物理化学学报Issue(6)：1169-1174,6.DOI:10.3866/PKU.WHXB201404223
源自密胺基多孔聚合物的富氮微孔炭及选择性吸附CO2
Nitrogen-Rich Microporous Carbon Derived from Melamine-Based Porous Polymer for Selective CO2 Adsorption
摘要
Abstract
Nitrogen-rich microporous carbon (NMC) was prepared by the carbonization of a melamine-based porous polymer (POP), which was synthesized via a Schiff base condensation using isophthalaldehyde and melamine as starting materials. N2 adsorption-desorption and Fourier transform infrared (FTIR) spectroscopy were used to characterize the structural properties of POP and the derived NMC. NMC contains less functional groups and has a higher specific surface area and microporous volume compared to POP. NMC has a N content of up to 12.5%(w), as determined by elemental analysis. Single-component adsorption equilibrium isotherms of CO2, CH4, and N2 on NMC were obtained using a volumetric method. NMC has a good CO2 capture property and its CO2 adsorption capacity was 2.34 mmol∙g-1 at 298K and 100kPa. Dual-site Langmuir (DSL) or single-site Langmuir (SSL) models appropriately describe the adsorption equilibrium behavior of CO2, CH4, and N2 on NMC. Based on the combined fitting parameters, binary adsorption isotherms were predicted by ideal adsorbed solution theory (IAST). Very high adsorption selectivities of CO2 over N2 and CH4 were obtained and the values were 144.9 and 12.8, respectively.关键词
微孔炭/CO2吸附/Langmuir模型/理想吸附溶液理论/选择性Key words
Microporous carbon/CO2 adsorption/Langmuir model/IAST/Selectivity分类
化学化工引用本文复制引用
胡敬秀,张静,邹建锋,肖强,钟依均,朱伟东..源自密胺基多孔聚合物的富氮微孔炭及选择性吸附CO2[J].物理化学学报,2014,(6):1169-1174,6.基金项目
The project was supported by the National Natural Science Foundation of China (21101139,21371152).国家自然科学基金(21101139,21371152)资助项目 （21101139,21371152）
