双功能金属有机骨架材料的制备及催化烯烃环氧化性能  

Preparation of Bifunctional Metal-organic Framework Materials and Application in Catalytic Olefins Epoxidation

作　　者：董妍红 鲁新环[1] 杨璐 孙凡棋 段金贵 郭昊天 张钦峻 周丹 夏清华[1] DONG Yanhong;LU Xinhuan;YANG Lu;SUN Fanqi;DUAN Jingui;GUO Haotian;ZHANG Qinjun;ZHOU Dan;XIA Qinghua(Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Ministry of Education,Hubei University,Wuhan 430062,China;State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 211816,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,武汉430062 [2]南京工业大学材料化学工程国家重点实验室,南京211816

出　　处：《高等学校化学学报》2022年第11期125-135,共11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);材料化学工程国家重点实验室开放项目(批准号:KL21-07)资助。

摘　　要：采用转动水热晶化的合成方式,以ZnO为锌源制备了锌钴金属有机骨架(ZnCo-MOF)双功能催化剂材料;利用X射线衍射(XRD),傅里叶变换红外光谱(FTIR),扫描电子显微镜(SEM)和X射线光电子能谱(XPS)等手段表征了催化剂的形貌、结构和组成.该催化剂材料在微波加热辅助催化α-蒎烯和α-甲基苯乙烯双烯烃的空气环氧化反应中,在不加任何引发剂或共还原剂条件下,能够高转化率、高选择性地得到环氧化物.使用转动水热晶化法(110 r/min转速)合成的ZnCo-MOF催化剂拥有最佳的催化活性,在对α-蒎烯和α-甲基苯乙烯进行催化环氧化反应时分别得到86.3%和99.8%(摩尔分数)的转化率,对应的环氧化物的选择性分别达到93.8%和94.3%.Metal organic framework materials(MOFs)are coordination polymers formed by coordination. Recent studies have found that MOFs are the kind of heterogeneous catalysts with excellent catalytic performance due to their stable active sites in many reactions. In this paper,the ZnCo-MOF bimetallic catalyst material were prepared by the synthetic method of rotational hydrothermal crystallization using ZnO as the zinc source. X-ray diffraction(XRD),Fourier transform infrared spectrum(FTIR),scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS)were used to represent the morphology,structure and composition of the catalyst. The prepared catalyst can obtain epoxide with high conversion and high selectivity without adding any initiator or co-reducing agent in the air epoxidation reaction of catalyzed diolefin by microwave heating. The ZnCo-MOF catalyst synthesized by rotational hydrothermal method(110 r/min)has the best activity in the catalytic epoxidation of α-pinene and α-methylstyrene,which can obtain 86.3% and 99.8%(molar fraction)conversion,respectively,and the selectivity of the corresponding epoxides reach 93.8% and 94.3%.

关 键 词：纳米氧化锌 双功能材料 微波 烯烃 空气环氧化 

分 类 号：O643.3[理学—物理化学]