甲烷部分氧化过程的热力学

对杂多酸与醋酸混合溶剂体系,碘为催化剂的甲烷液相部分酯化过程进行了热力学计算。在298.15—1 000 K温度下,分别计算了甲烷部分氧化反应可能存在的4条反应途径的反应焓变,吉布斯自由能变及平衡常数。结果表明,甲烷液相部分氧化反应中,经由甲烷与碘生成中间物碘甲烷,碘甲烷再与醋酸酯化合成醋酸甲酯的过程是可以实现的,为提高甲烷转化率需改进控制步骤甲烷与碘生成碘甲烷的反应速率。

Thermodynamics for partial oxidation process of methane

In the mixed solvent of heteropoly acid(HPA) and acetic acid,the partial oxidation process of methane to methyl acetate in liquid phase with iodine as catalyst was calculated by using thermodynamics methods.At 298.15-1 000 K,the enthalpy,Gibbs free energy and equilibrium constant that may exit in four reaction paths were calculated respectively.The results indicate that in the partial oxidation process of methane,the process for methane reacted with iodine to methyl iodide and then methyl iodide reacted wit...