一氧化碳偶联再生反应动力学研究

采用常压连续流动气液反应器,测定了CO气相偶联亚硝酸乙酯再生反应的宏观动力学数据,建立了相应的宏观动力学模型R_A=K_(pNO)反应的活化能E_a=19.46kJ/mol,指前因子A=0.341mol/(m~3·Pa·s).根据气液反应双膜理论,对反应过程进行了分析和参数计算.结果表明,再生反应为一级快反应,反应区在液膜内,反应速率主要受液膜传质控制.求出“本征”反应的活化能为E_a=22.86kJ/mol,指前因子A=1.741×10~8s~(-1).

KINETICS OF REGENERATION REACTION FOR CO COUPLING

Reaction kinetics data were measured for the regeneration reaction of ethyl nitrite used for the catalytic coupling reaction of carbon monoxide in an atmospheric flowing gas -liquid reactor. The corresponding macroscopic kinetic model was established as the form RA=KpNO with activation energy of 19. 46 kJ/mol and frequency factor of 0. 341 mol/(m3 ·Pa· s). Parameter calculations were carried out with a double - film model of gas - liquid reaction. The results show that the regeneration reaction is a first order quick reaction and the reaction rate is mainly controlled by mass transfer in the liquid film. The activation energy of the intrinsic reaction is 22. 86 kJ/mol and the frequency factor is 1. 741×108s-1.