物理化学学报 >> 2004, Vol. 20 >> Issue (08S): 936-938.doi: 10.3866/PKU.WHXB200408zk08

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大气臭氧层破坏中冰晶表面反应的机理

赵新生   

  1. 北京大学化学与分子工程学院,分子动态与稳态结构国家重点实验室,北京 100871
  • 收稿日期:2003-04-22 修回日期:2003-05-26 发布日期:2004-08-15
  • 通讯作者: 赵新生 E-mail:zhaoxs@chem.pku.edu.cn

The Mechanisms on the Heterogeneous Reactions in Atmospheric Ozone Depletion

Zhao Xin-Sheng   

  1. State Key laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2003-04-22 Revised:2003-05-26 Published:2004-08-15
  • Contact: Zhao Xin-Sheng E-mail:zhaoxs@chem.pku.edu.cn

摘要: 极地云表面催化大气平流层中的一些反应,产生出HOCl和Cl2,它们被光解而释放出消耗臭氧的元凶Cl原子.冰晶表面可以催化这些反应的传统解释源于诺贝尔奖获得者Molina的离子催化假设.但是,越来越多的事实表明,离子催化的机理是不全面的.赵新生小组首先提出了冰表面结构催化的新机理,该机理为以后新的实验和理论所证实.本文简短回顾了近几年研究的进展.

关键词: 大气臭氧破坏, 冰晶表面, 反应机理

Abstract: Certain reactions are catalyzed on the polar stratospheric clouds to produce HOCl and Cl2 which can be turned into Cl by the UV light from the sun, and Cl is believed to be the arch-criminal in the atmospheric ozone depletion. The traditional ion-catalysis mechanism was based on the suggestion by Molina, a Nobel Prize laureate. However, more and more facts have indicated that this mechanism needs to be revised. Zhao Xin-Sheng's group first proposed a mechanism of structure catalysis, which relies on the surface structure of the ice. The mechanism has been confirmed by new experimental and theoretical studies. This paper briefly reviews some key development in recent years.

Key words: Atmospheric ozone depletion, Ice surface, Reaction mechanism