沸石对主流烟气中挥发性亚硝胺及NO_x的吸附去除

Adsorotion and Removal of Volatile N—nitrosamines from Main-stream of Cigarette by Zeolites

采用程序升温脱附(TPD)及程序升温表面反应(TPSR)技术研究了NaY、NaZSM—5、NaA等分子筛对NO2、亚硝胺和香烟主流烟气的吸附作用。沸石对NO2、亚硝胺NPYR具有独特的吸附和催化能力,孔径、比表面是影响吸附量的重要因素。沸石对于主流烟气中NOx和亚硝胺的吸附比例关系受到孔径的制约。

NO2, N - nitrosamines and main-stream of cigarette was adsorpted by molecular sieve, such as NaY, NaZSM-5, NaA. This reaction adopted the technique of temperature programmed desorption （TPD）and temperature programmed surface reaction（TPSR）. Zeolites played a characteristic role in the adsorption and catalysis of NO2 and N- nitrosamines. The diameter of the pore and specific surface were the keyfactors to influencing adsorption volume. In main - stream of cigarette, the adsorption ratio between NOx and N - nitrosamines was limited by the pore diameter.