【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.更多还原

【Abstract】 In this article some latest research progresses in adsorption and cataly tic degradation of nitrosamines by use of zeolites and mesoporous mol ecular sieves are reviewed,along wi th the oversea and domestic develop-ment of microanalysis of nitrosamin es.Nitrosamines in tobacco smoke are strong carcinogenic compounds induc-ing cancer for smoking,so zeolite is recently employed,as additive to eliminate nitrosamines in smoke,to pr otect environment and public health.The s elective adsorption of nitrosamines on zeolite,especially the inserting adsorp-tion model of bulky nitrosamines on t he zeolites with small pore size is in troduced in this review.For the sele ctive adsorption by zeolite of the volatil e nitrosamines in gaseous phase or so lution,some factors and their influ ences on the adsorption are briefly discusse d.The high activity of mesoporous mo lecular sieves in catalytic degradation of tobacco specific nitrosamines is also presented and attributed to their large pore sizes.Moreover,the modi fications of zeolite with metal oxides such as c opper oxide are introduced,which significantly promote the selectively ad-sorption of volatile nitrosamines,and are beneficial for removal of the nitrosamines in smoke of cigarette.Finally,the development of new functional ma terials to eliminate the pollution o f nitrosamines is prospected.更多还原