高等学校化学学报2023，Vol.44Issue(12)：26-33,8.DOI:10.7503/cjcu20230282
共价有机框架-杂多酸复合材料用于非均相催化烯烃环氧化
Application of Covalent Organic Framework-Polyoxometalates Composites in Heterogeneous Catalytic Epoxidation of Olefins
摘要
Abstract
Covalent organic frameworks are crystalline porous materials with great application potential in heteroge-neous catalysis.We synthesized a new functional covalent organic framework,COF-FL-2,using derivatives of electron-deficient naphthalene diimide(NDI)as monomers.COF-FL-2 has a large pore size and good adsorption performance.The NDI structure on the skeleton can form a stable functional composite with polyoxometalates through π-anion interaction.A novel hybrid heteropolyacid complex,PTA@COF-FL-2,was prepared by loading phosphotungstic acid(PTA)on COF-FL-2.Remarkably,PTA@COF-FL-2 shows high catalytic activity for the epoxidation of olefins with t-BuOOH as the oxidant,and can epoxidate cyclooctene and 1-octene into the corresponding epoxides under mild conditions.PTA@COF-FL-2 can be used for a long time under reaction conditions,and there is no PTA leaching phenomenon when used.In addition,PTA@COF-FL-2 is very convenient to recycle and can be recycled many times.关键词
共价有机框架/杂多酸/非均相催化/负载材料/烯烃环氧化Key words
Covalent organic framework/Polyoxometalate/Heterogeneous catalysis/Loading material/Epoxidation of alkene分类
化学化工引用本文复制引用
孔祥宇,廖力,卢灿忠,方千荣..共价有机框架-杂多酸复合材料用于非均相催化烯烃环氧化[J].高等学校化学学报,2023,44(12):26-33,8.基金项目
国家重点研发计划项目(批准号:2022YFB3704900,2021YFF0500500)和国家自然科学基金(批准号:52073286,22275185,22025504,21621001,22105082)资助.Supported by the National Key Research and Development Program of China(Nos.2022YFB3704900,2021YFF0500500)and the National Natural Science Foundation of China(Nos.52073286,22275185,22025504,21621001,22105082). （批准号:2022YFB3704900,2021YFF0500500）
