高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (11): 2198.doi: 10.7503/cjcu20150596

• 物理化学 • 上一篇    下一篇

反应N+NH→N2+H的态-态量子动力学研究

胡茜茜, 杨俊英, 谢代前()   

  1. 南京大学化学化工学院, 理论与计算化学研究所, 介观化学教育部重点实验室, 南京 210093
  • 收稿日期:2015-07-30 出版日期:2015-11-10 发布日期:2015-10-26
  • 作者简介:联系人简介: 谢代前, 男, 博士, 教授, 博士生导师, 主要从事分子动态学研究. E-mail:dqxie@nju.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21273104, 21133006)和国家重点基础研究发展计划项目(批准号: 2013CB834601)资助

State-to-state Quantum Dynamics of Reaction N+NH→N2+H

HU Xixi, YANG Junying, XIE Daiqian*()   

  1. Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of Ministry of Education,School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
  • Received:2015-07-30 Online:2015-11-10 Published:2015-10-26
  • Contact: XIE Daiqian E-mail:dqxie@nju.edu.cn

摘要:

采用在MRCI/aug-cc-pVQZ水平上构建的N2H基态势能面, 并运用Chebyshev实波包法研究了N + NH→N2 + H反应的量子动力学, 如反应几率、 积分截面以及产物振转态分布等. 在50~500 K温度范围内, 该反应的速率常数随着温度升高而递增, 与基于其它势能面的理论结果吻合. 然而, 在室温条件下, 所有理论计算的速率常数均显著大于实验值.

关键词: 量子动力学, 波包, 反应截面, 速率常数

Abstract:

Quantum dynamics of reaction N+NH→N2+H was investigated based on the recently constructed potential energy surface(PES) of N2H(12A') by Chebyshev real wavepacket method. The reaction probabilities, integral and diffe-rential cross sections, and ro-vibrational state distributions of the product were reported and compared with previous theoretical results. Besides, the calculated rate constants monotonically increase with the temperature from 50 K to 500 K, consistent with the available theoretical results obtained from other PESs. However, all the calculated values are significantly larger than the only experimental data at room temperature.

Key words: Quantum dynamics, Wavepacket propagation, Cross section, Rate constant

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