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采用微孔-介孔复合材料降低卷烟烟气中的有害成分

     

摘要

Microporous-mesoporous composite material (MMM) was prepared from TEOS, with CTAB and TPABr used as templates, through simultaneous crystallization. The as-made MMM was characterized by N2 adsorption/desorption, XRD and FT-IR. The results showed that the MMM has composite pore structure combining both micropores and mesopores, and the pore sizes are mainly located at 0. 54 nm, 1. 4 nm, 2. 8 nm and 3. 7 nm. The specific surface area of the MMM was 361. 3 m2 · G-1 with a pore volume of 0. 347 cm3 · G-1 . In addition, the property of the MMM to remove harmful components in cigarette mainstream smoke has been investigated. Comparing with the reference cigarette (without MMM in filter) , the deliveries of harmful components in mainstream smoke of experimental cigarette (with MMM in filter, 5 mg · Cig-1) were reduced in varying degrees, in which the deliveries of NNK, B [a] P and phenol were reduced 24.34%, 26.25% and 43.40%, respectively, showing that the MMM was a promising filter additive.%以TEOS为硅源,CTAB、TPABr为模板,通过模板法,同步晶化制备了微孔一介孔复合材料(MMM).通过N2吸附脱附、XRD、FT-IR等对MMM进行了表征,并对MMM降低卷烟主流烟气中有害成分的性能进行了考察.研究结果表明,MMM具有微孔-介孔复合孔结构,孔径呈连续多峰分布,主要集中在0.54、1.4、2.8、3.7 nm左右,其比表面积为361.3 m2·g -1,孔体积为0.347 cm3·g-1.MMM作为卷烟滤嘴添加剂制成实验样烟,与滤嘴中未添加MMM的同牌号卷烟相比较,实验样烟主流烟气中多种有害成分释放量均得到不同程度的降低,其中NNK、B[a]P、苯酚释放量分别降低了24.34%、26.25%、43.40%,降害效果明显,具有广阔的应用前景.

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