超交联胺修饰树脂的制备及其对硝基芳烃的吸附性能。
Preparation of hypercrosslinked amine modification resin and its adsorption properties for nitroaromatics.
机构信息
Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
School of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
出版信息
Environ Sci Pollut Res Int. 2019 Apr;26(11):10767-10775. doi: 10.1007/s11356-019-04370-4. Epub 2019 Feb 18.
A nitrosation-reduction method had been applied for the modification of DCE-4 h. It was a kind of non-polar hypercrosslinked resin and synthesized by our group. The functional resin, NR-07, exhibited good adsorption performance for NACs (Nitroaromatics). The adsorption capacity of NR-07 for p-nitrobenzoic acid was almost 1.3 times as much as that of H-103 in 24 h. The adsorption rate of NR-07 calculated by the kinetic function was 1.6 times as much as that of DCE-4h. According to the EA analysis and IR spectrum, the amine and carbonyl group were introduced onto the polymer chains of NR-07. These hydrophilic chemical groups of NR-07 contributed to a higher liquid-film diffusion rate than that of DCE-4h. Besides, the pore volume within 0.46~4.3 nm increased after the modification process, which had a positive effect on the intra-particle diffusion process.
采用亚硝化-还原法对 DCE-4h 进行改性。DCE-4h 是一种非极性超交联树脂，由本课题组合成。功能树脂 NR-07 对 NACs（硝基芳烃）表现出良好的吸附性能。NR-07 对对硝基苯甲酸的吸附量在 24 h 内几乎是 H-103 的 1.3 倍。动力学函数计算的 NR-07 的吸附速率是 DCE-4h 的 1.6 倍。根据 EA 分析和红外光谱，NR-07 的聚合物链上引入了胺基和羰基。NR-07 的这些亲水化学基团有助于提高液膜扩散速率，高于 DCE-4h。此外，改性后 0.46~4.3nm 内的孔体积增加，这对颗粒内扩散过程有积极影响。
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