Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Shanghai New Tobacco Product Research Institute, Shanghai 200082, China.
J Hazard Mater. 2019 Mar 5;365:196-204. doi: 10.1016/j.jhazmat.2018.10.095. Epub 2018 Nov 1.
The high-efficiency capture of Tobacco Specific Nitrosamines by Hβ zeolite in solution is reported for the first time, along with the adsorption of 4-methylnitrosamino-1-3-pyridyl-1-butanone in aqueous solution. Different from other zeolites such as NaZSM-5, the specific pore size of Hβ exerted a crucial function endowing the zeolite a higher removal of TSNA and selectivity of NNK. The adsorption thermodynamics of NNK by Hβ in aqueous adsorption was fitted to Temkin adsorption model with a linearly decreasing isosteric heat of adsorption. In addition, the adsorptive capacity of Hβ zeolite for NNK reached over 70 mg g offering a powerful sorbent of TSNA to protect environment.
首次报道了β沸石在溶液中对烟草特有亚硝胺的高效捕获，以及在水溶液中对 4-甲基亚硝胺-1-(3-吡啶基)-1-丁酮的吸附。与其他沸石如 NaZSM-5 不同，β沸石的特殊孔径起着至关重要的作用，赋予了沸石更高的 TSNA 去除率和 NNK 的选择性。β沸石在水溶液中的吸附热力学符合 Temkin 吸附模型，吸附热呈线性下降。此外，β沸石对 NNK 的吸附容量超过 70mg/g，为保护环境提供了一种强有力的 TSNA 吸附剂。
