水合盐脱水有两种类型 ,一种直接失去气态水 ,另一类先脱去液态水再进一步变为气态水。并从热力学上理论分析两类脱水过程的原因。
The dehydration process of several salts (Na2SO4 · 10H2O, CuSO4 · 5H2O, Na2S2O3 · 5H2O) was determined by DTA / TGA and DSC. The possible types are discussed. Studies have shown that there are two types of dehydration of hydrated salt at low temperature (below 100 ° C), one of which directly loses gaseous water and the other first removes liquid water and further changes to gaseous water. The reason of two kinds of dehydration process is analyzed from thermodynamics theory.