硝基苯催化加氢制苯胺的热力学分析

用基团估算法计算了硝基苯的热力学数据。对硝基苯催化加氢制苯胺进行了比较详细的热力学分析,首次建立了该反应的反应焓变、Gihbs自由能以及反应平衡常数的变化与反应温度的关系。得出该反应为自发放热反应,反应温度越高,趋于热力学平衡程度越低。

Thermodynamic analysis for preparation of aniline with Catalytic hydrogenation of nitrobenzene

Thermodynamic data of nitrobenzene was calculated with group contribution.In this paper,catalytic hydrogenation of nitrobenzene aniline carried out a more detailed thermodynamic analysis,for the entire process has an important guiding significance.The use of thermodynamic principle,first established the relationship among reaction enthalpy,Gibbs free energy,as well as changes in the equilibrium constant with reaction temperature.Obtained results that it was the spontaneous exothermic reaction and the higher the temperature the lower the degree of thermodynamic equilibrium.