后修饰法制备官能化有机框架材料  

Synthesis of functionalized organic framework materials by post-modification

作　　者：李雄 刘勤[1] 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)

机构地区：[1]科顺防水科技股份有限公司研究开发部,广东佛山528300 [2]广东工业大学轻工化工学院,广东广州510006

出　　处：《石化技术与应用》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)。

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.

关 键 词：超高热稳定性 选择性 有机框架材料 后修饰 氨基 

分 类 号：TQ317.9[化学工程—高聚物工业]