摘要
通过选用3,3′,5,5′,7,7′-六(4-溴苯基)-1,1′-联金刚烷和1,4-苯二硼酸先构筑了具有超高热稳定性的框架材料CF-2,再对CF-2进行先硝化后氨化的侧链接枝改性,制备了比表面积为605 m^(2)/g,孔径为0.61~0.78 nm的有机框架材料CF-NH_(2)。结果表明:在273 K,0.1 MPa的条件下,CF-NH_(2)的CO_(2)/N_(2)选择性可高达70.59,CO_(2),N_(2)的吸附量分别为95.97,4.91 cm^(3)/g,CO_(2)的吸附焓为34.82 kJ/mol;400℃下失重率仅约5%,热稳定性优异。
3,3′,5,5′,7,7′-hexakis(4-bromophenyl)-1,1′-biadamantane and 1,4-phenylenediboronic acid were used to synthesize the ultra-high thermally stable porous framework polymer(named as CF-2).By side chain nitrification and amination,an organic framework material CF-NH_(2)with specific surface area of 605 m^(2)/g and pore diameter of 0.61-0.78 nm was synthesized.The results showed that the CO_(2)/N_(2)selectivity of CF-NH_(2)was as high as 70.59;the adsorption capacity of CO_(2)and N_(2)were 95.97 and 4.91 cm^(3)/g,respectively;the adsorption enthalpy of CO_(2)was 34.82 kJ/mol at 273 K and 0.1 MPa.The weight loss rate was only about 5%at 400℃,which showed excellent thermal stability.
作者
李雄
刘勤
LI Xiong;LIU Qin(Department of Research and Development,Keshun Waterproof Technology Co Ltd,Foshan 528300,China;School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China)
出处
《石化技术与应用》
CAS
2023年第2期83-87,98,共6页
Petrochemical Technology & Application
基金
国家自然科学基金资助项目(项目编号:21476051)。
关键词
超高热稳定性
选择性
有机框架材料
后修饰
氨基
ultra-high thermal stability
selectivity
organic framework material
post-modification
amino group
