摘要
希夫碱共价有机聚合物材料(COFs)因具有高的比表面积、较规整的孔道结构、低骨架密度、可调节的孔隙结构和易于功能化等优点,被广泛应用于气体储存、多相催化、光电器件等领域。本实验以1,3,5-三-(4-氨基苯)-三嗪为前体,和均苯三甲醛反应,设计并制备了希夫碱骨架新型多孔有机材料。采用元素分析、X射线粉末衍射仪、物理吸附仪、红外光谱仪、X射线光电子能谱以及分析扫描电镜等手段,对制备的材料进行表征分析,并研究材料对二氧化碳的吸附性能、吸附热和吸附选择性。结果表明,实验所制得的材料以微孔为主,273K下,其对二氧化碳的吸附量为57cm3·g^-1,吸附选择性可达9.5,吸附热为30kJ·mol^-1。
Schiff base covalent organic polymer(COFs)was widely used in gas storage,multiphase catalysis,photoelectric devices and other fields due to its high specific surface area,relatively regular pore structure,low skeleton density,adjustable pore structure and easy functionalization.Therefore,the new schiff base porous organic material was synthesized based on condensation reaction applied 1,3,5-(4-aminobenzene)-triazine and 1,3,5-benzene-tricarboxaldehyde as precursor.The preparation materials was characterized by elemental analysis,X-ray photoelectron spectroscopy,and scanning electron microscopy(SEM),the carbon adsorption,adsorption heat and adsorption selectivity of materials was also studied.The results showed that the material prepared in the experiment was mainly microporous,and its carbon dioxide adsorption capacity was 57cm3/g at 273K,the adsorption selectivity was up to 9.5,and the adsorption heat was 30kJ/mol.
作者
巩苗苗
刘栋
徐文轩
张宁
邵先钊
GONG Miaomiao;LIU Dong;XU Wenxuan;ZHANG Ning;SHAO Xianzhao(College of Chemistry and Environmental Science,Shaanxi University of Science and Technology,Shaanxi Key Laboratory of Catalysis Foundation and Application,Hanzhong 723000,China)
出处
《化工技术与开发》
CAS
2019年第11期1-6,共6页
Technology & Development of Chemical Industry
基金
国家自然科学基金(201503125)
陕西省大学生创新创业训练项目(201824033)
关键词
希夫碱共价有机聚合物
制备
表征
二氧化碳
吸附
schiff base covalent organic polymer
preparation
characterization
carbon dioxide
adsorption
