Impact of proton: Capturing tobacco specific N-nitrosamines (TSNA) with HZSM-5 zeolite
Impact of proton: Capturing tobacco specific N-nitrosamines (TSNA) with HZSM-5 zeolite
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质子的影响：用 HZSM-5 沸石捕获烟草特有的 N-亚硝胺 (TSNA)
DOI：
10.1016/j.cej.2017.04.064
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发表时间：
2017-09
影响因子：
15.1
通讯作者：
Zhu Jian Hua
中科院分区：
文献类型：
--
作者：
Sun Xiao Dan;Li Shuo Hao;Wang Lei-jun;Gu Wen-bo;Shi Chun Ling;Dong Xin Yu Ming;Wang Yang-zhong;Wang Wei-miao;Yang Zheng-yu;Wang Ying;Zhu Jian Hua
利用HZSM-5分子筛对烟草特有的N-亚硝胺（TSNA）进行了液相吸附研究，发现HZSM-5分子筛具有较好的硅铝比和孔道结构，可以有效地吸附烟草特有的N-亚硝胺。该分子筛对N ′-亚硝基去甲烟碱（NNN）和4-甲基亚硝胺-1-3-吡啶-1-丁酮（NNK）的捕集率分别为84%和99%，明显优于NaZSM-5分子筛。采用FTIR和TG/MS技术研究了NNN和NNK在HZSM-5分子筛上的吸附和催化降解。NNK的N-N键在423-573 K范围内发生断裂，而在630 K时，由于吡啶与羰基之间的C-C键断裂，出现了吡啶碎片。此外，首次将HZSM-5分子筛喷涂在卷烟杆上，采用不同方式进行抽吸，评价其降低主流烟气中TSNA含量的作用，并与液体吸附进行比较。
HZSM-5 zeolite was used to conquer the challenge of liquid adsorption of tobacco specificN-nitrosamines (TSNA), either in aqueous solution or tobacco extract solution, offering a candidate with an optimal Si/Al ratio and channel structure to capture the carcinogens. It could trap 84% ofN′-nitrosonornicotine (NNN) and 99% of 4-methylnitrosamino-1-3-pyridyl-1-butanone (NNK) in aqueous solution, much better than that by NaZSM-5 zeolite. Both FTIR and TG/MS technologies were employed to study the adsorption and catalytic degradation of NNN and NNK by HZSM-5 zeolite. The N–N bond of NNK was broken in the range of 423–573 K and the pyridine fragments appeared at 630 K due to the breakage of C–C bond between pyridine and carbonyl groups. Besides, HZSM-5 zeolite was sprayed on the rod of cigarette and smoked with different manners for the first time, in order to assess its function of reducing TSNA content in mainstream smoke and compared with that of liquid adsorption.
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影响因子：
5.2
作者：
Sun Xiao Dan;Li Shuo Hao;Dong Xin Yu Ming;Wang Lei-jun;Gu Wen-bo;Wang Wei-miao;Yang Zheng-yu;Wang Ying;Zhu Jian Hua
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影响因子：
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通讯作者：
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