ZnCo-POPs球形材料衍生双金属催化剂协同催化烯烃与空气的环氧化  

Synergistic Catalysis Epoxidation of Olefins and Air by Bimetallic Catalysts Derived from ZnCo-POPs Spherical Materials

作　　者：李婷[1] 鲁新环[1] 李茜茜 程柔 郭昊天 占俊辉 周丹[1] 夏清华[1] LI Ting;LU Xinhuan;LI Xixi;CHENG Rou;GUO Haotian;ZHAN Junhui;ZHOU Dan;XIA Qinghua(Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Ministry of Education,Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals,Hubei University,Wuhan 430062,China)

机构地区：[1]湖北大学有机功能分子合成与应用教育部重点实验室,小分子原料药精准制造湖北省重点实验室,武汉430062

出　　处：《高等学校化学学报》2024年第12期104-113,共10页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:22072038,22272045);有机功能分子合成与应用教育部重点实验室开放项目(批准号:KLSAOFM2109);药物合成与优化湖北省重点实验室开放项目(批准号:ZD202302).

摘　　要：多孔有机聚合物(POPs)作为一种新型的多孔材料,因其独特的优点被广泛应用于多相催化中.本文采用浸渍法制备了一系列不同组成的ZnCo-POPs双金属催化材料,利用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、X射线光电子能谱(XPS)和比表面及孔径分析(BET)等手段表征了材料.使用浸渍法制备的Zn_(0.3)Co_(0.6)-POPs-250-2催化剂显示了最佳的催化活性,在以N,N-二甲基甲酰胺作为反应溶剂,90℃条件下反应5 h可得到94.3%的α-蒎烯转化率及95.2%的环氧产物选择性,且该催化剂在循环使用5次后其催化活性未出现明显下降,说明Zn_(0.3)Co_(0.6)-POPs-250-2催化剂具有优异的催化性能及良好的稳定性.As a new type of porous material,porous organic polymers(POPs)is widely used in heterogeneous catalysis because of its unique advantages.In this paper,a series of ZnCo-POPs bimetallic catalytic materials with different compositions were prepared by impregnation method and characterized by means of X-ray diffraction(XRD),field emission scanning electron microscope(FESEM),X-ray photoelectron spectroscopy(XPS),specific surface area and pore size analysis(BET).The Zn_(0.3)Co_(0.6)-POP-250-2 catalyst prepared by impregnation method showed the best catalytic activity.When N,N⁃dimethyl formamide(DMF)was used as the reaction solvent and the reaction temperature was 90℃ for 5 h,94.3% α-pinene conversion and 95.2% epoxide selectivity were obtained,and the catalytic activity of the catalyst did not decrease obviously after being recycled for 5 times,which indicated that Zn_(0.3)Co_(0.6)-POP-250-2 catalyst has excellent catalytic performance and good stability.

关 键 词：多孔有机聚合物 Zn_(0.3)Co_(0.6)-POPs 烯烃 空气 环氧化 

分 类 号：O643.3[理学—物理化学]