13X分子筛对烟气中低分子醛酮的选择性吸附研究

Study on the Selective Adsorption of Low-Molecular Aldehydes and Ketones from Cigarette Smoke Using 13X Molecular Sieve

为降低卷烟烟气中有害成分低分子醛酮化合物的含量和研究X型分子筛在卷烟减害中的应用,将13X型分子筛添加到卷烟嘴棒中,分析其对主流烟气中八种低分子醛酮化合物含量的影响。结果显示13X分子筛对低分子醛酮有明显的脱除作用。通过进一步研究13X分子筛对烟气中苯酚和苯并(α)芘的吸附作用,揭示了13X分子筛对低分子醛酮的选择性吸附与其因表面静电引力优先吸附极性物质的特性以及低分子醛酮的低熔沸点密切相关。烟气三项指标分析表明,13X分子筛对烟气中的焦油和烟碱含量影响不大,这有利于保持卷烟的香气。

To eliminate the low-molecular aldehydes and ketones in mainstream cigarette smoke and study the effect of 13X molecular sieve on the adsoption of harmful components from smoke,13X molecular sieve was introduced into the filter tip and the corresponding influences on the content of the low-molecular aldehydes and ketones in mainstream cigarette smoke were studied.The result showed that 13X molecular sieve could effectively eliminate the low-molecular aldehydes and ketones from the mainstream cigarette smoke.The further study on the adsorption of phenol and benzopyrene from cigarette smoke using 13X molecular sieve revealed that the preferential adsorption of low-molecular aldehydes and ketones is associated with the selective adsorption of polar molecules on 13X molecular sieve because of its electrostatic attraction and the low melting and boiling points of these aldehydes and ketones.The analysis result about the three indicators of mainstream cigarette smoke revealed that 13X has no obvious influence on the content of tar and nicotine,which are favorable to hold the flavor of cigarette.