The Pd/C catalyst was prepared by liquid phase reduction method and applied to the catalytic hydrogenation kinetics of 2,3-dichloropyridine under the conditions of pressure 0.6 MPa,temperature range 303～323 K and rotation speed 800 r/min.The kinetic reaction model was established and the ki-netic parameters were estimated.Comparing the obtained empirical equation with the actual reaction rate,the results show that the reliability of the kinetic model is good.Among them,the catalytic hydrogenation of 3-chloropyridine is a 2.1 order reaction,and the reaction rate equation is as follows:r =1.18×108×Mcat×e-5375.7/T C2.13cp activation energy of 44.14 kJ/mol,2-chloropyridine catalytic hydrogenation reaction for level 1,reaction rate equation is r =4.696×1011×Mcat×e-8693.3/T C2cp,activation energy of 72.28 kJ/mol,2,3-dichloropyridine as catalyst hydrogenation reaction for level 3,reaction rate equation is r =2.05×1015×Mcat×e-9758.6/T C32.3 activation energy of 81.13 kJ/mol.
关键词
氯化吡啶/催化加氢/反应级数/活化能/动力学
Key words
2,3-dichloropyridine/catalytic hydrogenation/reaction order/activation energy/equation of dynamics
维普
万方数据