富氮超交联聚合物的制备及碘吸附性能研究
Preparation of nitrogen-rich hyper-cross-linked polymer and study of iodine adsorption properties
董栋 1张树军 2霍薇薇 1时志春 2王丹 2赵明 2李军 2赵英楠 2孙立秋2
作者信息
- 1. 齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔 161006
- 2. 齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔 161006;国家市场监管技术创新中心(工业大麻),黑龙江齐齐哈尔 161006
- 折叠
摘要
为了解决放射性碘(I2)带来的环境污染问题,通过Friedel-Crafts烷基化反应一步合成了一种富氮超交联聚合物(DPCI-HCP),并将其用于I2的气态和水相吸附.I2-水溶液中的吸附动力学实验结果表明,DPCI-HCP对I2的吸附行为符合准二级动力学模型.DPCI-HCP不但具有较好的水相I2清除能力(94.60％)和气态I2吸附能力(质量分数为643％),且在5次循环实验后,仍能保持初始气态I2吸附量的93.73％.通过红外光谱和X射线光电子能谱研究了吸附机理,证明吸附过程以化学吸附为主.
Abstract
To address the issue of environmental contamination by radioactive iodine(12),this study synthesized a nitrogen-rich hyper-cross-linked polymer(DPCI-HCP)using a one-step Friedel-Crafts alkylation reaction.The polymer was subsequently employed for I2 adsorption in gaseous and aqueous settings.The results of the adsorption kinetics experiment using an I2-water solution revealed that DPCI-HCP conformed to the quasi-secondary kinetic model while binding to I2.DPCI-HCP exhibits remarkable potential for practical applications,with an exceptional aqueous I2 removal rate of 94.60％,an outstanding gaseous I2 adsorption capacity of 643％by mass fraction,and a retention rate of 93.73％of the initial adsorption capacity after five test cycles.The adsorption mechanism was investigated using infrared spectroscopy and X-ray photoelectron spectroscopy,confirming that the adsorption process is primarily influenced by chemisorption.
关键词
超交联聚合物/吸附/放射性碘Key words
hyper-cross-linked polymer/adsorption/radioactive iodine引用本文复制引用
出版年
2024
NETL
NSTL
万方数据