物理化学学报 >> 2004, Vol. 20 >> Issue (08S): 946-952.doi: 10.3866/PKU.WHXB200408zk10

综述 上一篇    下一篇

沸石分子筛吸附和催化降解亚硝胺

朱建华;徐杨;王英;周仕禄;周春芳   

  1. 南京大学化学化工学院化学系,南京 210093
  • 收稿日期:2003-11-04 修回日期:2003-12-29 发布日期:2004-08-15
  • 通讯作者: 朱建华 E-mail:jhzhu@netra.nju.edu.cn

Adsorption and Catalytic Degradation of Nitrosamines by Zeolites and Molecular Sieves

Zhu Jian-Hua;Xu Yang;Wang Ying;Zhou Shi-Lu;Zhou Chun-Fang   

  1. College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093
  • Received:2003-11-04 Revised:2003-12-29 Published:2004-08-15
  • Contact: Zhu Jian-Hua E-mail:jhzhu@netra.nju.edu.cn

摘要: 综述了近年来国内外在使用沸石和介孔分子筛吸附和催化分解以及检测亚硝胺方面的新进展.亚硝胺属于强致癌物,是吸烟导致癌症的重要原因.本文剖析了沸石对亚硝胺的选择性吸附以及大体积亚硝胺在小微孔沸石上的“嵌入式”吸附模式,探讨了沸石在气相和液相中吸附挥发性亚硝胺的规律和影响因素;研究了介孔分子筛材料对于催化降解烟草特有亚硝胺的高活性,阐述了修饰金属氧化物对于提高沸石吸附或催化分解亚硝胺能力的促进作用,并展望消除亚硝胺污染功能新材料的发展方向.

关键词: 沸石, 介孔分子筛, 亚硝胺致癌物, 选择性吸附, 催化降解, 生态环境保护

Abstract: In this article some latest research progresses in adsorption and catalytic degradation of nitrosamines by use of zeolites and mesoporous molecular sieves are reviewed, along with the oversea and domestic development of microanalysis of nitrosamines. Nitrosamines in tobacco smoke are strong carcinogenic compounds inducing cancer for smoking, so zeolite is recently employed, as additive to eliminate nitrosamines in smoke, to protect environment and public health. The selective adsorption of nitrosamines on zeolite, especially the inserting adsorption model of bulky nitrosamines on the zeolites with small pore size is introduced in this review. For the selective adsorption by zeolite of the volatile nitrosamines in gaseous phase or solution, some factors and their influences on the adsorption are briefly discussed. The high activity of mesoporous molecular sieves in catalytic degradation of tobacco specific nitrosamines is also presented and attributed to their large pore sizes. Moreover, the modifications of zeolite with metal oxides such as copper oxide are introduced, which significantly promote the selectively adsorption of volatile nitrosamines, and are beneficial for removal of the nitrosamines in smoke of cigarette. Finally, the development of new functional materials to eliminate the pollution of nitrosamines is prospected.

Key words: Zeolite, Mesoporous molecular sieves, Nitrosamines carcinogenic compounds, Selective adsorption, Catalytic degradation, Environmental protection