低碳烷烃无氧芳构化的热力学研究

Thermodynamic Investigation on Light Paraffins Aromatization under Non-oxidative Condition

计算了低碳烷烃无氧芳构化中的各反应标准摩尔生成焓、标准摩尔吉布斯自由能、平衡常数和平衡转化率。计算结果表明,温度是影响反应热力学的重要因素,较高温度有利于烷烃的转化和芳烃的生成,但温度太高将有较多的积炭生成,要想得到较高的芳烃收率,需要一个合适的反应温度。

The standard enthalpy, standard Gibbs free energies, equilibrium constants and equilibrium conversion of reactions concerned on light paraffins aromatization under non-oxidative condition were calculated. The results showed that the temperature was the key factor which affects the reaction thermodynamics. The higher ternperature was propitious for the conversion of paraffins and the production of aromatic hydrocarbon, however, the more carbon deposit was produced if the temperature was too high. A suitable reaction temperature was prerequisite for obtaining a higher yield of aromatic hydrocarbon.