【摘要】 考察了正戊烷异构化中Pt-ZrO2 /HM催化剂在不同条件下的催化性能 ,采用正交实验法确定了最佳反应条件 :反应温度为 2 75℃ ,反应压力为 1.5MPa,空速为 1.3h- 1 ,氢油物质的量比为 2 .0 ;在此条件下正戊烷转化率达到69.88% ,异戊烷收率为 67.68% ,反应选择性为 96.85 % ,液收率为 97.80 % .建立了正戊烷异构化一级反应动力学模型 ,正、逆反应表观活化能分别为 74.65kJ/mol和 81.3 2kJ/mol,表观频率因子分别为 2 .82 3 5 9× 10 6 和 5 .2 64 2 5× 10 6 ,验证结果表明 ,正戊烷在Pt-ZrO2 /HM催化剂上的异构化反应可用一级反应动学模型描述 .更多还原

【Abstract】 Performance of n-pentane isocatalyst at variety conditions were investigated. A mathematical orthogonal experimental method was used to obtain an optimum reaction conditions: reaction temperature is 275 ℃, reaction pressure 1.5 MPa, space velocity 1.3 h -1 and H 2/n-pentane molar ratio 2.0. At the conditions n-Pentane conversion is 69.88%, isopentane yield 67.68%, isopentane selectivity 96.85% and liquid product yield 97.80%. A first-order reversible kinetic model of pentane isomerization reaction was set up. The apparent active energies in the forward and reverse reactions are 74.65 kJ/mol and 81.32 kJ/mol respectively, and the rate constants are 2.823 59×106 and 5.264 25×106 respectively. The result showed that pentane isomerization reaction with catalyst could be described by this model.更多还原