北京航空航天大学学报 ›› 2000, Vol. 26 ›› Issue (4): 416-419.

• 论文 • 上一篇    下一篇

离解反应速率常数中的方位因素

张劲柏, 李椿萱   

  1. 北京航空航天大学 飞行器设计与应用力学系
  • 收稿日期:1999-03-08 发布日期:2010-11-19
  • 作者简介:张劲柏(1972-),男,江西吉安人,博士生,100083,北京.

Steric Effects in Rate Constants for Bimolecular Dissociation

ZHANG Jing-bai, LI Chun-xuan   

  1. Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics
  • Received:1999-03-08 Published:2010-11-19

摘要: 以碰撞理论为基础探讨了结构方位因素对离解反应速率常数的影响,建立了计及方位特征的离解反应模型,计算对比了热平衡假设下空气中几个典型的离解反应的Arrhenius图.结果表明,在所选实例中,除了反应N2+N和O2+O外,考虑方位因素后确实能够更好地理论估算出反应速率常数.对上述例外文中做了一定的讨论.

Abstract: The steric effects for bimolecular dissociation were investigated via the collision theory, and a sterically dependent bimolecular dissociation model was established. In order to validate the developed model, the rate constants of typical reactions taken place in air under thermal equilibrium condition were then calculated based on the new model, and were compared with the results obtained by the classical collision theory, as well as the available experimental data. As shown by the Arrhenius plots presented in this paper that the new model would provide more accurate results than the classical collision theory, when compared with the experimental data. The plots also depict some exceptional cases in the reactions of N2+N and O2+O, where there are discrepancies among the theoretical and experimental data. These discrepancies are also discussed in the present paper.

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发