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�������պ����ѧѧ�� 2000, Vol. 26 Issue (4) :416-419    DOI:
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Steric Effects in Rate Constants for Bimolecular Dissociation
ZHANG Jing-bai, LI Chun-xuan*
Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics

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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.
Keywords�� reaction kinetics   chemical reactions   dissociation   steric effects     
Received 1999-03-08;
About author: �ž���(1972-),��,����������,��ʿ��,100083,����.
�ž���, ���.��ⷴӦ���ʳ����еķ�λ����[J]  �������պ����ѧѧ��, 2000,V26(4): 416-419
ZHANG Jing-bai, LI Chun-xuan.Steric Effects in Rate Constants for Bimolecular Dissociation[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2000,V26(4): 416-419
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2000/V26/I4/416
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