天然气化工Issue(1)：24-29,70,7.
氨基改性MIL-101(Cr)用于CH4/CO2吸附分离的研究
Amine-functionalized MIL-101(Cr) and their adsorption properties for CO2/CH4 separation
李超 1王亦修 1孟凡超 1吕书玲 1荆钰 1马正飞1
作者信息
- 1. 南京工业大学 材料化学工程国家重点实验室，江苏 南京 210009
- 折叠
摘要
Abstract
Amine-functionalized MIL-101 (Cr) adsorbents were prepared by impregnation method and their crystal structure and properties were characterized by XRD, N2 adsorption and desorption, FT-IR and TG. The adsorption capacities of CO2 and CH4 on amine-functionalized MIL-101 (Cr) adsorbents were measured under 298K and 101.3kPa. The results showed that the interaction strength of amine-functionalized MIL-101 (Cr) with carbon dioxide was greatly increased, which improved the adsorption capability of CO2 and separation performance for CO2/CH4, and for the amine-functionalized adsorbent MIL-101-PEI-70 with a mass ratio of PEI to MIL-101 (Cr), the adsorption capacity of carbon dioxide was improved by 76%, from 50.55cm3/g to 89.43cm3/g, while the adsorption capacity of methane decreased by 44%, from 10.62cm3/g to 5.91cm3/g. The ideal adsorbed solution theory (IAST) model was used to predict the adsorption separation of CO2 over CH4, and the resulted indicated the adsorption selectivity for CO2 increased from 11 of unmodified MIL-101(Cr) to 255 of MIL-101-PEI-70. The adsorbents could be regenerated under mild conditions of 80℃and vacuum.关键词
金属有机骨架(MOF)/氨基改性/吸附分离/甲烷/二氧化碳Key words
metal organic framework (MOF)/amine-functionalization/adsorption separation/methane/carbon dioxide分类
化学化工引用本文复制引用
李超,王亦修,孟凡超,吕书玲,荆钰,马正飞..氨基改性MIL-101(Cr)用于CH4/CO2吸附分离的研究[J].天然气化工,2015,(1):24-29,70,7.
