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以Ti O2负载的Pd-Fe为催化剂,考察了反应温度和催化剂用量对3-氯-4-氟硝基苯常压加氢反应的影响,拟合实验数据并建立了动力学方程,然后对动力学方程进行了统计学检验。结果表明,在3-氯-4-氟硝基苯0.1 mol,乙醇80 mL,催化剂0.26 g,氢气分压0.1 MPa的条件下,加氢反应对3-氯-4-氟硝基苯表现为一级,加氢反应的活化能为19 959.4 J/mol,指前因子为56.79。所获得的动力学方程能较好地描述3-氯-4-氟硝基苯的常压加氢反应。
The effects of reaction temperature and amount of catalyst on the atmospheric hydrogenation of 3-chloro-4-fluoronitrobenzene were investigated by using Ti-supported Pd-Fe as catalyst. The experimental data were fitted and the kinetic equations were established. Then, Kinetic equations were statistically tested. The results showed that under the conditions of 0.1 mol of 3-chloro-4-fluoronitrobenzene, 80 mL of ethanol, 0.26 g of catalyst and partial pressure of 0.1 MPa of hydrogen, the reaction of 3-chloro-4-fluoronitrobenzene with At the first stage, the activation energy of the hydrogenation reaction is 19 959.4 J / mol and the pre-exponential factor is 56.79. The obtained kinetic equation can better describe the atmospheric hydrogenation of 3-chloro-4-fluoronitrobenzene.